Propane storage and handling code

Transcription

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B149.2-10
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CSA Standards Update Service
B149.2-10
January 2010
Title: Propane storage and handling code
Pagination: 139 pages (xiv preliminary and 125 text), each dated January 2010
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CSA Standard
B149.2-10
Published in January 2010 by Canadian Standards Association
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ISBN 978-1-55491-241-4
Technical Editor: Tony Cautillo
© Canadian Standards Association — 2010
All rights reserved. No part of this publication may be reproduced in any form whatsoever
without the prior permission of the publisher.
© Canadian Standards Association
Contents
CSA B149 Installation Code Committee vii
Interprovincial Gas Advisory Council xi
Preface xi
1 Scope 1
2 Reference publications 2
3 Definitions 4
4 General 10
4.1
Application 10
4.2
Approval of appliances, accessories, components, equipment, and material 11
4.3
Responsibilities of the installer 11
4.4
Training and quality of labour 11
4.5
Suitability of use 12
4.6
Electrical connections and components 12
4.7
Hazardous locations 12
4.8
Smoking 12
4.9
Isolation of safety devices 13
4.10
Leak detection 13
4.11
Appliance clearances to combustible material 13
4.12
Accessibility 13
4.13
Appliance ductwork connections 13
4.14
Combined heating systems 13
4.15
Appliances protected by automatic fire-extinguishing systems 14
4.16
Control of appliances with self-energized pilots 14
4.17
Defective heat exchangers 14
4.18
High-altitude installations 14
4.19
Protection of appliances from physical damage 15
5 General requirements for propane and propane equipment 15
5.1
Odorization 15
5.2
Container filling 15
5.3
Protection of containers and equipment 16
5.4
Pressure regulators 17
5.5
Line relief valves 17
5.6
Hydrostatic relief valves 17
5.7
Vent lines and discharge lines from regulators and line relief valves 17
5.8
Termination of vent and discharge lines from regulators, line relief valves, and hydrostatic relief
valves 18
5.9
Piping, tubing, hose, and fittings 18
6 Cylinder systems 18
6.1
Requirements for cylinders 18
6.2
Liquid level gauges on cylinders 20
6.3
Automatic regulating equipment 20
6.4
Purging and filling of cylinders 21
January 2010
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B149.2-10
Storage and use of cylinders at locations other than filling plants 22
General 22
Cylinders stored outdoors for commercial or industrial use or sale 23
Cylinders at construction sites 25
Cylinders supplying propane for welding, cutting, and preheating processes 26
Cylinders at commercial and industrial sites to supply propane for industrial trucks and ice
maintenance equipment 26
6.5.6 Storage of non-refillable cylinders in retail outlets and their warehouses (mercantile
occupancies) 27
6.5.7 Cylinders at sites where propane is supplied for cleaning and polishing equipment 29
6.5.8 Storage of cylinders located in special rooms or buildings 30
6.5.9 Cylinders supplying propane to portable food-serving carts located indoors 30
6.5.10 Construction of special cylinder storage rooms or buildings 30
6.6
Transportation of cylinders 31
6.7
Installation of cylinders 32
6.8
Rooftop installation of cylinder systems 33
6.9
Diking and grading 33
6.5
6.5.1
6.5.2
6.5.3
6.5.4
6.5.5
7 Tank systems, filling plants, and refill centres 33
7.1
General 33
7.2
Relief valves 35
7.3
Emergency shut-off valves 35
7.4
Excess-flow and back check valves 36
7.5
Pressure gauges on tanks 37
7.6
Liquid-level gauges on tanks 37
7.7
Filling of tanks 38
7.8
Installation of underground tanks 40
7.9
Discharge from tank relief valves 42
7.10
Location of consumer tanks 42
7.11
Tank supports 43
7.12
Filling plants and refill centres 44
7.13
Electrical equipment at filling plants 46
7.14
Storage of containers at filling plants 46
7.15
Fencing of filling plants 46
7.16
Location of tanks at filling plants and container refill centres 46
7.17
Container filling locations with provisions for container storage 46
7.18
Filling plants served by rail 48
7.19
Container refill centres 48
7.19.1 General 48
7.19.2 Fencing of container refill centres 49
7.19.3 Ventilated cabinets or enclosures 49
7.19.4 Protection against vehicular traffic 49
7.19.5 Electrical equipment 50
7.20
Dispensing devices 50
Movement of tanks not designed for transportation or delivery of propane 55
7.21
8 Tank trucks, tank trailers, and cargo liners 55
8.1
General 55
8.2
Tank equipment on tank trucks, tank trailers, and cargo liners 55
8.3
Pumps and compressors on tank trucks and cargo liners 56
8.4
Piping, tubing, hose, and fittings on tank trucks, tank trailers, and cargo liners 56
8.5
Electrical equipment and lighting on tank trucks, tank trailers, and cargo liners 56
8.6
Braking systems and chock blocks 56
8.7
Exhaust systems 57
iv
January 2010
8.8
8.9
8.10
8.11
8.12
8.13
8.14
8.15
8.16
8.17
8.18
Engine fuel 57
Fire extinguishers 57
Tank truck and cargo liner lettering 57
Towing tank trailers 57
Filling of tank trucks, tank trailers, and cargo liners 57
Operation of tank trucks, tank trailers, and cargo liners 58
Parking vehicles used to transport propane 58
Vehicles parked in public parking garages 59
Vehicles parked in private garages 59
Repair or servicing in private garages 59
Repair or servicing in repair garages 60
9 Vaporizers 60
9.1
General 60
9.2
Indirect vaporizers 61
9.3
Direct-fired vaporizers 62
10 Propane as an engine fuel 62
10.1
General 62
10.2
Engine fuel containers 63
10.3
Engine fuel piping, tubing, hose, and fittings 64
10.4
Engine fuel container equipment 65
10.5
Hydrostatic relief valves 65
10.6
Engine fuel vaporizers (converters) 65
10.7
Engine fuel regulators and valves 66
10.8
Servicing and parking indoors 66
10.9
Exchange of engine fuel containers 67
11 Installation of appliances, equipment, and containers on highway vehicles, recreational
vehicles, mobile housing, outdoor food service units, and wash-mobiles 67
11.1
General 67
11.2
Installation of containers 68
11.3
Installation of cylinders 68
11.4
Equipment on cylinders connected for use 69
11.5
Installation of tanks 69
11.6
Piping, tubing, hose, and fittings 72
11.7
Appliances 73
11.8
Marking 74
11.9
Parking 75
Annexes
A (informative)
B (informative)
C (informative)
D (informative)
E (informative)
F (informative)
G (informative)
H (informative)
I (informative)
J (informative)
K (informative)
L (informative)
—
—
—
—
—
—
—
—
—
—
—
—
Purging procedures for propane containers 76
Guide for tank installations 81
Concrete trough 83
Cylinder inspection report 84
Barrier protection 85
Piping expansion and flexibility 86
Reference diagram for electrical classification 88
Sizing of dip tube length 89
Bar hole diagram 90
General information 91
Two-stage regulation 107
Hose connector lengths 109
Index 110
January 2010
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B149.2-10
Tables
6.1 — Maximum permitted filling density of a cylinder by weight 21
6.2 — Maximum permitted filling density of a cylinder by liquid volume 21
6.3 — Cylinder storage clearances 23
6.4 — Storage of non-refillable cylinders in mercantile occupancies 28
6.5 — Storage of non-refillable cylinders in the backstock (warehouse) area of mercantile
occupancies 29
7.1 — Maximum permitted filling density of a tank by liquid volume (rotary or slip-tube gauge) 39
7.2 — Maximum permitted filling density of a tank by liquid volume (fixed-liquid-level gauge) 39
7.3 — Underground tanks 41
7.4 — Location of above-ground tanks for consumer applications limited to vapour withdrawal and/or
liquid withdrawal to a vaporizer 44
7.5 — Location of tanks at filling plants and container refill centres 47
7.6 — Electrical classification 51
10.1 — Mechanical ventilation rate in buildings 63
vi
January 2010
CSA B149 Installation Code
Committee
B. Diggens
MJS Mechanical Ltd.,
Calgary, Alberta
Chair
J.M. Jones
J.M. Jones Consulting Services,
Leamington, Ontario
Vice-Chair
D.J. Stainrod
D.J. Stainrod & Associates Ltd. (PGAC),
Bowmanville, Ontario
Vice-Chair
J. Angus
J.M.A. Associates,
Midland, Ontario
B. Bachellier
Government of Nunavut,
Cambridge Bay, Nunavut
P. Baker
Maxitrol Company,
Hamilton, Ontario
D. Baxter
Enbridge Gas Distribution,
Toronto, Ontario
M. Binet
Gaz Métro Inc.,
Montréal, Québec
K. Carlisle
Karl Dungs, Inc.,
Blaine, Minnesota, USA
P. Cavens
Cavens & Associates,
Roberts Creek, British Columbia
R. Charbonneau
Budget Propane Inc.,
Valleyfield, Québec
S. Cooke
Technical Standards & Safety Authority,
Toronto, Ontario
C. Côté
Gaz Métro Inc.,
Montréal, Québec
M. Davidson
New Brunswick Department of Public Safety,
Fredericton, New Brunswick
W. Drover
Government of Newfoundland and Labrador,
St. John’s, Newfoundland and Labrador
A. Durnie
Alberta Municipal Affairs,
Edmonton, Alberta
D. Eastman
January 2010
Associate
Alternate
Alternate
vii
B149.2-10
G. Edgar
Selkirk Inc.,
Logan, Ohio, USA
D. Evans
Bruce Sutherland Associates Ltd.,
Dartmouth, Nova Scotia
Z. Fraczkowski
Toronto, Ontario
J. Good
Autogas Propane Ltd.,
Burnaby, British Columbia
A. Gould
Reliance Comfort Ltd. Partnership,
dba Reliance Home Comfort,
Cambridge, Ontario
D. Green
National Research Council Canada,
Ottawa, Ontario
E. Hurd
British Columbia Safety Authority,
New Westminster, British Columbia
J. Jachniak
ENEFEN Energy Efficiency Engineering Ltd.,
Leduc, Alberta
S. Katz
S. Katz and Associates Inc.,
North Vancouver, British Columbia
W.C. LaRose
St. Albert, Alberta
W. Lock
S. McCarthy
CSA International,
Cleveland, Ohio, USA
J. McCormack
Superior Propane Inc.,
Moncton, New Brunswick
R. McRae
Government of the Northwest Territories
Public Works and Services,
Yellowknife, Northwest Territories
J. Melling
SaskPower,
Saskatoon, Saskatchewan
H. Nachaj
Le Groupe Charbonneau Inc.,
Montréal, Québec
V. Pao
Manitoba Department of Labour and Immigration,
Winnipeg, Manitoba
R. Pattison
ATCO Gas,
Edmonton, Alberta
viii
Alternate
Associate
Alternate
Alternate
January 2010
G. Potter
Cambridge Engineering,
Chesterfield, Missouri, USA
G. Prociw
Union Gas Limited,
Chatham, Ontario
V. Quiring
Engineered Air, Division of Airtex Manufacturing
Partnership,
Calgary, Alberta
B. Reid
Prince Edward Island Department of
Community Services & Attorney General,
Charlottetown, Prince Edward Island
J. Renaud
Régie du bâtiment du Québec,
Montréal, Québec
D. Ricard
Association Québécoise du Gaz Naturel,
Montréal, Québec
T. Rieger
Winnipeg, Manitoba
J. Robertson
Underwriters’ Laboratories of Canada,
Victoria, British Columbia
C. Snow
Enbridge Gas New Brunswick,
D. Stewart
Nova Scotia Department of Environment and Labour,
Halifax, Nova Scotia
M. Stornel
Manitoba Hydro,
Winnipeg, Manitoba
S. Thenappan
Rheem Manufacturing Company,
Montgomery, Alabama, USA
I. Tilgner
Human Resources and Skills Development Canada,
Ottawa, Ontario
I. Turnbull
Terasen Gas Inc.,
Surrey, British Columbia
D. Weishuhn
Blue Flame Heating & Air Conditioning Limited,
Toronto, Ontario
G. Williams
SaskPower,
Regina, Saskatchewan
T. Windsor
Sparling’s Propane Co. Ltd.,
Flesherton, Ontario
C. Wolfe
Government of Nunavut Community & Government
Services,
Iqaluit, Nunavut
January 2010
Associate
Alternate
ix
B149.2-10
x
D. Young
Government of Yukon,
Whitehorse, Yukon
A. Cautillo
Canadian Standards Association,
Mississauga, Ontario
Project Manager
January 2010
Interprovincial Gas Advisory
Council (IGAC)
S. Cooke
Toronto, Ontario
Chair
J. Renaud
Régie du bâtiment du Québec,
Montréal, Québec
Vice-Chair
G. Williams
SaskPower,
Regina, Saskatchewan
Vice-Chair
B. Bachellier
Government of Nunavut,
Cambridge Bay, Nunavut
M. Davidson
New Brunswick Department of Public Safety,
W. Drover
A. Durnie
Alberta Municipal Affairs,
Edmonton, Alberta
D. Eastman
Z. Fraczkowski
Toronto, Ontario
Alternate
E. Hurd
Alternate
W. Lock
R. McRae
Government of the Northwest Territories
Public Works & Services,
Yellowknife, Northwest Territories
J. Melling
SaskPower,
Saskatoon, Saskatchewan
Alternate
V. Pao
Winnipeg, Manitoba
Alternate
B. Reid
Prince Edward Island Department of
Community Services and Attorney General,
Charlottetown, Prince Edward Island
T. Rieger
Winnipeg, Manitoba
January 2010
Alternate
xi
B149.2-10
D. Stewart
Nova Scotia Department of Environment and Labour,
Halifax, Nova Scotia
I. Tilgner
Human Resources and Skills Development Canada,
Ottawa, Ontario
C. Wolfe
Government of Nunavut Community & Government
Services,
Iqaluit, Nunavut
D. Young
Government of Yukon,
Whitehorse, Yukon
A. Cautillo
Canadian Standards Association,
Mississauga, Ontario
xii
Alternate
Project Manager
January 2010
Preface
This is the tenth edition of CSA B149.2, Propane storage and handling code. It supersedes the previous
editions, published in 2005 and 2000 by the Canadian Standards Association (CSA) as CAN/CSA-B149.2,
in 1995, 1991, 1986, 1980, 1978, and 1976 by the Canadian Gas Association (CGA), and in 1969 by the
Canadian Standards Association.
In 1958, the Canadian Standards Association published the first edition of CSA B149, Installation Code
for Gas Burning Appliances and Equipment. It was superseded by later editions in 1962, 1966, and 1971.
Following the publication of the 1966 edition, the decision was made to split the Code into two parts: the
first part, B149.1, dealing with the installation requirements for appliances and equipment burning natural
gas; the second part, B149.2, dealing with the installation of appliances and equipment burning propane.
As a first step, B149.2 was prepared and first published in 1969.
The Canadian Gas Association was accredited by the Standards Council of Canada as the standards
development organization responsible for preparing standards for gas-burning appliances and equipment,
and in this connection took over responsibility for the B149 Code in 1974. New editions of the Code were
subsequently published in 1976, 1978, 1980, 1986, 1991, and 1995.
On June 30, 1997, the Canadian Standards Association acquired International Approval Services (IAS),
which was until then a joint venture of the American Gas Association (AGA) and the Canadian Gas
Association. Under this agreement, CSA acquired the complete range of IAS standards administration,
certification, and registration products and services for appliances and accessories fuelled by natural and
liquefied petroleum gases. In 1998, the CSA B149 Installation Code Committee agreed to publish a
Natural Gas and Propane Installation Code that would amalgamate the first seven sections of
CAN/CGA-B149.1 and CAN/CGA-B149.2 to become CSA B149.1-00. This amalgamation was in response
to the trend among the authorities having jurisdiction of combining licensing and training for natural gas
and propane. The remaining sections 8 to 14 of CAN/CGA-B149.2 became CSA B149.2-00, Propane
Storage and Handling Code.
In this 2010 edition, where a major change or addition to the previous edition of the Code has been
made, the clause, table, or figure affected is identified by the symbol delta (Δ) in the margin. Users of the
Code are advised that the change markers in the text are not intended to be all-inclusive and are provided
as a convenience only; such markers cannot constitute a comprehensive guide to the revisions made to
the Code. Care must therefore be taken not to rely on the change markers to determine the current
requirements of the Code. As always, users of the Code must consider the entire Code and any local
amendments.
The CSA B149 Installation Code Committee, which is responsible for preparing this Code, consists of
members of the provincial gas inspection authorities, natural gas utilities, propane distributors, appliance,
equipment, and accessory manufacturers, certification organizations, and representatives from the
Heating, Refrigeration and Air Conditioning Institute of Canada, the Mechanical Contractors Association of
Canada, and federal government departments. This Code has been formally approved by the CSA B149
Installation Code Committee and by the Interprovincial Gas Advisory Council.
January 2010
Notes:
(1) Use of the singular does not exclude the plural (and vice versa) when the sense allows.
(2) Although the intended primary application of this Code is stated in its Scope, it is important to note that it remains the
responsibility of the users of the Code to judge its suitability for their particular purpose.
(3) This publication was developed by consensus, which is defined by CSA Policy governing standardization — Code of
good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority,
but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical
Committee list and yet not be in full agreement with all clauses of this publication.
(4) To submit a request for interpretation of CSA Standards, please send the following information to [email protected] and
include “Request for interpretation” in the subject line:
(a) define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;
January 2010
xiii
B149.2-10
(b) provide an explanation of circumstances surrounding the actual field condition; and
(c) where possible, phrase the request in such a way that a specific “yes” or “no” answer will address the issue.
Committee interpretations are processed in accordance with the CSA Directives and guidelines governing
standardization and are published in CSA’s periodical Info Update, which is available on the CSA website at
http://standardsactivities.csa.ca.
(5) CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate
committee. To submit a proposal for change to CSA Standards, please send the following information to
[email protected] and include “Proposal for change” in the subject line:
(a) Standard designation (number);
(b) relevant clause, table, and/or figure number;
(c) wording of the proposed change; and
(d) rationale for the change.
xiv
January 2010
B149.2-10
Δ
1 Scope
1.1
This Code applies to
(a) the storage, handling, and transfer of propane;
(b) the installation of appliances, equipment, components, accessories, and containers on highway
vehicles, recreational vehicles, mobile housing, outdoor food service units, and wash-mobiles
when propane is to be used for fuel purposes;
(c) propane used as an engine fuel in other than highway vehicles; and
(d) the installation of containers and equipment to be used for propane in distribution locations and
filling plants.
1.2
This Code does not apply to
(a) marine or pipeline terminals;
(b) gas where used as a feedstock in petroleum refineries or chemical plants;
(c) utility pipeline distribution and transmission pipelines;
(d) refrigerated storage or underground reservoirs for propane;
(e) propane used on boats;
(f) propane used as a propellant in aerosol containers;
(g) butane fuel cylinders of 5.3 oz (150 g) capacity or less; and
(h) the installation of appliances, equipment, components, accessories, and containers other than
those on highway vehicles, recreational vehicles, mobile housing, outdoor food service units, and
wash-mobiles when propane is to be used for fuel purposes.
1.3
Where the term “propane” is used, the requirements of this Code include, and apply equally to, any
material that is composed predominantly of any of the following hydrocarbons or mixtures of them:
propane, propylene, butanes (normal butane or isobutane), and butylenes.
1.4
The values given in yard/pound units are the standard. This Code contains SI (metric) equivalents to
yard/pound units so that the Code can be used in SI (metric) units. SI (metric) equivalents may be
approximate.
1.5
In this Code, unless approved otherwise by the authority having jurisdiction, “shall” indicates a
mandatory requirement; “should” indicates a recommendation or that which is advised but not
mandatory; and “may” indicates an advisory or optional statement. Notes to the text do not include
mandatory or alternative requirements. The purpose of a note is to separate from the text explanatory or
informative material that is not properly a part of this Code. Notes to figures and tables, however, are
considered part of the figure or table and may be written as mandatory requirements. Annexes are
designated normative (mandatory) or informative (non-mandatory) to define their application.
January 2010
1
B149.2-10
1.6
This Code and any standards referenced in it do not make or imply any assurance or guarantee with
respect to the life expectancy, durability, or operating performance of equipment and materials referenced
in the Code.
2 Reference publications
This Code refers to the following publications, and where such reference is made, it shall be to the edition
listed below, including all amendments published thereto.
CSA (Canadian Standards Association)
B51-09
Boiler, pressure vessel, and pressure piping code
B149.1-10
Natural gas and propane installation code
B149.3-10
Code for the field approval of fuel-related components on appliances and equipment
B149.5-10
Installation code for propane fuel systems and tanks on highway vehicles
B339-08
Cylinders, spheres, and tubes for the transportation of dangerous goods
B340-08
Selection and use of cylinders, spheres, tubes, and other containers for the transportation of dangerous goods,
class 2
B620-09
Highway tanks and TC portable tanks for the transportation of dangerous goods
B622-09
Selection and use of highway tanks, TC portable tanks, and ton containers for the transportation of dangerous
goods, Class 2
C22.1-09
Canadian Electrical Code, Part I
Z240 MH Series-09, Manufactured homes:
Z240.4.1-09
Installation requirements for gas-burning appliances in manufactured homes
Z240 RV Series-08, Recreational vehicles:
Z240.4.2-08
Installation requirements for propane appliances and equipment in recreational vehicles
ASTM (American Society for Testing and Materials)
B117-09
Standard Practice for Operating Salt Spray (Fog) Apparatus
2
January 2010
CGA (Compressed Gas Association)
C-6-2007
Standards for Visual Inspection of Steel Compressed Gas Cylinders
C-6.3-1999
Guidelines for Visual Inspection and Requalification of Low Pressure Aluminum Compressed Gas Cylinders
S-1.1-2007
Pressure Relief Device Standards — Part 1 — Cylinders for Compressed Gases
V-1-2005
Compressed Gas Cylinder Valve Outlet and Inlet Connections
CGSB (Canadian General Standards Board)
CAN/CGSB-1.184-98
Coal Tar Epoxy Coating
CAN/CGSB-3.13-1988 (withdrawn)
Liquefied Petroleum Gas (Butanes)
CAN/CGSB-3.14-2006
Liquefied Petroleum Gas (Propane) for Fuel Purposes
CAN/CGSB-43.123-M86
Containers, Metal, Aerosol (TC-2P, TC-2Q)
Government of Canada
Motor Vehicle Safety Regulations, C.R.C. 1978, c. 1038. Schedule IV, Part IV, Standard 301, as amended
Transportation of Dangerous Goods Act, S.C. 1992, c. 34, and the Transportation of Dangerous Goods
Regulations, as amended from time to time
NFPA (National Fire Protection Association)
NFPA 13-2010
Installation of Sprinkler Systems
NFPA 30B-2007
Code for the Manufacture and Storage of Aerosol Products
NRC (National Research Council Canada)
National Building Code of Canada, 2005
UL (Underwriters Laboratories Inc.)
UL 2227
Standard for Overfilling Prevention Devices
ULC (Underwriters’ Laboratories of Canada)
CAN4-S104-M80 (R1985)
Standard Method for Fire Tests of Door Assemblies
CAN/ULC-S114-05
Standard Method of Test for Determination of Non-Combustibility in Building Materials
CAN/ULC-S603.1-03
External Corrosion Protection Systems for Steel Underground Tanks for Flammable and Combustible Liquids
January 2010
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3 Definitions
Note: Throughout this Code, certain terms appear in bold italic type. These terms have been defined in this Clause to ensure
understanding of their intended meaning in this Code. Defined terms have been highlighted in bold italic type only in certain
key contexts. It is the responsibility of the user to ensure that the defined terms are understood in accordance with this
Clause, whether or not they appear in bold italic type.
The following definitions apply in this Code:
Accessory — a part capable of performing an independent function and contributing to the operation of
the appliance that it serves.
Air supply (with respect to the installation of an appliance) — combustion air, flue gas dilution air, and
ventilation air.
Combustion air — the air required for satisfactory combustion of propane, including excess air.
Flue gas dilution air — the ambient air that is admitted to a venting system at the draft hood,
draft diverter, or draft regulator.
Ventilation air — air that is admitted to a space containing an appliance to replace air exhausted
through a ventilation opening or by means of exfiltration.
Appliance — a device to convert propane into energy; the term includes any component, control,
wiring, piping, or tubing required to be part of the device.
Approved — acceptable to the authority having jurisdiction.
Authority having jurisdiction — the governmental body responsible for the enforcement of any part
of this Code, or the official or agency designated by that body to exercise such a function.
Boiler — an appliance intended to supply hot liquid or vapour for space-heating, processing, or power
purposes.
Branch line — the part of a piping or tubing system that conveys propane from the main piping or
tubing or header to an appliance(s).
Building — a structure or part of a structure used or intended for supporting or sheltering persons,
animals, or property and classified by its occupancy in accordance with the applicable building code of the
authority having jurisdiction or, in the absence of such, in accordance with the National Building Code
of Canada.
Assembly building — any building or part of a building used by a gathering of persons for civic,
political, travel, religious, social, educational, recreational, or like purpose, or for the consumption
of food or drink.
Care or detention occupancy building — any building or part of a building used or occupied by
persons who require special care or treatment because of cognitive or physical limitations, or by
persons who are incapable of self-preservation and who are restrained from self-destruction by
security measures not under their control.
Commercial building — any building used in connection with direct trade with, or service for,
the public.
Industrial building — any building used in connection with production or process work or with
storage or warehousing.
Residential building — any building or part of a building used by persons for whom sleeping
accommodation is provided but who are not harboured or detained to receive medical care or
treatment or are not involuntarily detained.
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January 2010
Building opening — a planned aperture that is intended to permit air infiltration but does not include
an exhaust vent or a non-openable window.
Burner — a device or group of devices that forms an integral unit for the introduction of propane, with or
without air or oxygen, into the combustion zone for ignition.
Cargo liner — a vehicle that is used to transport propane in which the tank constitutes the main structural
member and that is towed by a separate motor vehicle.
Certified (with respect to any appliance, accessory, component, equipment, or manufacturer’s
installation instructions) — investigated and identified by a designated testing organization as conforming
to recognized standards, requirements, or accepted test reports.
Combustible — material that fails to conform to CAN/ULC-S114 requirements for noncombustibility.
Combustible liquid — a liquid that has a flashpoint at or above 100°F (38 °C) and below 200°F (93 °C).
Combustion air — see Air supply.
Commercial- and industrial-type appliance or equipment — an appliance or equipment other than
a residential or recreational type.
Commercial building — see Building.
Component — an essential part of an appliance or equipment.
Connector — tubing or hose with a fitting at each end for connecting an appliance or equipment with
piping or tubing.
Hose connector — a flexible assembled conduit not exceeding 6 ft (2 m) in length.
Metal connector — a corrugated or semi-rigid conduit made entirely of metal.
Construction heater — a portable direct-fired unvented heater intended only for temporary use in
heating buildings under construction, alteration, or repair.
Container (with respect to NGV/propane storage) — either a cylinder or a tank.
Container refill centre (propane service station) — an area, including a building, in which
propane is dispensed into containers, and in which propane storage containers, piping, and pertinent
equipment, including dispensing devices, can be located.
Continuous pilot — see Pilot.
Cylinder — a container designed and manufactured in accordance with a cylinder specification
authorized for the containment and transportation of propane under the Transportation of Dangerous
Goods (TDG) Regulations of Transport Canada.
Cylinder system — an assembly that includes the cylinder base or bracket, cylinder, cylinder valve,
connector, manifold valve assembly, regulator, and relief valve, or any combination of these.
Direct-vent appliance — an appliance constructed so that all the combustion air is supplied directly
from, and the products of combustion are vented directly to, the outdoors by independent enclosed
passageways connected directly to the appliance.
Dwelling unit — a housekeeping unit used or intended to be used as a domicile by one or more persons,
and usually containing cooking, eating, living, sleeping, and sanitary facilities.
Enclosure — a secondary structure (room) within or attached to a structure (building) in which an
appliance is installed.
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Equipment — a device, other than an appliance, accessory, or component, that is connected to a piping
or tubing system.
Fast-closing valve — see Valve.
Filling density — the percentage ratio of the weight of the propane in a container to the weight of water
the container will hold at 59°F (15 °C).
Filling plant (bulk plant) — a facility, the primary purpose of which is the distribution of propane.
Such plants have bulk storage and usually have container filling and vehicle transfer facilities on the
premises. Bulk plants are considered part of this category.
Fitting — an item in a piping or tubing system that is used as a means of connection, such as an elbow,
return bend, tee, union, bushing, coupling, cross, or nipple; the term does not include such functioning
items as a valve or pressure regulator.
Flexible connector — see Connector.
Flexible metallic hose — an all-metallic flexible propane conduit.
Flue — an enclosed passageway for conveying flue gases.
Flue collar — that portion of an appliance designed for the attachment of a draft hood, vent connector,
or venting system.
Flue gas dilution air — see Air supply.
Flue gases — combustion products and excess air.
Furnace — an indirect-fired, flue-connected, space-heating appliance that uses warm air as the heating
medium and usually has provision for the attachment of ducts.
Garage —
Private garage — a building, designed for the parking, storage, or repair of vehicles used to
transport propane, that is approved by the authority having jurisdiction for its purpose and is located
on property owned or leased by the owner of the vehicles.
Repair garage — a building or part of a building where facilities are provided for the repair or
servicing of motor vehicles.
Storage garage — a building or part thereof used or intended for either the storage or parking of
motor vehicles and that contains no provision for either the repair or servicing of such vehicles.
Gauge (when referring to the liquid level in containers) —
Fixed-liquid-level gauge — a type of liquid-level gauge that uses a small bleed valve and is
designed to indicate when the liquid level in a container being filled reaches the point at which
the gauge or its connecting tube communicates with the interior of the container.
Float gauge — a variable-liquid-level gauge constructed with a float inside the container resting on
the liquid surface that transmits its position to a pointer and dial outside the container.
Magnetic gauge — see Float gauge.
Rotary gauge — a variable-liquid-level gauge in which the level of the liquid is indicated by a rotary
pointer.
Slip-tube gauge — a variable-liquid-level gauge in which the level of the liquid is indicated by the
venting through a bleed valve.
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January 2010
Variable-liquid-level gauge — a gauge, such as a float, rotary, or slip-tube type, that indicates the
liquid level in a container.
Hose — a flexible conduit.
Hose connector — see Connector.
Ignition — the establishment of a flame.
Industrial building — see Building.
Installer — any individual, firm, corporation, or company that either directly or through a representative is
engaged in the installation, replacement, repair, or servicing of propane piping, venting systems,
appliances, components, accessories, or equipment, and whose representative is either experienced or
trained, or both, in such work and has complied with the requirements of the authority having jurisdiction.
Kiosk — a structure that has an area of less than 100 ft2 (9 m2) located on a remote dispenser island that
provides shelter and contains the necessary equipment to permit a person to perform his or her duties.
A kiosk is not considered a building.
Mechanical air intake — a means to mechanically provide ventilation and/or combustion air
requirements to a building.
Metal connector — see Connector.
Mobile housing — a term that includes all of the following structures:
Mobile home — a dwelling that consists of a vehicular portable structure built on a chassis and
designed to be used with or without a permanent foundation and to be connected to indicated
utilities.
Mobile industrial or commercial structure — a structure that is not intended as a dwelling unit,
is towable on its own chassis, and is designed for use without a permanent foundation. Such a
structure is built specifically for commercial or industrial use, such as a construction office, bunkhouse,
wash house, kitchen and dining unit, library, television unit, industrial display unit, laboratory unit,
or medical clinic.
Multiple-section mobile home — a single structure composed of separate mobile units,
each towable on its own chassis; when the units are towed to the site, they are coupled together
mechanically and electrically to form the single structure. These structures are sometimes referred
to as double-wide mobile homes when only two units are joined together.
Swing-out and expandable room-section mobile home — a mobile home that can be
telescoped when towed and expanded later for additional capacity.
NGV — natural gas stored in a gaseous state to be used as engine fuel for a highway vehicle.
Noncombustible — material that conforms to CAN/ULC-S114 requirements for noncombustibility.
Overfill prevention device (OPD) — a safety device that is designed to provide an automatic means to
prevent the filling of a container in excess of the maximum permitted filling limit.
Pilot — a flame that is used to ignite a gas/air or propane/air mixture at the main burner(s).
Continuous pilot — a pilot that burns without turndown throughout the entire time the burner
is in service, whether the main burner is firing or not.
Point of transfer — the dispensing hose inlet connection.
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POL — a commonly employed fitting used for propane and meeting the requirements for Connection
No. 510 as specified in CGA V-1.
Purge — to replace the existing fluid (gaseous or liquid) in piping, tubing, equipment, a container, or an
appliance with a desired fluid.
Quick-disconnect device — a hand-operated device that is used for connecting and disconnecting
either an appliance or an appliance connector to a propane supply and that is equipped with an automatic
means to shut off the propane supply when the device is disconnected.
Readily accessible — capable of being reached quickly for operation, renewal, servicing, or inspection,
without requiring climbing over, or the removal of, an obstacle or the use of a portable ladder.
Recreational vehicle — a portable structure intended as temporary accommodation for travel, vacation,
or recreational use. Such structures include a chassis-mounted camper, motorized home, slide-in camper,
tent trailer, or travel trailer.
Chassis-mounted camper — an accommodation body that attaches onto a truck chassis and is
not intended for removal.
Motorized home — a vehicular portable structure of self-propelled design.
Slide-in camper — an accommodation body that fits into a standard vehicle and is designed to be
easily removable.
Tent trailer — a vehicular portable structure built on its own chassis and having a rigid or canvas
top and side walls that can be folded or otherwise condensed for transit.
Travel trailer — a vehicular portable structure intended to be towed by a motor vehicle and that
does not fold up or reduce in size for transit.
Refuelling station — a facility for the dispensing of NGV that includes all stationary equipment and
associated components downstream from the inlet of a compressor manual shut-off valve.
Regulator —
Pressure regulator — a device, either adjustable or nonadjustable, for controlling and maintaining,
within acceptable limits, a uniform outlet pressure.
Two-stage regulation — a pressure-reducing system that reduces container pressure to utilization
pressure by the use of two separate regulators in series or a combination two-stage regulator.
Relief device — a device designed to open to prevent a rise of propane pressure in excess of a specified
value due to an emergency or abnormal conditions.
Remote dispensing device — any dispensing equipment connected to the storage tank but located
outside the confines of the tank protection.
Safety limit control — a safety control intended to prevent an unsafe condition of temperature,
pressure, or liquid level.
Safety shut-off valve — see Valve.
Set pressure — the start-to-discharge pressure for which a relief valve is set and marked.
Structure — the entire building in which an appliance is installed.
Tank (with respect to NGV/propane storage) — the class of container for the storage of compressed
natural gas/propane, designed and fabricated in accordance with CSA B51.
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January 2010
Tank trailer — a unit on which a tank of not more than 2000 USWG (7500 L) capacity is permanently
mounted on a chassis and is towed by another vehicle.
Tank truck — a truck chassis and tank assembly as a complete unit for the bulk delivery of propane.
TC — Transport Canada.
Valve — a device by which the flow of a fluid can be started, stopped, or regulated by a movable part that
opens or obstructs passage.
Back check valve — a valve that is normally closed and allows flow in only one direction.
Cylinder valve — a valve fitted to a cylinder.
Emergency shut-off valve — a valve that is part of a system that is designed to limit and shut
down the flow of propane in the event that a vehicle moves away from a transfer point with the
transfer hose or swivel-type piping connected to it.
Excess-flow valve — a valve designed to close when the liquid or vapour passing through it
exceeds a prescribed flow rate as determined by a pressure drop across the valve.
Fast-closing valve — an automatic valve that has a closing time of less than 5 s upon being
de-energized.
Hydrostatic relief valve — a pressure relief valve installed in a liquid propane line.
Internal excess-flow valve — an excess-flow valve that remains functional within the tank when
any portion of the valve external to the tank’s perimeter is sheared off or otherwise damaged.
An internal excess-flow valve can be integral to another valve.
Note: The perimeter of the tank is taken to mean not only the surface of the tank’s shell and ends but also the outline
of any boss, spigot, or nozzle welded to the tank so as to project outwards from it. The outline of welded brackets,
mountings, guards, subcompartments, and the like are not considered part of the perimeter for the purpose of this
definition.
Internal relief valve — a pressure relief valve that is built into the body of the diaphragm assembly
of a pressure regulator.
Internal valve — a valve designed and installed so that its seat is within a tank and the arrangement
of the parts of the valve is such that damage to the parts outside the tank will not prevent effective
seating of the valve.
Line relief valve — a relief valve installed in the piping or tubing system downstream of a
final-stage pressure regulator that is not equipped with an internal relief valve.
Safety shut-off valve — a valve that automatically shuts off the supply of propane when
de-energized by a combustion safety control, safety limit control, or loss of actuating medium.
Stop-fill valve — a device in a container that is intended to automatically shut off the flow of liquid
into the container when a predetermined fixed level is achieved.
Vaporizer — an appliance for converting liquid propane to vapour by means other than atmospheric
heat transfer through the surface of the container.
Direct-fired vaporizer — a vaporizer in which heat furnished by a flame is directly applied to a
heat exchange surface in contact with the liquid propane to be vaporized.
Direct immersion electric vaporizer — a vaporizer in which an electric element is immersed
directly in the propane liquid to be vaporized.
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Indirect electric vaporizer — an immersion-type vaporizer in which an electric element heats an
interface solution into which the propane heat exchanger is immersed or heats an intermediate heat
sink.
Indirect vaporizer — a vaporizer in which heat furnished by steam, hot water, or another heating
medium is applied to a vaporizing chamber’s tubing, pipe coils, or other heat exchange surface
containing the liquid propane to be vaporized. The heating of the medium being used occurs at a
point remote from the vaporizer.
Waterbath vaporizer — a vaporizer in which a vaporizing chamber’s tubing, pipe coils, or other
heat exchange surface containing the liquid propane to be vaporized is immersed in a
temperature-controlled bath of water, water-glycol combination, or another noncombustible heat
transfer medium that is heated by an immersion heater not in contact with the propane heat
exchange surface.
Vent — that portion of a venting system designed to convey flue gases directly to the outdoors from
either a vent connector or an appliance when a vent connector is not used.
Ventilation (with respect to the space in which an appliance is installed) — the removal of inside air,
leaked or spilled products of combustion, or flue gases from the space in which an appliance is installed to
outside the space, and the replacement of same by air from outside the space.
Ventilation air — see Air supply.
Wash-mobile — a mobile outdoor unit that uses propane-heated water, or a solution, for the purpose of
cleaning.
Zero governor — a regulating device that is adjusted to deliver propane at atmospheric pressure within
its flow rating.
4 General
4.1 Application
4.1.1
For the purposes of this Code, the requirements contained in CAN/CGSB-3.14 for propane or
CAN/CGSB-3.13 for butane shall apply.
4.1.2
When a specification or document referenced in Clause 2 contains a requirement that conflicts with a
requirement in this Code, the requirement in this Code shall govern.
4.1.3
An appliance, an accessory, a component, equipment, or any other item shall be installed in accordance
with the manufacturer’s certified installation instructions and with this Code.
4.1.4
Where a conflict exists between the manufacturer’s certified installation instructions and this Code,
the requirements of this Code shall prevail unless otherwise approved.
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January 2010
4.2 Approval of appliances, accessories, components, equipment, and
material
4.2.1
An appliance, an accessory, a component, equipment, or material used in an installation shall be of a
type and rating approved for the specific purpose for which it is employed.
4.2.2
When deviation from or postponement of these requirements is necessary, permission in writing shall be
obtained from the authority having jurisdiction before the work proceeds, and this permission shall
apply only to the particular installation for which it is given.
4.2.3
The approval of the assembly or construction of an appliance is subject to the authority having
jurisdiction. (CSA B149.3 contains provisions for assembly and construction of appliances.)
4.3 Responsibilities of the installer
4.3.1
Before leaving installations, installers shall ensure that the appliance, accessory, component, or
equipment they installed complies with the Code requirements, and the person initially activating the
appliance shall ensure that the appliance is in safe working order.
4.3.2
Installers shall instruct the user in the safe and correct operation of all appliances or equipment that they
install.
4.3.3
The installer shall ensure that the manufacturer’s instructions supplied with the appliance are left with
the user.
4.3.4
Before installing any replacement part of an appliance, the installer shall ensure that the replacement
part provides operational characteristics at least equivalent to those of the original part.
4.3.5
It shall be the responsibility of the installer of a piping or tubing system to perform pressure tests in
accordance with Clause 6.22.2 of CSA B149.1 and to ensure that the piping or tubing system is gas-tight
at the completion of the tests.
4.3.6
It shall be the responsibility of the installer of an appliance to perform tests in accordance with
Clause 6.22.3 of CSA B149.1 and to ensure that the system is gas-tight at the completion of the tests.
4.4 Training and quality of labour
4.4.1
All work shall be done in a skillful, thorough manner. Careful attention shall be paid not only to the
mechanical execution of the work but also to the arrangement of the installation.
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4.4.2
Personnel performing installation, operation, and maintenance work shall be properly trained in such
functions.
4.5 Suitability of use
4.5.1
An appliance shall not be installed unless it is designed for use with the type of gas to which it is to be
connected and is suitable for the pressure supplied.
4.5.2
The use of an appliance, an accessory, a component, equipment, or material shall be prohibited where
a hazard is created.
4.5.3
An appliance that has been exposed to fire, explosion, flood, or other damage shall not be offered for
sale, installed, reactivated, or reconnected to the supply until the appliance has been inspected by a
person acceptable to the authority having jurisdiction.
4.5.4
Before reconnection to supply piping or tubing, a used appliance shall be inspected and determined by
the installer to be safe for continued use.
4.6 Electrical connections and components
4.6.1
Electrical connections between an appliance and building wiring shall comply with the local electrical
code or, in the absence of such, with the Canadian Electrical Code, Part I.
4.6.2
An electrical circuit employed for operating an automatic main control valve, automatic pilot,
room-temperature thermostat, safety limit control, or another electrical device used with an
appliance shall be in accordance with the appliance wiring diagram.
4.7 Hazardous locations
4.7.1
An appliance shall not be installed in a room that has an atmosphere containing vapours corrosive to an
appliance or venting system.
4.7.2
An appliance, unless certified for installation in a hazardous location, shall not be installed in any location
where a flammable vapour, combustible dust or fibres, or an explosive mixture is present.
4.8 Smoking
Smoking or providing any other source of ignition shall not be permitted in the area where work is being
done on piping, tubing, or equipment that either contains or has contained propane, unless the piping,
tubing, or equipment has been purged of all propane as outlined in Clause 6.23 of CSA B149.1.
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January 2010
4.9 Isolation of safety devices
Isolating or rendering inoperative a safety shut-off valve, safety limit control, or relief valve shall be
prohibited.
4.10 Leak detection
4.10.1
A match, candle, flame, or other source of ignition shall not be used to check for a propane leak.
4.10.2
A light, including a flashlight, used in connection with a search for propane leakage shall be of a Class I,
Group D type.
4.10.3
An electric switch either in or adjacent to an area of propane leakage shall not be operated unless it is of
a Class I, Group D type.
4.11 Appliance clearances to combustible material
Appliance clearances to combustible material shall be in accordance with Clause 4.13 of CSA B149.1.
4.12 Accessibility
4.12.1
An appliance shall be installed so that it is accessible for servicing.
4.12.2
An appliance shall be installed with a minimum service clearance of 24 in (600 mm) from any side, top,
or bottom where service could be necessary, except where
(a) a greater distance is indicated on the appliance rating plate; or
(b) the distance is not sufficient for the removal, replacement, or repair of a component, an accessory,
or any equipment forming either an integral part of the appliance or connected to the appliance,
in which case minimum service clearance shall be provided that is adequate to effect such removal,
replacement, or repair.
All measurements shall be taken between the outermost projection of the appliance and the
surrounding structure or property line after the appliance has been installed.
4.12.3
An access opening with minimum dimensions of 24 × 30 in (600 × 750 mm) shall be provided to the
space in which an appliance is located.
4.12.4
A clear and unobstructed passageway at least 36 in (900 mm) high and 36 in (900 mm) wide shall be
provided to each appliance.
4.13 Appliance ductwork connections
Ductwork shall not be connected to an appliance unless the appliance is approved for use with
ductwork.
4.14 Combined heating systems
Combined heating systems shall be in accordance with Clause 4.18 of CSA B149.1.
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4.15 Appliances protected by automatic fire-extinguishing systems
4.15.1
When an exhaust system protected by an automatic fire-extinguishing system is installed over an
appliance not provided with a flame safeguard, the operation of the fire-extinguishing system shall be
interlocked with the propane supply to the appliance so as to automatically shut off the propane,
including the pilot, to the appliance protected by the extinguishing system and also to any other
appliance that can be affected by the extinguishing system.
4.15.2
The valve used to shut off the propane supply referred to in Clause 4.15.1 shall be located outside the
protected area, identified as to its function, and have permanent legible relighting instructions posted
adjacent to it. The valve shall be
(a) an approved mechanical non-electric fast-closing valve of the manual-reset type; or
(b) an automatic electrically operated fast-closing valve
(i) of the manual-reset type; or
(ii) provided with a remote manual-reset function to open.
4.15.3
A manual shut-off valve shall be installed immediately upstream of the valve referred to in Clause 4.15.2.
4.16 Control of appliances with self-energized pilots
When two or more appliances with self-energizing pilots are installed, each shall be independently
controlled by a separate actuating device such as a thermostat.
4.17 Defective heat exchangers
4.17.1
Where the heat exchanger of a furnace installed in a dwelling unit is found to be defective, it shall be
replaced.
4.17.2
The heat exchanger referred to in Clause 4.17.1 may be temporarily repaired, if necessary, and the repair
shall be in compliance with the procedures acceptable to the authority having jurisdiction.
4.17.3
Where the heat exchanger of a commercial or industrial appliance is found to be defective, it may be
repaired, and the repair shall be in compliance with procedures acceptable to the authority having
jurisdiction.
4.18 High-altitude installations
4.18.1
New appliances with inputs up to and including 400 000 Btuh (120 kW) and certified for high-altitude
operation shall be adjusted to the high-altitude rating shown on the nameplate when installed at
elevations between 2000 ft and 4500 ft (600 m and 1350 m) above sea level.
4.18.2
When an appliance is installed at elevations above 4500 ft (1350 m), the certified high-altitude input
rating shall be reduced at the rate of 4% for each additional 1000 ft (300 m).
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January 2010
4.19 Protection of appliances from physical damage
Where an appliance is installed in an area where physical damage can be incurred, the appliance shall be
protected from such damage.
5 General requirements for propane and propane equipment
5.1 Odorization
5.1.1
Propane distributed for fuel purposes shall be odorized in accordance with CAN/CGSB-3.14.
5.1.2
Odorization of the propane shall be the responsibility of the producer or processor, who shall indicate on
the shipping document its compliance with CAN/CGSB-3.14 as referenced in Clause 5.1.1.
5.2 Container filling
5.2.1
Propane shall only be transferred from one container to another by a person who is the holder of a
certificate recognized by the authority having jurisdiction.
5.2.2
While propane is being transferred from one container to another, the person transferring shall remain
at the container being filled.
5.2.3
Propane shall not be put into
(a) a cylinder specifically designed for butane or one having a design pressure of less than 240 psig
(1650 kPa) except as permitted by the TDG Regulations of Transport Canada; or
(b) a tank specifically designed for butane or one having a design pressure of less than 250 psig
(1750 kPa).
5.2.4
The owner and/or licence holder of a container refill centre, card/key lock, or fleet vehicle refuelling
outlet shall be held responsible for ensuring compliance with the requirement of Clause 5.2.1.
5.2.5
A container having brass equipment designed for propane use shall not be used for anhydrous ammonia.
Except as permitted by the TDG Regulations of Transport Canada, when steel equipment is installed on
the container and the container has been used with anhydrous ammonia, it may be used for propane if
purged in accordance with Clause A.1 of Annex A.
5.2.6
The person filling any container shall be responsible for ensuring that the maximum permitted filling
density is not exceeded.
5.2.7
A container shall not be filled or gauged
(a) inside a building, other than a building designed for such purpose;
(b) in a location that is not well ventilated;
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(c) within 10 ft (3 m) measured horizontally from the air intake of any appliance or air-moving
equipment; or
(d) within 10 ft (3 m) measured horizontally from any source of ignition.
5.2.8
A new container, or one from which the propane atmosphere has been removed, shall be purged.
5.2.9
When a container is repaired, requalified, or scrapped, its liquid contents shall only be removed by flaring
or by transferring to another container.
5.2.10
Cylinders and motor fuel containers shall be purged in accordance with Clauses 6.4.1 and 10.2.1 and
with CSA B149.5.
5.2.11
A propane-fuelled highway vehicle shall not be refuelled unless
(a) it is a vehicle identified as meeting the Motor Vehicle Safety Regulations, Standard 301, for
factory-equipped vehicles; or
(b) it meets the requirements of Clause 5.13.1 of CSA B149.5.
5.2.12
Cylinders and motor fuel containers shall not be purged within 10 ft (3 m), measured horizontally, of
(a) a building, except for a building approved for the purposes;
(b) a property line;
(c) a source of ignition; or
(d) the air intake of any appliance or air-moving equipment.
5.3 Protection of containers and equipment
5.3.1
Valves, regulators, gauges, piping, tubing, hose, and other equipment shall be protected against
damage.
5.3.2
When containers are installed or stored in locations that do not afford protection from damage from
motor vehicles on any street, highway, avenue, alley, or parking lot, they shall be protected by posts or
guardrails in compliance with Clause 7.19.4 unless otherwise approved by the authority having
jurisdiction.
5.3.3
Readily ignitable materials, including weeds and long dry grass, shall be removed from the area within
10 ft (3 m) of a container, and this area shall be kept clear of such material at all times.
5.3.4
When a distributor-owned container is disconnected by the distributor and left on a customer’s property,
all container service valve outlets shall be plugged.
16
January 2010
5.4 Pressure regulators
5.4.1
Every regulator shall be of sufficient size to provide the required flow of propane at the extremes of inlet
pressures to which the regulator can be exposed.
5.4.2
A regulator shall be firmly secured to the container valve or a regulator bracket on the wall or hood, or
be otherwise secured. When installed outdoors and subject to inclement weather, the regulator shall be
protected from exposure to weather conditions.
5.4.3
A regulator installed outdoors or in an unheated area shall be positioned so that the bonnet vent opening
discharges vertically downward, except that
(a) when installed within a container dome, the vent opening shall be positioned downward not less
than 15° from the horizontal; and
(b) a single-stage regulator of a capacity not exceeding 150 000 Btuh (120 kW) may be installed in a
horizontal position, provided that it is protected from inclement weather.
5.5 Line relief valves
When a final-stage regulator is not equipped with an internal relief valve, it shall have immediately
downstream a line relief valve with a discharge setting of not less than
(a) 2 times and not more than 3 times the delivery pressure on systems operating up to 5 psig (35 kPa);
or
(b) 1.5 times and not more than 2 times the delivery pressure on systems operating at more than
5 psig (35 kPa).
The relieving pressure setting of the line relief valve shall be not higher than that of the lowest-rated
component or accessory located downstream.
5.6 Hydrostatic relief valves
5.6.1
A hydrostatic relief valve shall be installed in a liquid propane system wherever liquid propane can be
contained or trapped due to valve closure. Such a hydrostatic relief valve shall terminate in compliance
with Clause 5.8.1 and have a start-to-discharge pressure setting of neither less than 375 psig (2500 kPa)
nor more than 500 psig (3500 kPa).
5.6.2
Discharge lines from two or more hydrostatic relief valves may run into a common discharge header
provided that the cross-sectional area of the header is at least equal to the sum of the cross-sectional areas
of the individual discharge lines and the header is not connected to any vent or bleed line.
5.7 Vent lines and discharge lines from regulators and line relief valves
5.7.1
The discharge from any regulator that is equipped with an internal relief valve and is installed indoors
shall be vented to the outdoors.
5.7.2
When a line relief valve is installed indoors, it shall be vented to the outdoors in accordance with
Clauses 5.8.1 and 5.8.2.
January 2010
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B149.2-10
5.7.3
A line relief valve assembly, including its connections, shall be of sufficient size to provide the rate of flow
required for the system to which it is connected.
5.7.4
Discharge lines from two or more line relief valves or final-stage regulators may run into a common
discharge header, provided that the cross-sectional area of such a header is at least equal to the sum of the
cross-sectional areas of the individual discharge lines.
5.8 Termination of vent and discharge lines from regulators, line relief
valves, and hydrostatic relief valves
5.8.1
The discharge from a regulator vent, line relief valve, or hydrostatic relief valve shall terminate
outdoors and be located
(a) not less than 3 ft (1 m) horizontally from any building opening that is below the level of such
discharge and not beneath any building; and
(b) not less than 10 ft (3 m) in any direction from air openings into a direct-vent appliance, a
mechanical air intake, or a source of ignition.
5.8.2
A regulator vent, line relief valve, or hydrostatic relief valve discharging vertically upwards shall be
provided with a loose-fitting rain cap. When discharging downwards, it shall be provided with a protective
screen.
5.8.3
The discharge from a hydrostatic relief valve shall be directed away from any propane container.
5.9 Piping, tubing, hose, and fittings
Except as provided in Clause 10.3, piping, tubing, hose, and fittings shall comply with the requirements
of Clause 6 of CSA B149.1.
6 Cylinder systems
6.1 Requirements for cylinders
6.1.1
Refillable cylinders shall be manufactured, tested, inspected, and marked in accordance with the
requirements of CSA B339 and the Transportation of Dangerous Goods Regulations of Transport Canada.
6.1.2
Except for
(a) cylinders used in industrial truck service; and
(b) cylinders identified and used for industrial welding and cutting gases,
refillable vapour service cylinders manufactured after January 1, 2008 with a capacity of 40 lb (18.2 kg) or
less shall be equipped with an overfill prevention device (OPD) in compliance with UL 2227.
18
January 2010
6.1.3
TC Specification 39 non-refillable cylinders shall be manufactured, tested, inspected, and marked in
accordance with the requirements of CSA B339 and the Transportation of Dangerous Goods Regulations
of Transport Canada.
6.1.4
TC Specification 2P and 2Q non-refillable cylinders shall be manufactured, tested, inspected, and marked
in accordance with the requirements of CAN/CGSB-43.123 and the Transportation of Dangerous Goods
Regulations of Transport Canada.
6.1.5
Requalification and re-marking of refillable cylinders shall be done by qualified persons at locations
registered with Transport Canada. When the method of requalification chosen by the owner of the
cylinder is the visual inspection and requalification method, it shall be done at ten-year intervals, starting
with the date of manufacture, and shall be in accordance with the procedure described in CGA C-6 for
steel cylinders, or the procedure described in CGA C-6.3 for aluminum cylinders. Re-marking
requirements stamped on the cylinder shall meet the requirements of Clause 24.6 of CSA B339 and the
Transportation of Dangerous Goods Regulations of Transport Canada. The following special provisions for
requalification shall apply:
(a) The results of the inspection shall be recorded on a data sheet, as illustrated in Table D.1 of Annex D.
(b) Records showing the results of the inspection and requalification shall be kept by the facility carrying
out the inspection until
(i) the date of expiration of the requalification period; or
(ii) the date the cylinder is reinspected.
(c) Except for a cylinder in excess of 240 lb (110 kg) water capacity with a protective dome cover, every
cylinder shall have the relief valve removed and replaced with either a new relief valve or one that
has been tested to and complies with CGA S-1.1, and found acceptable for use. A replacement valve
shall have the relief valve and dip tube length sized for the cylinder. (See Annex H for sizing of dip
tube length.)
6.1.6
A steel cylinder shall be kept painted with light colours that are reflective.
6.1.7
Each cylinder shall be provided with a relief valve that meets the requirements of CSA B340.
6.1.8
The relief valve shall have direct communication at all times with the vapour space of the cylinder.
6.1.9
A refillable cylinder with a capacity of 45 lb (20 kg) or less not equipped with a CGA No. 791 cylinder
connection device shall be equipped with an effective gas-tight seal by the use of a plug, cap, or other
equally effective device. A sealing plug or cap for the valve outlet shall be attached to the cylinder portion
of a cylinder connection device. The sealing plug or cap shall bear the following marking: “PLACE SEALING
DEVICE ON CYLINDER VALVE OUTLET WHENEVER THE CYLINDER IS NOT CONNECTED FOR USE”*.
*The equivalent French wording is “METTRE LE DISPOSITIF D’ÉTANCHÉITÉ SUR LA SORTIE DU ROBINET LORSQUE LA
BOUTEILLE N’EST PAS UTILISÉE”.
6.1.10
When a cylinder is in use, it shall be equipped with a cylinder valve and, except in the case of a recessed
cylinder valve, either a hand wheel shall be securely attached to the cylinder valve stem or a wrench for
turning the valve stem shall be readily accessible. On multiple cylinder installations, a single wrench per
installation shall fulfill this requirement.
January 2010
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B149.2-10
6.1.11
A CGA No. 791 cylinder connection device shall be equipped with a non-sealing dust cap that shall be
attached to the cylinder portion of a cylinder connection device. The protective cap shall bear the
following marking: “USE THIS CAP WHEN CYLINDER IS NOT IN USE”*.
*The equivalent French wording is “METTRE CE CAPUCHON LORSQUE LA BOUTEILLE N’EST PAS UTILISÉE”.
6.1.12
On a cylinder from which liquid is to be withdrawn
(a) the liquid service connection of the cylinder valve shall be threaded with other than the standard
female POL thread; and
(b) the liquid service outlet of the cylinder valve shall be provided with an internal excess-flow valve.
6.1.13
A cylinder that is volume filled through a separate filling connection at its installation site shall be
equipped with one of the following:
(a) a single back check valve having other than a metal-to-metal seat;
(b) a combination of an excess-flow valve and a back check valve; or
(c) a double back check valve having a metal-to-metal seat.
A protective cap for the filling connection shall be secured to the cylinder valve.
6.1.14
Cylinders requalified in accordance with Clause 6.1.5 and with a propane capacity of 40 lb (18 kg) or less
shall be equipped with a cylinder valve that does not permit the flow of propane until a positive seal has
been achieved.
6.1.15
Subject to Clauses 6.1.2 and 6.1.14, reconditioned and requalified cylinders shall be equipped with an
overfill prevention device (OPD). The overfill prevention device (OPD) shall comply with UL 2227.
6.2 Liquid level gauges on cylinders
6.2.1
A liquid level gauge that requires the bleeding of propane to the atmosphere, such as a rotary,
fixed-liquid-level, or slip-tube type, shall be designed so that any bleed valve opening is not larger than
a No. 54 drill size (1.4 mm) unless it is provided with an excess-flow valve.
6.2.2
The length of the dip tube of a fixed-liquid-level gauge shall indicate the maximum level to which a
cylinder may be filled.
6.2.3
When a fixed-liquid-level gauge is used, the length of the dip tube, prefixed with the letters “DT”, shall
be stamped on the exterior of the valve to which the dip tube is connected and on the cylinder in
accordance with CSA B340.
6.3 Automatic regulating equipment
A cylinder system having a connected separate service and reserve supply of propane shall be equipped
with an automatic changeover regulator, valve, or equivalent to permit the replacement of a cylinder
without shutting off the flow of propane to the system.
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January 2010
6.4 Purging and filling of cylinders
6.4.1
New and reconditioned propane cylinders and propane cylinders that have had their interiors exposed to
the atmosphere, such as would occur during a service valve change, shall be purged of air and moisture.
A procedure for the removal of air and moisture is described in Clause A.4 of Annex A.
6.4.2
A cylinder shall be filled by
(a) weight in accordance with Table 6.1; or
(b) volume in accordance with Table 6.2 when the cylinder is equipped with a fixed-liquid-level gauge
designed for the cylinder.
Neither a float gauge nor a dispensing meter shall be used to determine maximum cylinder filling
density.
Table 6.1
Maximum permitted filling density of a cylinder by weight
(See Clause 6.4.2(a).)
Gases
Relative density at 59°F
(15 °C)
Water weight capacity
(%)
Propane
0.51
42
Butane
0.58
51
Table 6.2
Maximum permitted filling density of a cylinder by liquid volume
(See Clause 6.4.2(b).)
Gases
Approximate relative density at 40°F (5 °C)
Maximum fill level (%)
Propane
0.51
80
Mixtures
0.55
83
Butane
0.58
86
Note: For maximum fill levels at other than at 40°F (5 °C), see Table 7.1 under headings 0–1200
USWG (0–4500 L).
6.4.3
Propane in vapour or liquid phase shall not be discharged to the atmosphere to assist in transferring the
contents of one cylinder to another, except to a cylinder of 5 lb (2.5 kg) propane capacity or less. Venting
for the purpose of gauging at a fixed-liquid-level gauge shall be permitted.
6.4.4
A cylinder that is damaged, leaking, or corroded beyond TC limits, or is due for a prescribed
re-examination, shall not be filled but shall be removed from service.
6.4.5
A cylinder manufactured to TC Specification 39, 2P, or 2Q and known as a “single-trip” or “non-refillable”
cylinder shall not be refilled.
January 2010
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B149.2-10
6.5 Storage and use of cylinders at locations other than filling plants
6.5.1 General
6.5.1.1
Cylinder storage at a filling plant shall be in accordance with Clause 7.14.
6.5.1.2
Except as permitted in this Code, a cylinder that contains propane liquid or vapour shall not be stored
or used inside any structure.
6.5.1.3
Propane cylinders shall not be stored or installed under any fire escape, stairway, or ramp used as a means
of egress from a building.
6.5.1.4
Not more than three cylinders manufactured to TC Specification 39, 2P, or 2Q and known as “single-trip”
or “non-refillable” cylinders shall be stored in a dwelling unit.
6.5.1.5
Any cylinder in storage shall not be exposed to temperatures in excess of 125°F (50 °C), an open flame, or
other source of ignition, and shall be protected from tampering or damage by fencing or equivalent
means.
6.5.1.6
A refillable cylinder, either empty or filled, that has a capacity of 45 lb (20 kg) or less shall be equipped
with an effective seal such as a plug, cap, or a quick-disconnect device. This seal shall be in place
whenever the container is not connected for use.
6.5.1.7
A cylinder, either empty or filled, that requires a cylinder valve protective collar or cap shall have such
a protective collar or cap in place while in storage.
6.5.1.8
A cylinder in storage shall have the cylinder valve closed.
6.5.1.9
An outdoor cylinder storage area, special cylinder storage room, or a cylinder storage building described
in Clause 6 shall be located in accordance with Table 6.3 with respect to
(a) the nearest building or group of buildings;
(b) the line of adjoining property that may be built upon;
(c) public thoroughfares or sidewalks; and
(d) the line of adjoining property occupied by schools, churches, hospitals, athletic fields, or other points
of public gathering.
22
January 2010
Table 6.3
Cylinder storage clearances
(See Clause 6.5.1.9.)
Quantity of propane stored,
lb (kg)
Up to and including 500 (225)
Distance, ft (m), to Items (a)
and (b) of Clause 6.5.1.9
0*†
Distance, ft (m), to Items (c)
and (d) of Clause 6.5.1.9
10 (3)
501 (225) to 2500 (1135)‡
15 (4.5)
25 (7.5)
2501 (1135) to 5000 (2270)
25 (7.5)
25 (7.5)
Over 5000 (2270)
25 (7.5)
50 (15)
*3 ft (1 m) from any building opening.
†10 ft (3 m) from any mechanical air intake.
‡Cylinders that have a maximum capacity of 20 lb (9 kg) intended for exchange or sale shall be stored in no
more than four adjacent cabinets that may be located against a noncombustible building wall at one retail
site. No more than one cabinet may be located against a combustible wall. Each cabinet shall contain no
more than 500 lb (225 kg) of propane. Cabinets shall be 3 ft (1 m) from any building opening and 10 ft
(3 m) from any mechanical air intake. Cabinets shall be 25 ft (7.5 m) from the line of adjoining property
occupied by schools, churches, hospitals, athletic fields, or other points of public gathering.
6.5.1.10
The space beneath any dock used for the storage of cylinders shall be well ventilated and either enclosed
to prevent access and accumulation of combustible material or filled in with well-tamped earth.
6.5.1.11
Subject to Clause 6.5.8, propane cylinders in storage shall be separated from other compressed gases and
flammable and combustible liquids in accordance with the following:
(a) They shall be at least 3 ft (1 m) from other flammable compressed gas containers.
(b) They shall be at least 20 ft (6 m) from containers or dispensers for flammable and combustible
liquids, or oxidizing, corrosive, or toxic gases.
6.5.1.12
Electrical wiring, equipment, and fixtures installed within a building or special room for the storage of
cylinders shall comply with Part H of Table 7.6.
6.5.1.13
For an outdoor cylinder storage area, electrical equipment and fixtures shall comply with Part K of
Table 7.6.
6.5.1.14
A cylinder that contains propane liquid or vapour shall not be stored on the roof of a building.
6.5.2 Cylinders stored outdoors for commercial or industrial use or sale
6.5.2.1
Except as permitted in Clauses 6.5.2.5, 6.5.3.2, 6.5.4.2, and 6.5.5.2, cylinders shall be fenced in
accordance with Clause 6.5.2.2 or 6.5.2.3 or shall be enclosed in a storage cabinet in accordance with
Clause 6.5.2.4.
January 2010
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B149.2-10
6.5.2.2
The fence shall
(a) be either of the following, whichever is higher:
(i) at least 6 ft (2 m) high, and may include three strands of barbed wire at the top, spaced 4 in
(100 mm) apart; or
(ii) at least 1 ft (300 mm) higher than the height of the highest cylinder that can be stored on a
dock;
(b) be made of metal wire of not less than No. 9 SWG (3.7 mm), with openings not greater than 2 × 2 in
(50 × 50 mm); and
(c) have posts made of angle iron, pipe, or equivalent material, spaced not more than 10 ft (3 m) apart,
and set securely.
6.5.2.3
Alternatively, the fence shall
(a) be at least 6 ft (2 m) high, measured from grade level, and may include three strands of barbed wire
at the top, spaced 4 in (100 mm) apart;
(b) be made of metal wire of not less than No. 9 SWG (3.7 mm), with openings not greater than 6 × 6 in
(150 × 150 mm);
(c) have posts made of angle iron, pipe, or equivalent, spaced not more than 10 ft (3 m) apart, and set
securely;
(d) enclose, and be located not less than 4 ft (1.25 m) from, the cylinder docks or storage area; and
(e) be so located that the valve of any cylinder stored within the fence is not less than 4 ft (1.25 m) from
the fence.
Δ
6.5.2.4
If cylinders stored outdoors are enclosed in a storage cabinet, the storage cabinet shall fulfill the following
requirements:
(a) It shall be at least 6 ft (2 m) high, measured from grade level, unless supplied with a top cover.
(b) The wall or top cover material shall be metal not less than No.10 SWG, having openings not greater
than 2 in² (12.9 cm²).
(c) It shall be ventilated to the outside air on both the top and the bottom of the cabinet, at minimum.
(d) It shall be securely anchored in an upright position.
6.5.2.5
A cylinder stored outdoors against an industrial building on the property of the user shall meet the
requirements of Clause 6.5.1. The fencing or storage cabinet required by Clause 6.5.2.1 shall not be
mandatory, provided that
(a) the cylinder is stored in an area that provides protection from tampering;
(b) the cylinder is stored in an area free of vehicular or mobile equipment travel, or protected by barriers
or the equivalent;
(c) all cylinders are 25 ft (7.5 m) from any other building, property line, or point of assembly;
(d) the total quantity of propane stored does not exceed 1000 lb (450 kg);
(e) the relief valve on any cylinder is not less than 3 ft (1 m) horizontally from any building opening
that is below the level of the relief valve discharge; and
(f) the relief valve discharge is not less than 10 ft (3 m) on a horizontal plane from the air intake of any
appliance or air-moving equipment.
6.5.2.6
“NO SMOKING”* signs shall be prominently displayed at all cylinder storage areas. These signs shall be in
accordance with Clause 7.12.3.
*The equivalent French wording is “DÉFENSE DE FUMER”.
24
January 2010
6.5.3 Cylinders at construction sites
6.5.3.1
A cylinder not connected for use shall be stored outdoors.
Δ
6.5.3.2
Cylinders shall
(a) be stored in an area that provides protection from tampering;
(b) be stored in an area free from vehicular or mobile equipment travel, or protected by barriers or the
equivalent;
(c) be placed such that the relief valve on any cylinder is not less than 3 ft (1 m) horizontally from any
building opening that is below the level of the relief valve discharge;
(d) be placed such that the relief valve discharge is not less than 10 ft (3 m) on the horizontal plane from
the air intake of any appliance or air-moving equipment;
(e) be stored in an area where “NO SMOKING” signs are prominently displayed. These signs shall be in
accordance with Clause 7.12.3;
(f) be a distance of 25 ft (7.5 m) from any other building, property line, or point of assembly; and
(g) not store more than 1000 lb (450 kg) of propane in total.
6.5.3.3
Each cylinder on a construction site shall be equipped with a collar designed to protect the cylinder valve
when in use.
6.5.3.4
A cylinder shall not be filled on a construction site unless it is
(a) installed in accordance with the requirements of Clause 6.7; or
(b) filled at a location that meets the clearance requirements of Clause 7.17.1.
Δ
6.5.3.5
A cylinder may be used indoors in the construction, repair, or improvement of a building or structure,
including its fixtures and equipment, provided that
(a) a pressure regulator is employed and directly connected to the appliance or cylinder valve, or
located on a manifold that is connected to the cylinder valve;
(b) the total capacity of cylinders connected together does not exceed 300 lb (135 kg) of propane, and
not more than one such manifold of cylinders is located in the same floor area unless separated by a
distance of at least 50 ft (15 m);
(c) any cylinder with a capacity greater than 1 lb (0.5 kg) of propane is equipped with an excess-flow
valve. The excess-flow valve shall be either integral to the cylinder valve or in the connection with
the cylinder valve outlet. In either case, it shall be installed in such a manner that undue strain
beyond the excess-flow valve will not cause breakage between the cylinder and the valve;
(d) the cylinder-regulating equipment and manifold are not located where they are subject to damage
or to temperatures in excess of 125°F (50 °C);
(e) when repair work is being carried out in a building not under construction and occupied, any
cylinder used in the repair work is under the supervision of the operator at all times;
(f) each cylinder is provided with a protective collar;
(g) a cylinder with a capacity up to and including 100 lb (45 kg) of propane that is connected for use to
a construction heater is secured in an upright position; and
(h) any construction heater connected to the cylinder is installed and used in accordance with
Clause 7.18 of CSA B149.1.
6.5.3.6
A cylinder in use inside a building shall not be located near an exit, stairway, or area intended for the safe
evacuation of people.
January 2010
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B149.2-10
6.5.3.7
Connection and disconnection of cylinders shall be done in a well-ventilated area with no source of
ignition within 10 ft (3 m) of the point of connection.
6.5.4 Cylinders supplying propane for welding, cutting, and preheating
processes
6.5.4.1
6.5.4.2
The cylinder storage area shall comply with Clause 6.5.2, except that enclosing as required by
Clause 6.5.2.1 shall not be mandatory, provided that the cylinder is stored
(a) in a secure area and is free from tampering; and
(b) in an area free of vehicular or mobile equipment travel, or protected by barriers or equivalent.
6.5.4.3
A cylinder may be used indoors to supply propane for welding, cutting, and preheating when portability
is necessary, provided that
(a) a pressure regulator is employed and directly connected to the equipment or cylinder valve, or
located on a manifold that is connected to the cylinder valve;
(b) when cutting or welding, the total capacity of cylinders connected to other industrial gas cylinders
does not exceed 100 lb (45 kg) of propane, and not more than one manifold of cylinders is located
in the same area unless separated by a distance of 15 ft (4.5 m);
(c) when preheating, the total capacity of cylinders connected to other industrial gases does not exceed
200 lb (90 kg) of propane, and not more than one manifold of cylinders is located in the same area
unless separated by a distance of 30 ft (9 m);
(d) the cylinder-regulating equipment and manifold are not located where they are subject to damage
or to temperatures in excess of 125°F (50 °C);
(e) the cylinder is provided with a protective collar; and
(f) when the cylinder has a capacity greater than 1 lb (0.5 kg) of propane, it is equipped with an
excess-flow valve. The excess-flow valve shall be either integral to the cylinder valve or in the
connection with the cylinder valve outlet. In either case, it shall be installed in such a manner that
undue strain beyond the excess-flow valve will not cause breakage between the cylinder and the
valve.
6.5.4.4
A cylinder in use inside a building shall not be located near an exit, stairway, or area normally used or
intended for the safe evacuation of people.
6.5.4.5
6.5.5 Cylinders at commercial and industrial sites to supply propane
for industrial trucks and ice maintenance equipment
6.5.5.1
26
January 2010
6.5.5.2
The cylinder storage area shall meet the requirements of Clause 6.5.2, except that enclosing as required
by Clause 6.5.2.1 shall not be mandatory, provided that the cylinder is stored
(a) in a secure area and is free from tampering; and
(b) in an area free of vehicular or mobile equipment travel, or protected by barriers or equivalent.
6.5.5.3
6.5.6 Storage of non-refillable cylinders in retail outlets and their
warehouses (mercantile occupancies)
6.5.6.1
The requirements of Clause 6.5.6 apply to non-refillable cylinders (TC-39, TC-2P, and TC-2Q) with net
capacities of more than 0.36 lb (150 g) and less than 1.05 lb (475 g), commonly referred to as
“single-trip” cylinders.
6.5.6.2
Cylinders located within the display area of a retail outlet (mercantile occupancy) shall be displayed
as follows:
(a) Cylinders shall be removed from cartons, or cartons shall be display cut.
(b) Cylinders shall be securely stacked to a height of no more than 6 ft (2 m) from the base to the top
of the display. Shelves used to display cylinders shall be of a stable construction and shall not exceed
8 ft (2.5 m) in overall height.
(c) Displays of cylinders shall be in compliance with the clearances, separations, quantities, and other
requirements listed in Table 6.4.
January 2010
27
B149.2-10
Table 6.4
Storage of non-refillable cylinders in mercantile occupancies
(See Clause 6.5.6.2(c).)
For sprinklered* areas
For areas without sprinklers
Separation from sources of ignition
25 ft (7.6 m)
25 ft (7.6 m)
Separation from marked fire exits
25 ft (7.6 m)
25 ft (7.6 m)
Separation between display arrays of cylinders
8 ft (2.5 m)
8 ft (2.5 m)
Separation of display arrays from Class 1 and 2
flammable liquids, Level 2 and 3 aerosols, oxidizers,
and highly combustible products made from or using
Styrofoam® for packing
8 ft (2.5 m)
8 ft (2.5 m)
500 lb (227 kg)†
300 lb (135 kg)‡
Maximum combined net weight of cylinders, Level 2
and 3 aerosols, oxidizers, and Class 1 (flammable
liquids) and Class 2 (combustible liquids) in
20 × 20 ft (6 × 6 m) area
1000 lb (454 kg)§
300 lb (135 kg)‡
Total aggregate net weight of cylinders in total
display area
1000 lb (454 kg)
300 lb (135 kg)‡
Maximum net weight of cylinders in each display
*Sprinklered in accordance with NFPA 13 for at least ordinary hazard occupancies.
†Quantity shall be reduced to 300 lb (135 kg) when storage above cylinders prevents direct discharge from sprinklers
located overhead.
‡Cylinders shall be protected on three sides by metal or wire bulkheads.
§Quantities in excess of 1000 lb (454 kg) shall be relocated to other 20 × 20 ft (6 × 6 m) areas separated by a minimum
distance of 25 ft (7.6 m).
6.5.6.3
Cylinders located in the backstock (warehouse) area of a retail outlet (mercantile occupancy) shall be
stored as follows:
(a) Cylinders shall be in packaging approved by, and marked in accordance with, the Transportation of
Dangerous Goods Regulations and securely stacked to a height of not more than 6.56 ft (2 m).
(b) Storage of cylinders shall be in compliance with the separation, clearances, quantities, and other
requirements listed in Table 6.5.
28
January 2010
Table 6.5
Storage of non-refillable cylinders in the backstock (warehouse)
area of mercantile occupancies
(See Clause 6.5.6.3(b).)
For sprinklered* areas
For areas without sprinklers
Separation from sources of ignition
25 ft (7.6 m)
25 ft (7.6 m)
Separation from marked fire exits
25 ft (7.6 m)
25 ft (7.6 m)
8 ft (2.5 m)
8 ft (2.5 m)
Maximum net weight of cylinders in each storage
area
1000 lb (454 kg)†
300 lb (135 kg)
Maximum net weight of cylinders, Class 1
(flammable liquids) and Class 2 (combustible liquids),
Level 2 and 3 aerosols, and oxidizers in a 20 × 20 ft
(6 × 6 m) area
2000 lb (908 kg)‡
300 lb (135 kg)
Total aggregate net weight of cylinders in entire
backstock area
4000 lb (1816 kg)
300 lb (135 kg)
Clearance between sprinkler heads and arrays
of cylinders
As required by NFPA 30B for Level 3 aerosol products
Separation from Class 1 flammable liquids, oxidizers,
Level 2 and 3 aerosols, plastic packaging, and
Styrofoam®
*Sprinklered in accordance with NFPA 13 for at least ordinary hazard occupancies.
†Quantity shall be reduced to 300 lb (135 kg) when storage above cylinders prevents direct discharge from sprinklers
located overhead.
‡Quantities in excess of 2000 lb (908 kg) shall be relocated to other 20 × 20 ft (6 × 6 m) areas separated by a minimum
distance of 25 ft (7.6 m).
6.5.7 Cylinders at sites where propane is supplied for cleaning and
polishing equipment
6.5.7.1
A cylinder not connected for use shall be stored outdoors in accordance with Clause 6.5.2 or indoors in
accordance with Clause 6.5.8.
6.5.7.2
Cylinders stored outdoors in a storage area as required by Clause 6.5.7.1 shall not contain more than a
total of 200 lb (90 kg) of propane.
6.5.7.3
A sign indicating “NO SMOKING”* shall be permanently displayed in the cylinder storage area. The sign
shall be in accordance with the requirements for signs in Clause 7.12.3.
6.5.7.4
A cylinder used to supply propane for cleaning and polishing equipment shall be equipped with an
excess-flow valve installed
(a) as an integral component of the cylinder valve; or
January 2010
29
B149.2-10
(b) immediately downstream of the cylinder valve in such a manner that strain on the excess-flow
valve, or on components located downstream of the excess-flow valve, will not cause breakage of
components located upstream of the excess-flow valve.
6.5.7.5
A cylinder connected for use indoors shall not have a capacity exceeding 33-1/3 lb (15 kg).
6.5.7.6
6.5.7.7
When a cleaning or polishing unit is not in use and stored indoors, the cylinder shall be removed and
stored in accordance with Clause 6.5.2 or 6.5.8.
6.5.7.8
When the cylinder is attached to the cleaning or polishing unit for use, it shall be attended by the operator
at all times.
6.5.8 Storage of cylinders located in special rooms or buildings
Buildings or rooms in which propane cylinders are stored shall be constructed in accordance with
Clause 6.5.10. Storage within the building or room shall be limited to propane containers, other
flammable gas containers, and related equipment.
6.5.9 Cylinders supplying propane to portable food-serving carts
located indoors
6.5.9.1
Cylinders manufactured to TC-DOT Specifications 39 and 2P, known as “single-trip” or “non-refillable”
cylinders, having a maximum water capacity of 2.7 lb (1.2 kg) and filled with no more than 16.8 oz
(0.48 kg) of propane, shall be permitted for use indoors to supply propane to food service appliances.
6.5.9.2
Cylinders shall be directly connected to the food service appliance without the use of hose, and no more
than 2 cylinders per appliance shall be connected for use at one time.
Δ
6.5.9.3
Storage in restaurants and non-residential food service locations of cylinders manufactured to TC-DOT
Specifications 39 and 2P, known as “single-trip” or “non-refillable” cylinders, having a maximum water
capacity of 2.7 lb (1.2 kg) and filled with no more than 16.8 oz (0.48 kg) of propane, shall be limited
to 10 cylinders. Additional TC-DOT Specifications 39 and 2P cylinders, up to an equivalent of 250 L
(approximately 638 cylinders), may be stored inside the restaurant or non-residential food service location,
if stored inside an approved ULC-C1275 or UL-1275 cabinet.
6.5.10 Construction of special cylinder storage rooms or buildings
6.5.10.1
The walls, floors, and ceilings of a cylinder storage room that is within, or adjacent to, other parts of a
building shall be constructed of material having at least a 2 h fire-resistance rating.
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January 2010
6.5.10.2
A portion of the exterior walls or roof shall have explosion relief to the outdoors of not less than 1 ft2 for
each 50 ft3 (0.1 m2 for each 1.4 m3) of building volume. The type of explosion venting shall be one of the
following:
(a) an open area;
(b) an outwardly opening sash;
(c) explosion relief panels; or
(d) single-strength glass.
6.5.10.3
Each opening from a cylinder storage room to another part of the building shall be protected by a
swinging door having a 1.5 h fire-resistance rating. The door rating shall be established on the basis of the
requirements in ULC CAN4-S104, and the door shall not be permitted to include glass panels or vents. All
doors shall be gasketed to prevent escape of propane.
6.5.10.4
Each cylinder storage room shall be ventilated to the outside air with vents located at the top and the
bottom of a wall. The vents shall be distributed to obtain maximum air circulation across the floor, and the
ratio of the size of each opening to the size of the floor area shall be 1:500. A vent opening shall be not
less than 10 ft (3 m) horizontally from any air intake of any appliance, air-moving equipment, or other
opening into a building, and not less than 25 ft (7.5 m) from any source of ignition.
6.5.10.5
The floor of a cylinder storage room shall not be below grade. Any floor area below the storage room shall
be well ventilated and kept free of combustible material or filled in.
6.6 Transportation of cylinders
6.6.1
In addition to the requirements set out in Clause 6.6, propane that is transported or offered for transport
shall comply with the Transportation of Dangerous Goods Regulations of Transport Canada.
6.6.2
Valves and equipment on a cylinder shall be protected from damage by a ventilated cap, collar, or recess
accommodating the cylinder valve.
6.6.3
Any cylinder being transported shall be kept away from open flame or direct heat.
6.6.4
A cylinder shall not be transported or stored in a vehicle except when the vehicle is provided with a means
to vent the cylinder-carrying space to the outdoors. In such circumstances, each distributor shall take all
reasonable precautions, including the posting of signs, to inform customers of this safety requirement.
6.6.5
Any cylinder being transported shall be secured to prevent damage. It shall be transported in such a
position that the cylinder relief valve is in direct communication with the vapour space of the cylinder at
all times.
6.6.6
Every cylinder delivery vehicle shall carry not less than one dry chemical ULC-listed fire extinguisher of
at least a 10-B, C rating.
January 2010
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B149.2-10
6.6.7
Every cylinder delivery vehicle shall be marked legibly and conspicuously on both sides and on the rear,
in letters not less than 4 in (100 mm) high and of a colour that contrasts sharply with the background,
with at least one of the following:
(a) the words “COMPRESSED LP GAS”*;
(b) the word “FLAMMABLE”†;
(c) the word “PROPANE”‡; or
(d) the name of the carrier if the name includes the word “PROPANE”‡.
*The equivalent French wording is “GAZ PL COMPRIMÉ”.
†The equivalent French wording is “INFLAMMABLE”.
‡The equivalent French wording is “PROPANE”.
6.7 Installation of cylinders
6.7.1
Each cylinder shall be set upon a firm, level, weatherproof base, located on consolidated ground at grade
level, and shall be equipped with flexible connectors to offset any movement affecting the piping or
tubing.
6.7.2
Except as permitted in Clauses 6.5, 6.7.3, 10, and 11.9(b) of this Code and Clause 5.2.2 of CSA B149.5,
a cylinder shall be installed outside a building, with the discharge from the cylinder relief valve not less
than
(a) 3 ft (1 m) on a horizontal plane from any building opening when the opening is below the level of
the relief valve discharge;
(b) 10 ft (3 m) on a horizontal plane from the air intake of any appliance or air-moving equipment; and
(c) 10 ft (3 m) on a horizontal plane from any source of ignition.
Items (b) and (c) shall not apply to an appliance when the cylinder retention means is incorporated
and certified as part of the appliance.
6.7.3
Notwithstanding the requirements in Clauses 6.5 and 6.7.2, a cylinder containing a maximum of 5 lb
(2.5 kg) of propane, which is not connected to any other cylinder, may be connected for use indoors with
the permission of the authority having jurisdiction.
6.7.4
A cylinder shall not be installed below grade. This requirement shall not prohibit an installation in a
compartment or recess below grade level, such as a niche in a slope or terrace wall that is used for no
other purpose, provided that
(a) the cylinder and regulating equipment are not in contact with the ground;
(b) the compartment or recess is drained and ventilated horizontally outdoors from its lowest level; and
(c) the discharge outlet from any relief valve is located at least 3 ft (1 m) horizontally from any building
opening that is below the level of such discharge outlet.
6.7.5
A cylinder shall not be installed above another cylinder.
6.7.6
When damage to a cylinder from vehicular traffic is a possibility, protection shall be provided in
compliance with the requirements of Clause 7.19.4.
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January 2010
6.7.7
A maximum of four cylinders manifolded together to form a system may be located within 10 ft (3 m)
of a common wall of a building. No more than one such manifolded system may be located against the
common wall of a building unless separated by a distance of 10 ft (3 m).
6.8 Rooftop installation of cylinder systems
A cylinder system may be installed on the flat roof of a building, provided that
(a) the roof is of noncombustible construction with a 2 h fire-resistance rating;
(b) the load on the roof does not exceed the design load;
(c) the total capacity of the cylinder(s) connected to any one manifold is not greater than 200 lb (90 kg)
of propane;
(d) each manifold of cylinders is separated from other manifolds by a fire separation of 1 h fire-resistance
rating or by a clear 50 ft (15 m) space separation;
(e) the cylinders are located in areas where there is free air circulation and at a distance of at least 10 ft
(3 m) horizontally from any building opening, appliance air intake, or air-moving equipment;
(f) during transfer of each cylinder from the point of delivery to the roof and from the roof to the point
of pick-up, each cylinder valve outlet is plugged and the valve protecting cap or collar is in place;
(g) transfer in accordance with Item (f) by elevator shall be by freight or service elevators, or by
passenger elevator if no passengers are permitted on the elevator other than the maintenance or
delivery personnel involved with the cylinder;
(h) hose is not used to conduct propane;
(i) each installation is reported in writing by the installer to the fire department concerned; and
(j) the building is sprinklered if it contains a high-hazard industrial occupancy.
6.9 Diking and grading
6.9.1
When a cylinder is installed adjacent to a storage area for flammable or combustible liquids, protection
such as diking, diversion curbs, or grading shall be provided to prevent any accumulation of these liquids
under the cylinder.
6.9.2
When dikes surround a flammable or combustible liquid tank, a cylinder shall not be installed within the
diked area and shall be located not less than 10 ft (3 m) from the centreline of the dike.
6.9.3
A cylinder may be installed adjacent to a tank containing a combustible or flammable liquid, provided
that the capacity of the tank of such liquid is 250 gal (1150 L) or less. When the capacity of the tank of
combustible or flammable liquid exceeds 250 gal (1150 L), the separation between the cylinder and the
tank shall be a minimum of 20 ft (6 m).
7 Tank systems, filling plants, and refill centres
7.1 General
7.1.1
Subject to Clause 5.2.3(b), a tank shall have a Maximum Allowable Working Pressure (MAWP) of not less
than 250 psig (1750 kPa) and shall be in accordance with CSA B51 and applicable provincial or territorial
regulations covering unfired pressure vessels.
January 2010
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B149.2-10
7.1.2
Welding shall not be done to the shell, head, or any other part of a tank subject to internal pressure,
except with the approval and under the supervision of the boiler and pressure vessel inspection authority
of the province or territory in which it is installed.
7.1.3
Field welding of a tank shall be made only on saddle plates or brackets supplied by the manufacturer of
the tank.
7.1.4
Every steel tank shall be kept painted.
7.1.5
A tank with an aggregate capacity in excess of 2000 USWG (7500 L) shall not be installed
(a) under an electrical transmission line and shall be located a minimum horizontal distance from any such
line equal to the property clearance requirements of Clauses 7.10.2 and 7.16;
(b) under an electrical distribution line and shall be located not less than 25 ft (7.5 m) in any direction
from any such line; and
(c) over an underground electrical distribution line and shall be located not less than 5 ft (1.5 m) from
any such line.
7.1.6
When necessary, diking, diversion curbing, or grading shall be provided
(a) to prevent any accumulation of flammable or combustible liquids under a propane tank; or
(b) to contain or divert any loss of liquid propane from a source of ignition.
7.1.7
A propane tank shall not be installed within a diked area containing a tank of flammable or combustible
liquid and shall be located not less than 20 ft (6 m) from the centreline of the dike.
7.1.8
Except as prohibited in Clause 7.1.7, a propane tank of 125 USWG (475 L) capacity or less may be
installed adjacent to a tank containing combustible or flammable liquid, provided that the capacity of the
tank of such liquid is 250 gal (1150 L) or less. When the capacity of either tank is in excess of the
applicable limits, the separation between the propane tank and the combustible or flammable liquid
tank shall be not less than 20 ft (6 m). In the case of an underground tank, the separation may be
reduced to 10 ft (3 m).
7.1.9
When a tank truck, tank trailer, or cargo liner is used as a storage tank at a point of use, the following
shall apply:
(a) the requirements of Clause 7.10; and
(b) after the tank truck, tank trailer, or cargo liner has been placed in position, the loading on the
wheels, axle, or suspension shall be removed.
7.1.10
When the liquid connections of horizontal or vertical tanks are manifolded together, the tops of the tanks
shall be at the same horizontal level.
7.1.11
Access to a tank-filling connection that is located more than 5 ft (1.5 m) above grade or a tank pad shall
be provided by a concrete or steel step(s).
34
January 2010
7.1.12
Return lines from pumps, meters, or dispensing devices, if connected to the liquid space of a tank, shall be
equipped with a back check valve.
7.1.13
The requirements of Clause 7.19 are intended to provide protection from vehicular damage only and
do not include all the engineering factors that can be required. (See Annex B.)
7.1.14
When a tank is installed in a location that does not afford reasonable protection from motor vehicle
damage, it shall be protected by posts or guardrails as specified in Clause 7.19.4.
7.1.15
Any kiosk within 25 ft (7.5 m) of the point of transfer shall not be heated by an appliance with an
open flame.
7.1.16
When a tank is installed in an area of high snowfall,
(a) the location of the tank shall be marked with stakes that extend above the maximum anticipated
snow depth; and
(b) the regulator, relief valves, and fill valves shall be covered by a protective cap or dome.
7.2 Relief valves
7.2.1
A tank shall be equipped with a properly sized, spring-loaded relief valve that meets the requirements
of the provincial or territorial authority where it is to be installed.
7.2.2
All relief valves shall have direct communication with the vapour space of tanks.
7.2.3
All relief valves shall be so arranged that the possibility of tampering will be minimized. If the pressure
setting or adjustment is by external means, the relief valve shall be provided with means for sealing the
adjustment.
7.2.4
A shut-off valve or other device shall not be installed between a relief valve and a tank, except that a
shut-off valve may be used when the full required flow capacity is maintained through another relief
valve.
7.2.5
A loose-fitting rain cap shall be provided for all tank relief valves.
7.3 Emergency shut-off valves
7.3.1
An emergency shut-off valve shall be installed at all tank truck or cargo liner transfer locations when
(a) the tank has a capacity in excess of 5000 USWG (18 900 L); or
(b) tanks are manifolded together, utilizing a common or manifolded liquid transfer line, and the tanks
have an aggregate volume in excess of 5000 USWG (18 900 L).
January 2010
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B149.2-10
7.3.2
When an emergency shut-off valve is required by Clause 7.3.1, it shall be installed within 20 ft (6 m) of
linear pipe from the terminal end of the hose or swivel-type piping.
7.3.3
When the propane flow is only in one direction, a back check valve may be used in lieu of an emergency
shut-off valve, provided that the back check valve is installed in the fixed piping downstream of the hose
or swivel-type piping.
7.3.4
An emergency shut-off valve shall be installed so that the temperature-sensitive element in the valve or
a supplemental temperature-sensitive element that has a melting point not in excess of 250°F (120 °C) is
connected to actuate the valve in case of fire and is located not more than 5 ft (1.5 m) from the nearest
end of the hose or swivel-type piping connected to the line in which the valve is installed.
7.3.5
An emergency shut-off valve and back check valve shall be installed in the plant piping to ensure that
any break resulting from a pull occurs on the hose or swivel-type piping side of the connection while
retaining the valves and piping intact on the plant side of the connection.
7.3.6
An emergency shut-off valve shall incorporate all of the following means of closure:
(a) automatic shut-off through thermal actuation;
(b) manual shut-off from a remote location; and
(c) manual shut-off at the installed location.
7.3.7
Secure anchorage for all emergency shut-off valves shall be provided in the form of designed bulkheads
of reinforced concrete or steel.
7.3.8
Installation of a system incorporating an emergency shut-off valve shall be in accordance with the
installation requirements of the manufacturer of the components of the system.
7.3.9
A shear point shall be designed in the piping downstream of an emergency shut-off valve and the
bulkhead anchorage.
7.4 Excess-flow and back check valves
7.4.1
Subject to Clauses 7.4.2 to 7.4.4 and 7.5.2, each tank opening utilized for product flow shall be equipped
with an excess-flow valve sized for the application or a back check valve. A combination excess-flow
valve and back check valve designed for liquid evacuation shall not be acceptable for this purpose.
7.4.2
A tank greater than 125 USWG (475 L) capacity that does not have a valve that can be used for liquid
evacuation shall be provided with a plugged-type combination excess-flow valve and back check valve
designed for this purpose, the size of which shall be not less than NPS 3/4. A plugged tank opening shall
not be acceptable for this purpose.
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January 2010
7.4.3
An excess-flow valve shall not be required in the vapour withdrawal service piping from a tank when
(a) the discharge from a service outlet is controlled by a shut-off valve
(i) threaded directly into the service outlet of the tank; or
(ii) that is an integral part of, or threaded directly into, a heavy-duty fitting that is threaded into or
on the service outlet of the tank;
(b) the shut-off valve is equipped with an attached hand-wheel or equivalent; and
(c) the controlling orifice between the contents of the tank and the outlet of the tank shut-off valve
does not exceed 5/16 in (8 mm) in diameter.
7.4.4
Instead of using an excess-flow valve, a tank opening may be fitted with a quick-closing internal valve
that, except during operating periods, shall remain closed. The internal mechanism for the valve shall be
provided with secondary controls, consisting of a fusible link or plug with a melting point of not more than
220°F (105 °C), that shall cause the internal valve to close in case of fire.
7.4.5
A tank of 2000 USWG (7500 L) capacity or less, filled on a volumetric basis, shall be equipped for filling
into the vapour space.
7.4.6
The filling connection of every tank with a capacity in excess of 200 lb (90 kg) of propane shall be
equipped with one of the following:
(a) a combination of a back check valve and an excess-flow valve;
(b) one double or two single back check valves, one seat of which shall be other than the
metal-to-metal seat type; or
(c) a valve of the positive shut-off type in conjunction with either an internal excess-flow valve or an
internal back check valve.
7.4.7
A tank with a capacity of 200 lb (90 kg) of propane or less installed outside a building may have the filling
connection equipped with a single back check valve of other than the metal-to-metal seat type.
7.5 Pressure gauges on tanks
7.5.1
Every storage tank of 2000 USWG (7500 L) capacity or over shall be provided with a pressure gauge.
7.5.2
A nozzle opening in a tank or a through-fitting attached directly on a tank to which a pressure gauge
connection is made need not be equipped with a shut-off or excess-flow valve if such an opening is
restricted to not larger than a No. 54 drill size (1.4 mm).
7.6 Liquid-level gauges on tanks
7.6.1
Each tank shall be equipped with at least one gauge of the rotary, slip-tube, or fixed-liquid-level type.
7.6.2
A gauge of the float type need not be equipped with an excess-flow valve.
January 2010
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B149.2-10
7.6.3
Liquid-level gauges, such as rotary, fixed-liquid-level, or slip-tube types, that require the bleeding of
propane to the atmosphere shall be so designed that no bleed valve opening is larger than a No. 54 drill
size (1.4 mm) unless provided with an excess-flow valve.
7.6.4
The length of a dip tube of a fixed-liquid-level gauge shall indicate the maximum liquid level to which
a tank may be filled.
7.6.5
When a fixed-liquid-level gauge is used on a tank, the length of the dip tube, prefixed with the letters
“DT”, shall be stamped on the exterior of the gauge and on the tank.
7.7 Filling of tanks
7.7.1
When a rotary, slip-tube, or equivalent type gauge is used, the filling density shall not exceed that
specified in Table 7.1.
Δ
7.7.2
When a fixed-liquid-level gauge is used on an above-ground storage tank, the filling density shall not
exceed that specified in Table 7.2.
7.7.3
A tank with under 300 lb (135 kg) water capacity may be filled by weight in accordance with
Clause 6.4.2(a).
7.7.4
Propane in vapour or liquid phase shall not be discharged to the atmosphere to assist in transferring the
contents of one tank to another, except to a container with a maximum capacity of 5 lb (2.5 kg) of
propane or less. Venting for the purpose of gauging at the liquid-level gauge shall be permitted as
described in Clause 7.6.3.
7.7.5
A tank shall be gauged and filled outdoors or in a building designed for such a purpose.
38
January 2010
Table 7.1
Maximum permitted filling density of a tank by liquid volume
(rotary or slip-tube gauge)
(See Clause 7.7.1 and Table 6.2.)
Temperature of liquid
Propane relative density 0.51
Butane relative density 0.58
°F
(°C)
0–1200 USWG
(0–4500 L), %
Over 1200 USWG
(over 4500 L), %
0–1200 USWG
(0–4500 L), %
Over 1200 USWG
(over 4500 L), %
–50
(–45)
71.4
76.7
79.1
83.8
–40
(–40)
72.2
77.6
79.9
84.6
–30
(–35)
73.0
78.5
80.5
85.3
–20
(–29)
73.9
79.4
81.2
86.0
–10
(–23)
74.9
80.4
82.0
86.8
0
(–18)
75.7
81.4
82.7
87.6
10
(–12)
76.7
82.4
83.5
88.4
20
(–7)
77.6
83.4
84.4
89.3
30
(–1)
78.7
84.6
85.2
90.2
40
(4)
79.9
85.8
86.1
91.2
50
(10)
81.0
87.2
87.0
92.1
60
(16)
82.0
88.6
87.9
93.1
70
(21)
83.7
90.1
88.9
94.1
80
(27)
85.1
91.6
89.9
95.2
90
(32)
86.8
93.3
90.9
96.3
100
(38)
88.4
95.3
92.1
97.6
Table 7.2
Maximum permitted filling density of a tank by liquid volume
(fixed-liquid-level gauge)
(See Clause 7.7.2.)
Temperature
of liquid
Propane relative density 0.51
Butane relative density 0.58
°F
(°C)
0–1200 USWG
(0–4500 L), %
Over 1200 USWG
(over 4500 L), %
0–1200 USWG
(0–4500 L), %
Over 1200 USWG
(over 4500 L), %
40
(4)
79.9
85.8
86.1
91.2
7.7.6
A tank and its supports that show evidence of damage, deterioration, or incorrect installation shall not
be filled.
January 2010
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B149.2-10
Δ
7.8 Installation of underground tanks
7.8.1
A tank shall only be installed underground with the approval of the authority having jurisdiction.
7.8.2
A tank to be installed underground shall be designed and identified by the tank manufacturer for
underground service and shall be provided with means for placing it into position without damage to the
tank or its protective coating. Any damage to the coating shall be repaired in accordance with the
manufacturer’s instructions before backfilling.
7.8.3
Buried or submerged surfaces of tanks, piping, and fittings shall be cathodically protected by impressed
current or by the use of sacrificial anodes supplied and sized by the tank manufacturer or shall be designed
by a registered professional engineer accredited by the National Association of Corrosion Engineers
(NACE).
7.8.4
If cathodic protection is provided by the use of sacrificial anodes,
(a) the outer surface of the tank shall be blast cleaned so that all surfaces are free from dirt, grease, and
loose material;
(b) the outer surface of the tank shall be coated to a thickness of 0.016 in (0.4 mm) with a compound
conforming to the requirements of either CAN/ULC-S603.1 or CAN/CGSB-1.184;
(c) the outer surface of the tank shall be coated with a compound certified by the manufacturer to meet
the requirements listed in Item (b); and
(d) the cathodic protection design criteria shall include a current density of 11.58 mA/ft2 (125 mA/m2)
applied on the coated structure’s surface.
7.8.5
If cathodic protection is provided by the use of impressed current, the tank, piping, and fittings need not
be coated.
7.8.6
Cathodic protection shall be designed and operated to continuously maintain a minimum potential on all
buried or submerged surfaces of –850 mV as measured with respect to a copper/copper sulphate
reference electrode.
7.8.7
Corrosion-control monitoring shall be done on an annual basis to ensure that the requirement specified in
Clause 7.8.6 is satisfied using a copper/copper sulphate reference electrode. Measurement of impressed
current systems shall be made by means of a permanently installed meter clearly marked to meet the
requirement of Clause 7.8.6. Records of test results shall be maintained.
7.8.8
The tank, piping, and fittings shall be dielectrically isolated from other metal structures by the use of
dielectric unions, couplings, flange sets, or specially made isolating fittings. To accommodate electrical
system grounding to the pump, either a polarization cell shall be provided or the pump shall be
dielectrically isolated from the tank and piping.
40
January 2010
7.8.9
An underground tank shall be installed in accordance with the manufacturer’s installation instructions and
be set on a firm foundation and surrounded with sand firmly tamped into place. The foundation shall be
made of
(a) 12 in (300 mm) of firmly tamped sand; or
(b) 6 in (150 mm) of firmly tamped sand over a concrete base.
At least 12 in (300 mm) of firmly tamped sand backfill, free of rocks and gravel, shall surround all
surfaces of the tank.
7.8.10
Where flooding conditions can occur, an underground tank shall be securely anchored or weighted to
prevent flotation.
7.8.11
The minimum distance between the top of an underground tank and grade shall be in accordance with
Table 7.3. Cover slabs shall extend at least 12 in (300 mm) beyond the tank perimeter on all sides.
Adequate protection in the form of fencing, guardrails, or bumper posts that comply with the requirements
of Clause 7.19.4 shall be provided for the above-ground piping system and relief valve exhaust stacks to
prevent abrasive action or physical damage from vehicular traffic.
7.8.12
An underground storage tank shall be located a minimum distance of
(a) 5 ft (1.5 m) from a line of adjoining property that cannot be built upon and from other underground
services; and
(b) 10 ft (3 m) from a line of adjoining property that can be built upon and from another underground
tank.
Table 7.3
Underground tanks
(See Clause 7.8.11.)
Location
Minimum distance between top of tank and grade, in (mm)
Nontraffic area
One of the following:
(a) 14 (350) soil cover; or
(b) 12 (300) soil cover plus 4 (100) concrete cover for a total cover
of 16 (400)
Traffic area
One of the following:
(a) 36 (900) soil cover;
(b) 18 (450) soil cover plus 6 (150) concrete cover for a total cover
of 24 (600); or
(c) 18 (450) soil cover plus 8 (200) asphaltic cover for a total cover
of 26 (650)
7.8.13
Connections to a tank installed underground shall be located within a covered dome, housing, or curb
box. Underground systems shall be installed so that all terminals for connecting filling hoses and any
opening through which there can be flow from a safety relief valve or pressure regulator vent are located
above the normal maximum water table. Terminals for connecting filling hoses, openings for flow from
safety relief valves, and the interior of domes, housings, and curb boxes shall be kept clean of debris and
shall be provided with ventilated louvres or their equivalent.
January 2010
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B149.2-10
7.8.14
A dome, housing, or curb box shall not be larger than necessary for the operation and maintenance of the
valves and fittings and shall not be more than 3 ft (1 m) in depth.
7.8.15
A tank that has been used underground shall not be installed above-ground without inspection and
testing to ensure compliance with the requirements for an above-ground tank.
7.8.16
When an underground tank is to be taken out of service,
(a) as much liquid propane as possible shall be removed through the tank liquid withdrawal connection;
(b) as much of the remaining propane vapour as possible shall be removed by means of a compressor or
flaring, or both;
(c) the tank shall be purged with an inert gas to remove the remaining propane vapour; and
(d) the tank and piping shall be removed.
7.8.17
An underground storage tank shall not be filled in excess of 90% of the filling capacity.
Δ
7.9 Discharge from tank relief valves
7.9.1
The discharge from any relief valve of a tank, except that of a tank located on a vehicle, shall not
terminate in any building.
7.9.2
On a underground tank with a capacity greater than 2000 USWG (7500 L), the discharge of a safety relief
valve shall be piped vertically upward to a point at least 7 ft (2.1 m) above the ground and all
underground tanks used in dispensing stations shall be piped vertically upward to a point at least 10 ft
(3.0 m) above the ground.
7.9.3
On a tank of 125 USWG (475 L) capacity or less, the discharge from a relief valve shall be located not less
than 3 ft (1 m) horizontally from any opening into a building below the level of such discharge.
7.9.4
On a tank with a capacity greater than 125 USWG (475 L), the discharge from a relief valve shall be
vented vertically upwards and shall be unobstructed to the outdoors in such a manner as to prevent any
impingement of propane upon any tank. A loose-fitting rain cap shall be used.
7.10 Location of consumer tanks
7.10.1
Except as permitted in Clause 10.2 of this Code and Clause 5.14.1 of CSA B149.5, every tank shall be
located outside of a building.
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January 2010
7.10.2
A tank used in a consumer application shall be located with respect to a property line, building opening,
or an adjacent tank in accordance with Table 7.4. A tank shall be located with respect to a building wall
in accordance with Table 7.4, except that
(a) a maximum of four tanks, each less than 125 USWG (475 L), that are manifolded together to form a
system may be located against a common wall of a building. Not more than one such manifold
system may be located against a common wall of a building unless separated by a distance of
10 ft (3 m);
(b) for aggregate capacities over 125 USWG (475 L) and up to and including 500 USWG (1900 L), the
clearance from building walls may be reduced to 3 ft (1 m) for a single tank, provided that
(i) the building wall is of concrete or masonry construction;
(ii) there is a minimum of 10 ft (3 m) to the nearest building opening; and
(iii) the tank is used only for vapour service; and
(c) for aggregate capacities over 125 USWG (475 L) and up to and including 5000 USWG (19 000 L), the
clearances from building walls of other than concrete or masonry construction may be reduced to
the clearances specified for concrete or masonry wall construction if protection acceptable to the
authority having jurisdiction is provided.
7.11 Tank supports
7.11.1
Secure anchorage or sufficient pier height shall be provided for each tank to prevent flotation wherever
high flood water can occur.
7.11.2
A horizontal tank with a capacity of 2000 USWG (7500 L) or less shall
(a) be mounted on a maximum of two supports, and these supports shall be of noncombustible material
in the form of piers, pads, saddles, blocks, steel beam skid rails, or concrete, each of sufficient
strength to support the weight of the tank when filled to capacity with propane;
(b) not be installed with an individual block or pad at each leg of the tank;
(c) have the top of any support not less than 3 in (75 mm) above grade, and the clearances between the
bottom of the tank and grade shall not be less than 6 in (150 mm); and
(d) be installed with a maximum distance of 30 in (750 mm) between the bottom of the tank and a
concrete pad, slab, or grade.
7.11.3
A vertical tank of 125 USWG or less shall be installed in accordance with Clause 6.7.1 of this Code.
A vertical tank greater than 125 USWG capacity shall be secured to a reinforced concrete base that
(a) extends at least 1 ft (300 mm) from all sides of the tank surface of the pad and shall be above grade
level;
(b) has been designed to have a maximum bearing pressure on the soil of 2000 lb/ft2 (95 kPa);
(c) limits the distance between the bottom of the tank and the concrete pad to a maximum of 30 in
(750 mm); and
(d) is subject to the approval of the authority having jurisdiction.
7.11.4
Horizontal tanks with a capacity greater than 2000 USWG (7500 L) shall
(a) be mounted on not more than two concrete saddles or piers;
(b) have footings located below the frost line that are designed for a maximum bearing pressure on the
soil of not more than 2000 lb/ft2 (95 kPa);
(c) have corrosion protection provided on that portion of the tank in contact with concrete piers or
saddles; and
(d) have a space of not less than 24 in (600 mm) between the underside of the tank and the grade level.
January 2010
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B149.2-10
Table 7.4
Location of above-ground tanks for consumer applications limited
to vapour withdrawal and/or liquid withdrawal to a vaporizer
(See Clauses 7.10.2 and 9.3.2.)
Total aggregate water
capacity, USWG (L)
Minimum distance,
ft (m), between tank
and property line;
adjacent concrete
or masonry building
wall with no building
openings within the
specified clearances;
or source of ignition*
Minimum
distance, ft (m),
between tank
and building
wall of other
than concrete
or masonry
construction
Up to and including 125 (475)
None‡
None
3 (1)
None
Over 125 (475) up to and
including 1000 (3800)
10 (3)
10 (3)
10 (3)
3 (1)
including 2000 (7800)
10 (3)
25 (7.5)
25 (7.5)
3 (1)
including 5000 (19 000)
15 (5)
25 (7.5)
25 (7.5)
3 (1)
Over 5000 (19 000) up to and
including 10 000 (38 000)
25 (7.5)
25 (7.5)
25 (7.5)
3 (1)
Over 10 000 (38 000)
§
§
Minimum
distance, ft (m),
between tank
and building
opening
§
Minimum
distance, ft (m),
between tank
and adjacent
tank†
§
*Distances to property lines may be amended by the authority having jurisdiction.
†If tanks of a multiple tank installation are installed on a common base or pier, the clearances may be reduced at the
discretion of the authority having jurisdiction.
‡10 ft (3 m) from any source of ignition.
§At the discretion of the authority having jurisdiction.
7.11.5
Notwithstanding the requirements in Clause 7.11.4, horizontal tanks with a capacity greater than
2000 USWG (7500 L) may be mounted on a skid frame, provided that
(a) the skid frame assembly is designed to accommodate anticipated loads;
(b) the skid frame assembly is installed on a concrete slab, foundation, or compacted base designed to
accommodate static and dynamic loads imposed by the tank and skid frame; and
(c) steps are taken to allow for differential movement between any fixed piping and the skid frame
assembly.
7.12 Filling plants and refill centres
7.12.1
Lighting shall be provided to illuminate the tank area, including control valves and other equipment,
when loading or unloading is done during other than daylight hours.
7.12.2
Means of access for firefighting, using a fire extinguisher or fire department apparatus, shall be provided
to the storage tank areas or buildings.
44
January 2010
7.12.3
Prominently displayed “NO SMOKING”* signs or symbols shall be installed at all entrances and points of
propane transfer. Lettering shall be a minimum of 4 in (100 mm) high and shall be red on a white
background. Symbols shall be a minimum of 7-1/2 in (300 mm) in diameter.
7.12.4
A tank and its equipment shall be located not less than 25 ft (7.5 m) from any drain, sewer, or pit unless
the pit is equipped with an automatic flammable vapour leak detection system.
7.12.5
A tank shall not be installed above another tank.
7.12.6
In heavily populated or congested areas, the authority having jurisdiction may determine restrictions of
individual tank capacity, total storage, distance to line of adjoining property, and other requirements.
7.12.7
A container filling or storage building shall not contain a heating plant or any source of ignition and shall
not be heated except by indirect means.
7.12.8
A transfer hose used for loading or unloading a storage tank shall be disconnected from a cargo liner,
tank truck, or tank car immediately after transfer operations have been completed. A cargo liner, tank
truck, or tank car shall have all transfer hoses disconnected if an attendant is not present.
7.12.9
Transfer valves and the electrical system controlling the pumping equipment shall be turned off when
not in use.
7.12.10
A sign shall be prominently displayed on or adjacent to a tank and visible from the filling location, and
shall be worded as follows: “NO SMOKING — TURN OFF ALL SOURCES OF IGNITION”* (in lettering that
is a minimum of 2 in (50 mm) high) and “TRANSPORT CYLINDERS SECURED IN AN UPRIGHT POSITION
IN A VENTILATED SPACE”† (in lettering that is a minimum of 1 in (25 mm) high).
*The equivalent French wording is “DÉFENSE DE FUMER — COUPER TOUTES LES SOURCES D’ALLUMAGE”.
†The equivalent French wording is “LORS DU TRANSPORT, FIXER SOLIDEMENT LES BOUTEILLES EN POSITION VERTICALE
DANS UN ENDROIT AÉRÉ”.
Lettering shall be red on a white background.
7.12.11
A sign shall be prominently displayed on or adjacent to a tank and visible from the filling location,
and shall be worded as follows: “IT IS AN OFFENCE TO FILL PROPANE CYLINDERS AND MOTOR FUEL
CONTAINERS IN EXCESS OF 80% CAPACITY BY VOLUME”*.
*The equivalent French wording is “IL EST INTERDIT DE REMPLIR LES BOUTEILLES DE PROPANE ET LES RÉCIPIENTS DE
CARBURANT POUR MOTEURS À UNE CAPACITÉ DÉPASSANT 80 % DE LEUR CAPACITÉ TOTALE EN VOLUME”.
Lettering shall be a minimum of 1 in (25 mm) high and shall be red on a white background.
7.12.12
There shall be provision in the design of the installation of the tank and pumping equipment to permit
differential movement.
January 2010
45
B149.2-10
7.12.13
The liquid withdrawal opening shall be equipped with an internal safety control valve or an internal
excess-flow valve with a remotely operated valve of the emergency shut-off type installed within 6 in
(150 mm) of the excess-flow valve.
7.13 Electrical equipment at filling plants
Electrical wiring, equipment, and fixtures at filling plants (bulk plants) shall be classified according to
Table 7.6.
7.14 Storage of containers at filling plants
7.14.1
A cylinder may be stored in a container filling and storage building that meets the requirements of
Clause 7.17.3.
7.14.2
When stored outdoors, a container shall be inside the fenced area of a filling plant and shall
(a) be stored 25 ft (7.5 m) or more from the property line;
(b) be kept clear of means of access to any storage tank, container storage area, or building;
(c) be stored not less than 4 ft (1 m) from the fence when the fence has openings greater than
2 × 2 in (50 × 50 mm), but may be stored alongside a fence when the fence has openings
2 × 2 in (50 × 50 mm) or smaller; and
(d) not be stored within 25 ft (7.5 m) of the filling plant storage tank.
7.15 Fencing of filling plants
A filling plant shall be enclosed with a fence constructed in accordance with Clauses 6.5.2.2 and 6.5.2.3.
At least two gates through the fencing shall be provided, and the fence shall enclose and be located not
less than 10 ft (3 m) from
(a) a container filling room or container filling location;
(b) any loading and unloading outlet for a cargo liner or tank truck;
(c) any pump or compressor; and
(d) any filling plant storage tank.
7.16 Location of tanks at filling plants and container refill centres
A tank shall be located in accordance with Table 7.5.
7.17 Container filling locations with provisions for container storage
7.17.1
Container filling locations with provisions for container storage shall be located not less than
(a) 10 ft (3 m) from any tank;
(b) 25 ft (7.5 m) from the line of adjoining property; and
(c) 25 ft (7.5 m) from any source of ignition.
7.17.2
A pump and compressor may be located in a container filling room(s) or building(s), provided that these
rooms or buildings are located in accordance with Clause 7.17.1 and constructed in accordance with
Clause 7.17.3.
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January 2010
Δ
Table 7.5
Location of tanks at filling plants and container refill centres
(See Clauses 7.16 and 7.19.1.1.)
Minimum distance,
ft (m), between tank
and property line;
adjacent concrete or
masonry building
wall with no building
openings or windows
within the specified
clearances; or source
of ignition
Minimum distance,
ft (m), between
tank and building
openings,
windows, or
building wall other
than concrete or
masonry
Minimum
distance, ft (m),
between tank
and adjacent
tank*
Up to and including
2000 (7500)
10 (3)
25 (7.5)
3 (1)
25 (7.5)
Over 2000 (7500)
up to and including
5000 (19 000)
15 (5)‡
25 (7.5)
3 (1)
100 (30)
Over 5000 (19 000)
up to and including
10 000 (38 000)
25 (7.5)‡
25 (7.5)
3 (1)
100 (30)
Over 10 000 (38 000)
50 (15)‡
50 (15)
5 (2)
100 (30)
Total water capacity
of tanks, USWG (L)
Minimum
distance, ft (m),
between tank and
near side of main
rail line†
*If tanks of a multiple tank installation are installed on a common base or pier, the clearance may be reduced at the
discretion of the authority having jurisdiction.
†Where applicable, the requirements of Clause 7.18.2 shall apply.
‡These distances are subject to the prior approval of the authority having jurisdiction, which may amend the spacing
requirement.
Note: A building does not include a container filling or storage building, a pump room, or a building housing an indirect
vaporizer.
7.17.3
A container filling or storage building or a building containing a pump and compressor shall
(a) be built of or covered with noncombustible materials, except that rafters, floor, and studs that are
exposed to the interior may be of wood;
(b) be ventilated with openings to the outside air in at least two walls, exclusive of doors, at floor level
and at or near the ceiling. Each opening shall have an opening to floor area ratio of not less than
1:600. These ventilation openings shall be not less than 10 ft (3 m) horizontally from any air intake
of any appliance or air-moving equipment or any other opening into any building;
(c) have floor at or above grade. Any space below a floor shall be well ventilated and kept free of
combustible material or the space shall be filled in with tamped earth;
(d) have two or more exits when the travel distance to an exit is more than 15 ft (4.5 m) (additional exits
shall be provided when the distance between exits in the same wall is more than 75 ft (22.5 m)), and
(i) exit doors shall swing to open outward; and
(ii) any latch on an exit door shall be only of the magnetic or friction type; and
(e) have explosion relieving to the outdoors of not less than 1 ft2 (0.1 m2) for each 50 ft3 (1.4 m3) of
building volume. The type of explosion relief venting shall be one of the following:
(i) an open area;
(ii) an outwardly opening sash;
(iii) an explosion-relief panel; or
(iv) single-strength glass.
January 2010
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B149.2-10
7.17.4
Except at container refill centres, a tank truck or cargo liner transfer connection shall be located not
less than
(a) 25 ft (7.5 m) from the line of adjoining property and any source of ignition;
(b) 10 ft (3 m) from any pump or compressor if housed in one or more separate buildings;
(c) 10 ft (3 m) from any storage tank; and
(d) 10 ft (3 m) from a container filling building.
7.18 Filling plants served by rail
7.18.1
When a distribution location or filling plant is located on private property but served by rail, the
requirements of Clause 7.16 shall apply in conjunction with the TC requirements for the siding and
unloading tower.
7.18.2
When a distributing location or filling plant is located on railway property, TC requirements shall apply.
7.19 Container refill centres
7.19.1 General
7.19.1.1
A tank shall be located in accordance with Table 7.5.
7.19.1.2
A container refill centre shall meet the requirements of Clauses 6.5.1 and 6.5.2 if it is used for the storage
of containers.
7.19.1.3
The aggregate capacity of tanks installed in accordance with Clause 7.19 shall not exceed 5000 USWG
(19 000 L).
7.19.1.4
A ventilated cabinet, an enclosure, or fencing used in conjunction with a tank shall be locked when
unattended.
7.19.1.5
A service valve normally located under the dome of a tank shall
(a) have the outlet opening plugged unless it is to be used
(i) for vapour withdrawal service; or
(ii) as a connection for the pump bypass piping; and
(b) not be used for both vapour withdrawal service and as a connection for the pump bypass piping
at the same time.
7.19.1.6
At least one portable fire extinguisher of not less than 20-B, C rating shall be installed in a readily
accessible location at a container refill centre.
48
January 2010
7.19.1.7
A container refill centre shall be equipped with a clearly identified and readily accessible means to shut
off the propane system and electrical power to the propane pump and dispenser during an emergency.
7.19.1.8
A motor fuel dispenser shall incorporate a manual (deadman) flow control that shuts off the propane
supply when the control is released.
7.19.1.9
A kiosk doorway shall not be located within 10 ft (3 m) of any point of transfer it faces.
7.19.2 Fencing of container refill centres
When protection for the primary valves and other transfer equipment of a tank is not provided by a
cabinet or enclosure constructed in accordance with Clause 7.19.3, the tank shall be enclosed by fencing,
constructed in accordance with Clause 6.5.2.2 or 6.5.2.3, which shall be located not less than 3.5 ft (1 m)
from any point on the tank.
7.19.3 Ventilated cabinets or enclosures
When a tank is used in conjunction with a ventilated cabinet or enclosure housing dispensing equipment,
(a) only its relief valves, gauging device, Schedule 80 bypass pipe, and filler valve shall be permitted to
be located outside of the cabinet or enclosure; and
(b) the manually operated internal safety control valve shall incorporate a means to prevent closure of
the cabinet door when the valve is open, except that an alternative means of shut-off may be used
that ensures the internal safety control valve remains closed unless the dispenser is activated.
7.19.4 Protection against vehicular traffic (See Annex B)
7.19.4.1
Posts used for the protection of a tank shall
(a) be spaced not more than 54 in (1350 mm) apart;
(b) be buried not less than 36 in (900 mm) below grade;
(c) extend at least 30 in (750 mm) above grade; and
(d) be one of the following:
(i) 4 in (100 mm) capped steel pipe;
(ii) 4 in (100 mm) tubing filled with concrete;
(iii) 8 in (200 mm) pressure-treated wood, either square or round; or
(iv) 6 in (150 mm) minimum dimension reinforced concrete.
Δ
7.19.4.2
Guardrails used for the protection of a tank shall be
(a) of the steel deep beam type, 12 × 162 in (300 × 4050 mm), supported by 6 in (150 mm) minimum
pressure-treated wooden posts buried not less than 36 in (900 mm) below grade and located not
more than 75 in (1875 mm) apart, centre to centre, and the bottom of the beam shall be 18 in
(450 mm) above grade; or
(b) of the reinforced concrete barrier type, commonly referred to as the New Jersey Turnpike barrier, not
less than 30 in (750 mm) in height, with a width of base not less than the height. See Figure E.1 in
Annex E for an illustration of a typical barrier.
January 2010
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B149.2-10
7.19.4.3
Posts or guardrails used for the protection of a tank shall be located
(a) not less than 3.5 ft (1 m) from all sides of the tank, ventilated cabinet, or enclosure; and
(b) to ensure that a minimum of 3.5 ft (1 m) will be maintained between the point of transfer or
cylinder-filling scale and any source of ignition, including vehicles.
7.19.5 Electrical equipment
Electrical wiring, equipment, and fixtures located at a storage tank, filling building or area, pump,
compressor, point of transfer, or similar location shall be classified according to Table 7.6.
7.20 Dispensing devices
7.20.1
A propane dispensing device shall be located at least
(a) 10 ft (3 m) from
(i) a property line;
(ii) a drainage basin or ditch;
(iii) any fuel dispenser, other than a propane dispenser; and
(iv) any noncombustible building wall; and
(b) 25 ft (7.5 m) from a combustible building wall unless approved fire protection is provided.
7.20.2
A remote dispensing device shall be protected from damage with the use of posts
(a) as stipulated in Clause 7.19.4.1, Items (b) to (d); and
(b) located to provide a minimum of
(i) 1 ft (300 mm) of clear space between the posts and the dispenser; and
(ii) 3.5 ft (1 m) of clear space between the posts and an island dispenser that incorporates a
cylinder filling scale.
When purging equipment is provided, a vent pipe shall be installed to discharge the vapours to an
ignition-free location at least 10 ft (3.5 m) from the dispenser.
Note: Vehicles are not normally considered a source of ignition within the dispensing zone, provided that the engine and
any source of ignition is turned off before and during the refuelling. The person who is filling or purging any propane
container is responsible for ensuring that there is no source of ignition within 10 ft (3.5 m) measured horizontally.
7.20.3
A piping system, located below grade, from a tank to a remote dispensing device shall be installed
(a) underground in accordance with the provisions of Clause 6.15 of CSA B149.1; or
(b) in a trough as shown in Figure C.1 of Annex C. Piping used in the concrete trough shall be protected
from corrosion and comply with the requirements of Clause 6 of CSA B149.1, with the exception of
Clause 6.15.
7.20.4
Except as specified in Clause 7.19.3(b), and except when the dispensing device is activated, the internal
safety control valve serving a motor fuel dispensing device shall remain closed. Other means of shutting
off the fuel system shall be used on the piping system serving the motor fuel dispensing device when
closure of the internal safety control valve can interrupt other services.
50
January 2010
Table 7.6
Electrical classification
(See Clauses 6.5.1.12, 6.5.1.13, 7.13, 7.19.5, and 8.16.1 and Figure G.1.)
Rating of equipment
according to the
Canadian Electrical
Code, Part I, Class I,
Group D†
Part
Location
Extent of classified area*
A
Storage containers other than
cylinders and ASME vertical
containers of less than 1000 lb
(454 kg) water capacity
Within 15 ft (4.5 m) in all directions from
connections, except connections otherwise
covered in this Table
Division 2
B
Tank vehicle and tank car loading
and unloading‡
Within 10 ft (3 m) in all directions from
connections regularly made or disconnected
for product transfer
Division 1
Beyond 10 ft (3 m) but within 25 ft (7.5 m) in
all directions from a point where connections
are regularly made or disconnected and within
the cylindrical volume between the horizontal
equator of the sphere and grade
Division 2
Within 5 ft (1.5 m) in all directions from point
of discharge
Division 1
Beyond 5 ft (1.5 m) but within 15 ft (4.5 m) in
all directions from point of discharge
Division 2
Within the direct path of discharge
Division 1
Note: Fixed electrical
equipment should
preferably not be
installed.
Within 5 ft (1.5 m) in all directions from point
of discharge
Division 1
Beyond 5 ft (1.5 m) but within 15 ft (4.5 m) in
all directions from point of discharge except
within the direct path of discharge
Division 2
C
D
Gauge vent openings other than
those on cylinders and ASME
vertical containers of less than
1000 lb (454 kg) water capacity
Relief device discharge other
than those on cylinders and
ASME vertical containers of less
than 1000 lb (454 kg) water
capacity
(Continued)
January 2010
51
B149.2-10
Table 7.6 (Continued)
Part
Location
E
Pumps, vapour compressors,
gas/air mixers, and vaporizers
(other than direct-fired or
indirect-fired with an attached
or adjacent gas-fired heat
source) in one of the following
conditions:
(a) indoors without ventilation;
F
Rating of equipment
according to the
Canadian Electrical
Group D†
Entire room and any adjacent room not
separated by a gas-tight partition
Division 1
Within 15 ft (4.5 m) of the exterior side of any
exterior wall or roof that is not vapour-tight or
within 15 ft (4.5 m) of any exterior opening
Division 2
(b) indoors with adequate
ventilation§; or
Division 2
(c) outdoors in open air at or
above grade.
Within 15 ft (4.5 m) in all directions from this
equipment and within the cylindrical volume
between the horizontal equator of the sphere
and grade
Division 2
Service station dispensing units
Entire space within dispenser enclosure, or up
to a solid partition within the enclosure at any
height above the base; the space within 18 in
(450 mm) horizontally from the dispenser
enclosure up to 4 ft (1.2 m) above the base
or to the height of a solid partition within the
enclosure; entire pit or open space beneath
the dispenser
Division 1
The space above a solid partition within the
dispenser enclosure; the space up to 18 in
(450 mm) above grade within 20 ft (6 m)
horizontally from any edge of the dispenser
enclosure§
Division 2
(Continued)
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January 2010
Table 7.6 (Continued)
Part
Location
G
Pits or trenches containing,
or located beneath, LP-gas
valves, pumps, vapour
compressors, regulators,
and similar equipment
(a) without mechanical
ventilation; or
(b) with adequate mechanical
ventilation.
Rating of equipment
according to the
Canadian Electrical
Group D†
Entire pit or trench
Division 1
Division 2
pit or trench when located outdoors
Division 2
Entire pit or trench
Division 2
Division 2
pit or trench when located outdoors
Division 2
H
Special buildings or rooms for
storage of portable containers
Entire room
Division 2
I
Pipelines and connections
containing operational bleeds,
drips, vents, or drains
point of discharge
Division 1
Beyond 5 ft (1.5 m) from point of discharge
(extent of classified areas characterized as
they are in Part E)
As shown in Part E,
as applicable
connections regularly made or disconnected
for product transfer
Division 1
Beyond 5 ft (1.5 m) and entire room
Division 2
Within 5 ft (1.5 m) in all directions from the
dispensing hose inlet connections for product
transfer
Division 1
J
Container filling:
(a) indoors with adequate
ventilation§; or
(b) outdoors in open air.
(Continued)
January 2010
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Table 7.6 (Concluded)
Part
Location
K
Outdoor cylinder storage:
aggregate storage of propane
Rating of equipment
according to the
Canadian Electrical
Group D†
(a) up to and including 1000 lb
(454 kg) water capacity; or
connections
Division 2
(b) greater than 1000 lb
(454 kg) water capacity.
connections
Division 2
*The classified area shall not extend beyond an unpierced wall, roof, or solid vapour-tight partitions.
†See the Canadian Electrical Code, Part I, for definitions of classes, groups, and divisions.
‡When classifying the extent of the hazardous area, consideration shall be given to possible variations in the spotting
of tank cars and tank vehicles at the unloading points and the effect these variations of actual spotting point may have
on the point of connection.
§Where specified for the prevention of fire or explosion during normal operation, ventilation is considered adequate where
provided in accordance with the provisions of this Code.
7.20.5
Refuelling and emergency instructions shall be posted at the dispensing island or filling location of a
card/key lock or fleet vehicle refueling location.
7.20.6
At least one sign shall be provided at each propane motor fuel dispensing island or location. The sign shall
(a) be no smaller than 8-1/2 × 11 in (215 × 280 mm);
(b) bear
(i) the words “NO SMOKING WITHIN 3 M — TURN IGNITION OFF BEFORE REFUELLING”* in black
letters not less than 1 in (25 mm) in height on a yellow background; or
(ii) the international “NO SMOKING” and “IGNITION OFF” symbols, using symbols at least 4 in
(100 mm) in diameter in red and black on a white background; and
(c) be visible to all drivers as they approach the dispensing island or location.
*The equivalent French wording is “DÉFENSE DE FUMER DANS UN RAYON DE 3 M — COUPER LE MOTEUR PENDANT LE
REMPLISSAGE”.
7.20.7
A remote dispensing device shall be located outdoors and may be located under an overhead canopy for
weather protection.
7.20.8
A dispensing device shall not be supported by piping, tubing, or other connected equipment, and shall be
(a) anchored on an independent concrete foundation; or
(b) mounted on a common base as part of a complete storage and dispensing unit.
7.20.9
The vehicle refueling dispenser hose shall be equipped with a breakaway quick-closing coupling (of a type
that closes in both directions when uncoupled) to minimize the escape of propane from the uncoupled
components in the event that the breakaway coupling becomes accidentally uncoupled. The maximum
tensile force necessary to effect breakaway shall be 88 lbf (391 N) in any horizontal direction.
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January 2010
7.20.10
Product supply piping to a dispensing device shall be installed in accordance with the requirements of
Clause 6 of CSA B149.1 and shall
(a) have its discharge pressure limited to the working pressure of the dispenser;
(b) contain a shut-off valve upstream of the dispenser to permit the dispenser to be removed temporarily
if necessary; and
(c) contain an excess-flow valve at the inlet to the dispenser.
7.20.11
Vapour return piping from a dispenser to a storage tank shall be equipped with an excess-flow valve.
This valve and the valve specified in Clause 7.20.10(c) shall be anchored to the dispenser foundation,
independent of the dispenser frame.
7.21 Movement of tanks not designed for transportation or delivery of
propane
7.21.1
Tanks shall be transported in accordance with the requirements of the TDG Regulations of Transport
Canada. Requirements for the transportation of tanks not intended for transport and containing not more
than 5% capacity are prescribed in CSA B622 and the TDG Regulations of Transport Canada.
7.21.2
The lifting lugs on a tank shall not be used as the means of lifting a tank containing propane in excess
of 5% of its water capacity.
8 Tank trucks, tank trailers, and cargo liners
Δ
8.1 General
8.1.1
All tank trucks, tank trailers, and cargo liners shall be designed, fabricated, and marked in accordance
with the requirements of CSA B620.
8.1.2
Propane equipment on a tank and its related piping shall be maintained in good working order and kept
free of leaks at all times.
8.1.3
Propane offered for transport, and transported, shall comply with the Transportation of Dangerous Goods
Regulations of Transport Canada.
Δ
8.2 Tank equipment on tank trucks, tank trailers, and cargo liners
8.2.1
Except for relief valve and liquid-level gauge openings in a tank, the filling and vapour equalizing
connections shall be equipped with at least one of the following:
(a) a combination of a single back check valve and an excess-flow valve;
(b) a double back check valve, one seat of which shall be of the metal-to-composition type;
(c) an internal excess-flow valve and a shut-off valve;
(d) an internal back check valve and a shut-off valve; or
(e) an internal valve.
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8.2.2
Relief valves shall be inspected and replaced in accordance with CSA B620.
8.3 Pumps and compressors on tank trucks and cargo liners
8.3.1
Pumps and compressors shall be protected from damage and may be
(a) mounted upon a tank truck or cargo liner; and
(b) operated by using the truck power take-off unit, an internal combustion engine with a shielded
ignition system, or devices operated by hand or by mechanical, hydraulic, or electrical means.
8.3.2
A pump installed on a tank truck or cargo liner shall be equipped with an automatic bypass valve or
an internal pump relief valve that limits the differential pressure between the inlet and outlet.
Δ
8.4 Piping, tubing, hose, and fittings on tank trucks, tank trailers,
and cargo liners
A piping or hose fitting used for loading or unloading propane shall be provided with a manual valve
for relieving pressure before the hose is disconnected, unless the valve is designed to limit the escape
of propane released when disconnecting to 1/500 gal (10 mL).
8.5 Electrical equipment and lighting on tank trucks, tank trailers,
and cargo liners
8.5.1
A tank truck, tank trailer, or cargo liner shall not be equipped with illumination other than that from
an electric source. Lighting circuits shall have overcurrent protection, and the wiring shall have sufficient
current-carrying capacity to accommodate the electrical load. The wiring shall be secured, grommetted,
and protected against damage.
8.5.2
Electric motors, wiring, equipment, and fixtures enclosed in the cabinet shall conform with the provincial
or territorial electrical code or the Canadian Electrical Code, Part I, for Class I, Division 2, Group D hazardous
locations.
8.6 Braking systems and chock blocks
8.6.1
A tank truck or a cargo liner shall be equipped with
(a) a fail-safe braking system that is interlocked with the pump power take-off; or
(b) chock blocks that shall be chained permanently to the vehicle for use at the rear wheels.
8.6.2
At least one of the methods of braking specified in Clause 8.6.1 shall be used when the vehicle is parked
during loading or unloading.
8.6.3
Every tank trailer shall be equipped with a reliable system of brakes, and provisions shall be made for its
efficient operation from the driver’s seat of the vehicle towing the trailer.
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January 2010
8.7 Exhaust systems
The truck engine exhaust shall be directed to the outside of the frame and skirting, away from the fuel
system, combustible materials, and any tank, valve, pump, or piping.
8.8 Engine fuel
When propane is used in a truck engine, the fuel system shall be installed in accordance with CSA B149.5.
8.9 Fire extinguishers
Every tank truck and cargo liner shall be provided with at least one portable dry chemical fire
extinguisher of not less than 20-B, C rating, and where more than one fire extinguisher is provided, each
additional extinguisher shall have not less than a 5-B, C rating.
8.10 Tank truck and cargo liner lettering
8.10.1
Every tank truck and cargo liner shall be marked legibly and conspicuously on both sides and on the rear,
in letters not less than 4 in (100 mm) high and in a colour that contrasts sharply with the background,
with at least one of the following:
(a) the words “COMPRESSED LP GAS”*;
(b) the word “FLAMMABLE”†;
(c) the word “PROPANE”‡; or
(d) the name of the carrier if the name includes the word “PROPANE”‡.
*The equivalent French wording is “GAZ PL COMPRIMÉ”.
†The equivalent French wording is “INFLAMMABLE”.
‡The equivalent French wording is “PROPANE”.
8.10.2
Every tank truck or cargo liner shall bear the tank serial number
(a) on a permanent metal plate; or
(b) painted in legible letters not less than 1 in (25 mm) high on a background of a contrasting colour.
8.11 Towing tank trailers
8.11.1
Every tank trailer shall be firmly secured by means of draw bars supplemented by safety chains attached
to the vehicle towing the tank trailer.
8.11.2
A 4-wheeled tank trailer shall be of a type that will follow directly in the path of the towing vehicle.
8.12 Filling of tank trucks, tank trailers, and cargo liners
8.12.1
A tank shall be filled in accordance with Clause 7.7.
8.12.2
A tank truck, tank trailer, or cargo liner being filled shall be gauged by weight, by a fixed-liquid-level
gauge, or by a rotary gauge.
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8.12.3
The contents of a tank on a tank truck or cargo liner shall not be transferred to the cargo tank on
another tank truck or cargo liner unless the operation is carried out at a filling plant or at a loading
or unloading facility.
8.12.4
A tank trailer shall not be refilled on a highway.
8.13 Operation of tank trucks, tank trailers, and cargo liners
8.13.1
Vapour and liquid transfer valves shall remain closed except
(a) during transfer operations; and
(b) when used to supply propane for engine fuel purposes as specified in CSA B149.5.
8.13.2
Tank truck, tank trailer, and cargo liner drivers and their assistants shall not smoke and shall do all
within reason to prevent smoking within 10 ft (3 m) of the vehicle.
8.13.3
Portable lights used in connection with the storage and handling of propane shall be suitable for Class I,
Group D hazardous locations.
8.14 Parking vehicles used to transport propane
8.14.1
The requirements of Clause 8.14 shall apply to the parking of vehicles used for the transportation of
propane in a container or by tank truck, tank trailer, or cargo liner.
8.14.2
When parked, a loaded tank truck, tank trailer, or cargo liner shall be positioned so that the relief valve
communicates with the vapour space of the tank.
8.14.3
A vehicle carrying propane and parked outdoors shall comply with the following:
(a) Except in an emergency and as provided in Item (b), a vehicle shall not be left unattended on any
street, highway, parking lot, avenue, or alley. This shall not prevent drivers from absenting themselves
from their vehicles in connection with their normal duties, rest stops, and washroom or meal stops
during the day or night.
(b) A vehicle required to provide emergency delivery of propane may be parked
(i) at a driver’s place of residence, provided that 25 ft (7.5 m) clearance from any other building
is maintained;
(ii) at an alternative location that is at least 25 ft (7.5 m) from any building; or
(iii) at least 50 ft (15 m) from any building used for assembly, care or detention, or multiple
residential occupancy.
8.14.4
Notwithstanding Clause 8.14.3(a) and (b), a tank truck, tank trailer, or cargo liner shall not be parked
in a congested or heavily populated area or within 50 ft (15 m) of a building used for assembly, care, or
detention, or multiple residential occupancy except for the purpose of transferring product.
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January 2010
8.14.5
Subject to Clause 8.14.3, any vehicle used to transport propane and parked at a filling plant, container
refill centre, or a location readily accessible to the public shall be within the confines of a fenced area
constructed in accordance with the requirements of Clause 6.5.2.2 or 6.5.2.3.
8.14.6
The driver shall ensure that all valves and transfer equipment are closed and secured from tampering.
8.15 Vehicles parked in public parking garages
8.15.1
A tank truck, tank trailer, or cargo liner parked in a public parking garage shall have all liquid propane
removed from the tank, piping, pump, meter, hoses, and related equipment, and the vapour pressure in
the transfer hose shall be reduced to atmospheric. All valves shall be closed prior to moving the vehicle
indoors, and the terminal end of the transfer hose shall be plugged, capped, or connected to the vapour
return connection of the tank.
8.15.2
A vehicle carrying containers shall not be parked in a public parking garage until every container has
been removed.
8.16 Vehicles parked in private garages
8.16.1
A vehicle carrying propane may be parked in a private garage, provided that
(a) the public is excluded from such a building;
(b) there is proper ventilation and explosion relief;
(c) all electrical equipment in such a building is in accordance with Part H of Table 7.6;
(d) there is no open flame or other source of ignition in the building;
(e) any leak in the piping system and equipment mounted on the vehicle is repaired prior to moving the
vehicle indoors;
(f) shut-off valves on tanks and other containers on the vehicle are closed and the transfer hose outlets
are plugged, capped, or connected to the vapour return connection to the tank by the driver;
(g) the owner or a person authorized by the owner has gauged the tank truck, tank trailer, or cargo
liner outdoors and is assured that the contents are not in excess of 50% of its maximum permitted
filling density;
(h) the vehicle, when indoors, is not in a location where the temperature of the propane will exceed
100°F (38 °C); and
(i) the garage is located not less than 25 ft (7.5 m) from any property line and any building, other than
a container filling or container storage building, and at least 50 ft (15 m) from any building used
for assembly, care, or detention, or multiple residential occupancy.
8.16.2
A service vehicle carrying cylinders as part of its equipment shall not be parked in any garage other than
a private garage. The total propane capacity of the cylinders shall not exceed 100 lb (45 kg) for each
vehicle.
8.17 Repair or servicing in private garages
The repair or servicing of the engine or chassis of a propane-carrying vehicle in a building shall comply
with Clause 8.16.
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8.18 Repair or servicing in repair garages
8.18.1
When it is necessary to take a vehicle used for transporting propane into a repair garage for major repairs
of the engine or chassis, the requirements of Clause 8.15 shall apply.
8.18.2
When it is necessary to take a vehicle used for transporting propane into a repair garage for minor repairs
or maintenance on the engine or chassis, including the washing of the cab, chassis, and tank, the driver of
the vehicle shall be in attendance at all times when the vehicle is indoors and shall ensure that
(a) any propane leak is repaired or the requirements of Clause 8.15.1 are fulfilled;
(b) all shut-off valves on containers are closed;
(c) before a vehicle is moved indoors, the liquid propane is removed from the piping system, pump,
meter, transfer hose, and related equipment, that the vapour pressure is reduced to atmospheric,
and that the transfer hose outlet is plugged, capped, or connected to the vapour return connection
to the tank;
(d) the contents in a tank are not in excess of 50% of its maximum permitted filling density;
(e) the vehicle, when indoors, is not in a location where the temperature of the propane will exceed
100°F (38 °C);
(f) the vehicle, when indoors, is not located below grade; and
(g) the vehicle is not taken into a repair garage located in a multi-level commercial or industrial
building.
8.18.3
When repair work is to be performed on a tank or tank equipment of a tank truck or cargo liner, all
propane shall be removed from the tank, piping system, and equipment, and the tank, piping system,
and equipment shall be completely purged of any remaining propane, using water or nitrogen gas, prior
to moving the vehicle indoors.
9 Vaporizers
Δ
9.1 General
9.1.1
A vaporizer shall be protected against tampering and damage.
9.1.2
A direct-fired tank heater shall not be used.
9.1.3
A building used to house a vaporizer shall not have a drain to a sewer or sump pit.
9.1.4
A building or room used for propane vaporizing or mixing shall comply with the requirements of
Clause 7.17.3.
9.1.5
Heating or cooling coils shall not be installed inside a container.
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January 2010
9.1.6
A vaporizer shall have a manually operated valve in each connection to a container.
9.1.7
A vaporizer shall not raise the pressure in a container in excess of 215 psig (1500 kPa).
9.1.8
A vaporizer shall be provided with suitable automatic means to prevent propane in the liquid phase from
passing from the vaporizer to the vapour discharge piping.
9.1.9
An open flame or other source of ignition shall not be permitted in a building housing a vaporizer unless
the vaporizer is a direct-fired vaporizer.
9.1.10
Where a direct-fired vaporizer is used on a permanent installation, an effective means of controlling
heavy ends from entering the downstream piping shall be installed.
9.1.11
A vaporizer shall be installed on a firm, level, noncombustible base unless otherwise approved.
9.2 Indirect vaporizers
Δ
9.2.1
An indirect vaporizer classified as a pressure vessel shall be designed, constructed, tested, and marked in
accordance with CSA B51 and the regulations of the boiler and pressure vessel inspection authority of the
province or territory in which it is installed.
9.2.2
An indirect vaporizer with an inside diameter of 6 in (150 mm) or less that is exempted from the
requirements of CSA B51 shall have a design working pressure of not less than 250 psig (1750 kPa) and
need not be permanently marked.
9.2.3
The heating medium piping connected to an indirect vaporizer shall be provided with equipment to
prevent the flow of propane into such piping.
9.2.4
A boiler that provides the heat required for producing steam, hot water, or another heating medium to an
indirect vaporizer shall be located in a place that is separated from any compartment or room containing
an indirect vaporizer, a pump, or propane/air mixing equipment by a fire separation of 2 h fire-resistance
rating of propane-vapour-tight construction. The compartment or room containing the indirect
vaporizer, pump, or propane/air mixing equipment shall be ventilated to the outdoors near the floor line
and the roof.
Δ
9.2.5
An indirect vaporizer shall be installed so as not to interfere with the filling of the container or the
servicing of container components.
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B149.2-10
Δ
9.2.6
An indirect vaporizer that uses electricity for its heating medium shall be provided with a labelled,
accessible disconnect switch with a means of locking the switch in the OFF position.
9.3 Direct-fired vaporizers
9.3.1
Subject to Clause 9.3.4, a direct-fired vaporizer shall not be permitted in a pumphouse, a container
filling or storage room, or in any other building or room.
9.3.2
A direct-fired vaporizer is considered a source of ignition and shall be located at a distance in
accordance with the requirements of Table 7.4 from any tank or from the fill points of any tank, and at
least 25 ft (7.5 m) from a building or property line.
9.3.3
Propane/air mixing equipment located within a building shall be separated from a direct-fired vaporizer
by a fire separation that has a 2 h fire-resistance rating and is of propane-vapour-tight construction.
Δ
9.3.4
A direct-fired vaporizer may be installed in a building used exclusively to house it and its related
equipment, provided that the building is constructed in accordance with Clause 7.17.3, and a sign is
prominently displayed on the exterior of the building at all entrances with the wording “WARNING:
STORAGE OF ANY MATERIALS AND EQUIPMENT IS PROHIBITED”* (in lettering that is a minimum of 2 in
(50 mm) high).
*The equivalent French wording is “AVERTISSEMENT : L’ENTREPOSAGE DE MATÉRIAUX OU D’APPAREILLAGES EST
INTERDIT”.
10 Propane as an engine fuel
10.1 General
10.1.1
Clause 10 shall apply when propane is used as an engine fuel in other than highway vehicles.
10.1.2
The use of propane from a tank mounted on a trailer or a cargo liner to operate a stationary engine
shall be permitted, provided that all loading has been removed from the springs and axle of the propane
tank vehicle.
10.1.3
The engine and any appliance or other equipment providing a source of ignition shall be turned off
before filling operations.
10.1.4
An industrial tractor or lift truck equipped with a permanently mounted container shall be filled outdoors,
remote from a source of ignition, and with the engine turned off.
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January 2010
10.1.5
When an industrial tractor or lift truck is fuelled with propane and is used indoors, the area shall be
ventilated in accordance with the requirements of Table 10.1.
Table 10.1
Mechanical ventilation rate in buildings
(See Clause 10.1.5.)
Truck operating time, h
Continuous mechanical ventilation rate,
cfm per brake horsepower (dm3/s/kW)
Up to 2
100 (63.3)
2 to 3
150 (94.9)
3 to 4
200 (126.5)
4 to 6
250 (158.1)
Over 6
300 (189.8)
Notes:
(1) As an alternative to the above rates, a fan of 300 cfm capacity per brake
horsepower (189.8 dm3/s/kW) shall be acceptable if operated during the period
that the truck is in use.
(2) Mechanical ventilation may not be required in a large building where it is
considered that natural infiltration, based on a maximum of one air change per
hour for the net volume, is equivalent to the requirements of this Table.
10.1.6
It shall be the responsibility of the supplier of an industrial tractor or lift truck to
(a) inform the user of the ventilation requirement of Clause 10.1.5; and
(b) ensure that the tractor or lift truck is in a safe operating condition at the time of delivery to the user.
10.1.7
It shall be the responsibility of the user to remove from service any propane-fuelled industrial tractor or lift
truck where the equipment or container is damaged or malfunctioning.
10.1.8
Any part of the propane carburation equipment that uses a drain valve or plug shall have the drain valve
or plug located in the lowest position.
10.2 Engine fuel containers
10.2.1
New and reconditioned propane containers, as well as propane containers that have had their interiors
exposed to atmosphere (such as would occur during a service valve change), shall be purged of air and
moisture. A procedure for the removal of air and moisture is described in Clause A.4 of Annex A.
10.2.2
A tank for use on a vehicle such as an industrial tractor or lift truck used indoors and a tank located in an
enclosed space on any vehicle shall have a working pressure for the tank and the set pressure of its relief
valve each equal to 312.5 psig (2150 kPa).
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B149.2-10
10.2.3
All inlets and outlets of an engine fuel container, other than those for the relief valve and gauge, shall be
labelled to designate whether the inlet or outlet communicates with the vapour or the liquid space in the
container.
10.2.4
A propane container
(a) on a vehicle shall be so located as to minimize the possibility of damage;
(b) that is mounted near the engine or the exhaust system shall be shielded against heat radiation;
(c) that has a relief valve set pressure equal to 250 psig (1750 kPa) shall not be exposed to temperatures
in excess of 115°F (46 °C); and
(d) that has a relief valve set pressure equal to 312.5 psig (2150 kPa) shall not be exposed to
temperatures in excess of 135°F (57 °C).
10.2.5
A container shall be installed with as much road clearance as practicable but never less than the minimum
road clearance of the vehicle under maximum spring deflection. This minimum clearance shall be measured
from the bottom of the container or from the lowest fitting on the container or housing, whichever is
lower.
10.2.6
A tank on a vehicle shall be permanently installed, and proper anchorage shall be provided to prevent it
from jarring loose, slipping, or rotating.
10.2.7
A cylinder shall be firmly secured to the vehicle.
10.2.8
Field welding, where necessary, shall be made only on the saddle plates, lugs, or brackets originally
attached to the container by the manufacturer.
10.2.9
A container from which vapour only is to be withdrawn shall be installed or equipped in such a manner
as to prevent the accidental withdrawal of liquid propane.
10.3 Engine fuel piping, tubing, hose, and fittings
10.3.1
Except as permitted in Clause 10, piping, tubing, hose, and fittings shall comply with CSA B149.5.
10.3.2
With a removable container, a quick-disconnect coupling shall be used between the container and
flexible connector.
10.3.3
Piping shall be installed, braced, and supported so as to reduce vibration, strain, or wear to a minimum,
and shall be protected from damage by its location or by other means.
10.3.4
Liquid propane piping or tubing shall have a greater capacity than the rated flow of the container
excess-flow valve.
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January 2010
10.4 Engine fuel container equipment
10.4.1
Each filling connection for an engine fuel container shall be fitted with a double back check valve or
a positive shut-off valve in conjunction with an internal back check valve. On a removable container,
the filler valve may be a hand-operated shut-off valve with an internal excess-flow valve. The main
shut-off valves on the container liquid and vapour lines shall be readily accessible.
10.4.2
A propane withdrawal connection on a container that has an opening larger than a No. 54 drill size
(1.4 mm) shall be equipped with an excess-flow valve.
10.4.3
All valves and connections on a container shall be protected to prevent damage due to accidental contact
with stationary objects or from loose objects thrown up from the road, and all valves shall be safeguarded
against damage due to collision, overturning, or other accidents. Where parts of the vehicle provide
protection to valves and fittings, the foregoing requirements shall be considered fulfilled. On a removable
cylinder, the protection for the equipment shall be provided by the permanently attached collar on
the cylinder.
10.4.4
A container shall be filled by weight or volume in accordance with Clause 6.4.2 or 7.7.1.
10.4.5
A variable-liquid-level gauge that requires the bleeding of propane to the atmosphere shall not be used
on a container on an industrial tractor or lift truck used indoors.
10.4.6
A permanently mounted tank shall be equipped with a fixed-liquid-level gauge.
10.4.7
A spring-loaded internal-type relief valve shall be used on each tank.
10.4.8
The discharge from a relief valve shall be made to the outside of any enclosed space, as far as practicable
from possible sources of ignition, and in such a manner as to prevent impingement of propane upon a
container or vehicle. A rain cap or other means of protection shall be used.
10.5 Hydrostatic relief valves
10.5.1
A hydrostatic relief valve shall be installed between each pair of shut-off valves on liquid propane piping,
tubing, or hose.
10.5.2
A discharge outlet of a hydrostatic relief valve shall be in accordance with Clause 10.4.8.
10.6 Engine fuel vaporizers (converters)
10.6.1
An engine fuel vaporizer shall be securely fastened to the vehicle.
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10.6.2
Exhaust gas shall not pass through any vaporizer unless the vaporizer is designed for exhaust gas
utilization.
10.6.3
A vaporizer shall not be equipped with a fusible plug.
10.7 Engine fuel regulators and valves
10.7.1
An engine fuel regulator shall be installed in a secure manner.
10.7.2
A propane-fired engine shall be equipped with a valve that will prevent the flow of propane to the
carburetor when the ignition switch is turned off or when the engine is not running. This valve shall be
located upstream of the primary regulator, with both valve and primary regulator acting as part of
the propane conversion equipment. The valve shall be controlled electrically or mechanically by
(a) vacuum from the engine;
(b) oil pressure from the engine; or
(c) centrifugal action.
10.7.3
An atmospheric-type regulator (zero governor) shall be considered acceptable only in cases of outdoor
operation such as a stationary engine installation.
10.8 Servicing and parking indoors
10.8.1
A propane-fuelled vehicle may be parked or serviced indoors, provided that there are no leaks in the
propane system and that the container is not filled beyond its maximum permitted filling density.
10.8.2
A propane-fuelled vehicle under repair indoors shall have any container shut-off valve closed except
when propane is required for engine operation.
10.8.3
A propane container on a vehicle that is parked or being serviced indoors shall not be exposed to
temperatures in excess of 100°F (38 °C).
10.8.4
When the propane system on a vehicle is being serviced indoors, the vehicle shall not be parked within
10 ft (3 m) of an open flame, any source of ignition, or an open pit or drain.
10.8.5
When propane-fuelled ice maintenance equipment is parked indoors over a pit, the space shall be
(a) vented to the outdoors by mechanical means interlocked with a gas detector. The ventilation rate
shall be of a capacity of at least 2 cfm per ft2 (0.61 m3/min per m2) of floor area of the enclosure; and
(b) equipped with a gas detector set to operate at 0.4% propane concentration that has been installed in
accordance with the manufacturer’s installation instructions. The detector shall be interlocked to shut
off any fuel-fired appliances located in the enclosure and shall operate the ventilation fan and
audible and visual alarms.
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10.9 Exchange of engine fuel containers
All removable containers shall be exchanged outdoors or in areas well ventilated to the outdoors and
remote from any source of ignition.
11 Installation of appliances, equipment, and containers
on highway vehicles, recreational vehicles, mobile housing,
outdoor food service units, and wash-mobiles
11.1 General
11.1.1
Clause 11 shall apply to fuel systems other than fuel systems for motive power.
11.1.2
All appliances, equipment, and containers installed
(a) in a mobile home shall comply with the requirements of Clause 11 and of CSA Z240.4.1;
(b) in a recreational vehicle shall comply with the requirements of Clause 11 and of CSA Z240.4.2; and
(c) on a food service unit or wash-mobile shall comply with the requirements of Clause 11.
11.1.3
Two-stage regulating equipment shall be used. Bleed vents on the equipment shall be in a downward
position.
11.1.4
A regulator shall be installed on the vehicle in such a manner that its safe operation will not be impeded
by weather conditions, and it shall be protected by a substantial metal or plastic hood of the enclosed
style.
11.1.5
When provision is made for mounting a cylinder on the A-frame of a vehicle, a rigidly mounted support
bracket for mounting the regulator shall be provided. The regulator shall be protected in accordance with
Clause 11.1.4.
11.1.6
When a vehicle ceases to be used as a mobile home or recreational vehicle and is placed at a location in
a permanently fixed manner, the system shall comply with all applicable requirements of CSA B149.1.
11.1.7
Except for a cylinder with a maximum capacity of 5 lb (3 kg) of propane, a cylinder shall not be installed
or transported in any vehicle unless the installation or transportation conforms with the requirements of
Clauses 6.7 and 11.
11.1.8
An appliance in the application described in Clause 11.1.6 shall not be required to be certified specifically
for use within a mobile home.
11.1.9
Piping from the supply line to the point of connection to a mobile housing structure shall conform to the
requirements of the authority having jurisdiction.
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11.1.10
The engine, appliance, appliance pilot lights, and other equipment on the vehicle that provide a source
of ignition shall be turned off before and during any refuelling of the vehicle.
11.2 Installation of containers
11.2.1
A container located on the exterior of a vehicle shall
(a) not project beyond the side of the vehicle;
(b) not be installed on the roof of the vehicle unless accepted by the authority having jurisdiction;
(c) if installed on the rear of the vehicle, be protected from damage by extending the bumper rearward
beyond the container, using material at least equivalent in strength to the bumper;
(d) not be mounted ahead of the front axle of a self-propelled vehicle;
(e) when located on the A-frame of a vehicle designed to be towed, be mounted as close as possible
to the body of the vehicle; and
(f) not be attached to any door.
11.2.2
Propane piping, tubing, or hose shall not interconnect separate vehicle units.
11.2.3
A container shall be located so that the discharge from the relief valve is
(a) into the open air;
(b) directed away from the vehicle; and
(c) not less than 3 ft (1 m) horizontally from an opening into a vehicle, including combustion air inlets
or flue gas outlets, below the level of such discharge.
11.2.4
A container that is permanently installed in such a manner that it is not removed for refuelling purposes
and is located outside an enclosed space shall be inspected and requalified at five-year intervals, starting
from the date of manufacture, in accordance with the procedures described in, and in compliance with,
Clauses 11.5.17 to 11.5.19.
11.2.5
The maximum number of propane cylinders installed on a food service unit or wash-mobile shall be
three, and the total quantity of propane shall not exceed 300 lb (135 kg).
11.3 Installation of cylinders
11.3.1
A cylinder installed within a vehicle shall be
(a) in a recess that is of metal or metal-clad construction, that is vapour-tight to the inside of the vehicle,
and that is accessible only from, and vented to, the outside;
(b) in a metal cabinet that is vapour-tight to the inside of the vehicle. The cabinet shall be vented
downwards from the bottom of the cabinet by means of a tube not less than 1 in (25 mm) in
diameter that terminates at a point outside the vehicle and is directed away from any source of
ignition on the vehicle; or
(c) on a cylinder support bracket that extends below the level of the floor but not below the bottom of
the vehicle frame. The cover for that part of the cylinder extending above the floor shall be of
metal-clad construction that is vapour-tight to the interior of the vehicle.
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11.3.2
When a cylinder with a capacity in excess of 100 lb (45 kg) of propane is used on a commercial vehicle in
a cabinet or recess, the cabinet or recess shall be vented at the top and bottom, and the combined vent
area shall not be less than 5 in2 (3000 mm2).
11.3.3
All cylinders shall be secured by brackets, straps, or carriers designed and fabricated to withstand
calculated loading in any direction equal to at least four times the weight of the cylinder when filled with
propane.
11.3.4
The cylinder cabinet on a vehicle shall be installed with a road clearance that is not less than the minimum
road clearance of the vehicle under maximum spring deflection.
11.3.5
A cylinder system with a separate service and reserve supply of propane shall be equipped with an
automatic changeover regulator, valve, or equivalent to permit the replacement of a cylinder without
shutting off the flow of propane to the system.
11.3.6
Any hood, dome, or door of a cabinet that must be removed for the placement of a cylinder shall be
provided with a latch or other means to prevent it from opening.
11.3.7
Permanently installed cylinders shall meet the requirements of Clause 11.4.
11.4 Equipment on cylinders connected for use
11.4.1
On each cylinder, an excess-flow valve shall be provided and installed that is
(a) integral to the cylinder valve, provided that it has a separate relief valve port or the cylinder is
equipped with a relief valve that is separate from the service valve; or
(b) in the connection with the cylinder valve outlet.
11.4.2
A cylinder valve shall be protected by
(a) being set into a recess of a cylinder; or
(b) a ventilated cap or collar that is a part of the cylinder.
11.5 Installation of tanks
11.5.1
A tank located in an enclosed space on any vehicle shall have a working pressure for the tank and the set
pressure of its relief valve each equal to 312.5 psig (2150 kPa).
11.5.2
A tank located within an enclosed space of a vehicle shall be
(a) provided with a rigid gas-tight assembly that seals all tank equipment, inlets, and outlets from the
interior of the vehicle; and
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(b) equipped with remote fill outside fittings and installed with a conduit to prevent leakage from the
piping, tubing, and/or hose assembly from entering the interior of the vehicle. The remote fill outside
fittings shall be located to provide easy access for refuelling without requiring a person to kneel or lie
on the ground.
11.5.3
The enclosure referred to in Clauses 11.5.2(a) and 11.5.5(a) shall
(a) be made of corrosion-resistant metal;
(b) provide for water drainage; and
(c) be sealed to prevent entry of propane through the gauging or filling connections into any interior
vehicle space.
11.5.4
The sealant or gasket used for the purposes outlined in Clauses 11.3.1(a) to (c), (a), and 11.5.2(a) shall be
(a) nonshrinking and nonswelling;
(b) resistant to damage by propane, road salt, and vehicle vibration; and
(c) effective for use from –40°F (–40 °C) to 95°F (35 °C).
11.5.5
Filling and gauging fittings located away from a tank (remote fill) shall be protected from physical
damage by being located
(a) in a metal enclosure that is permanently mounted to the vehicle and does not protrude outside the
vehicle’s body; or
(b) so that the rear bumper, or some other part of a vehicle, will provide protection.
11.5.6
A propane withdrawal connection on a fuel tank shall be equipped with a shut-off valve that incorporates
an internal excess-flow valve.
11.5.7
A shut-off valve on a tank shall be accessible.
11.5.8
A tank shall be equipped with a stop-fill valve installed to ensure that the maximum permitted liquid
volume at the time of filling does not exceed 80% of the tank volume.
11.5.9
A label made of durable material that is not adversely affected by water, employing an adhesive that is
not water soluble, shall be affixed adjacent to the filling location. The label shall be worded as follows:
“EQUIPPED WITH A STOP-FILL VALVE. USE OF FIXED-LIQUID-LEVEL GAUGE IS NOT REQUIRED”*.
*The equivalent French wording is “POURVU D’UN ROBINET D’ARRÊT DE REMPLISSAGE ; L’UTILISATION D’UNE JAUGE À
TUBE FIXE N’EST PAS REQUISE”.
11.5.10
A tank on a vehicle shall be permanently installed, and proper anchorage shall be provided to prevent it
from jarring loose, slipping, or rotating. This requirement shall be deemed met when the force necessary
to detach the tank from the vehicle is not less than 20 times the weight of the full tank in a forward
direction, and not less than 8 times the weight of the full tank in a rearward, sideways, and vertical
direction.
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11.5.11
The tank manufacturer shall provide tank mounting brackets complete with a resilient material to be
installed between the supports or clamping bands and a container such that there is no direct
metal-to-metal contact with the container.
11.5.12
Tanks shall be installed on a vehicle with the brackets supplied by the tank manufacturer and shall be
installed in accordance with the manufacturer’s installation instructions.
11.5.13
A tank
(a) on a vehicle shall be so located as to minimize the possibility of damage;
(b) that is located at the rear of a truck and that is protected by a substantial bumper shall be deemed to
conform with Item (a); and
(c) that is mounted within 8 in (200 mm) of the engine or the exhaust system shall be shielded against
heat radiation by the use of a metal shield located not less than 1 in (25 mm) from the tank. The
metal heat shield shall not be attached to the exhaust system.
11.5.14
A tank or any other portion of the fuel system located outside a vehicle shall be installed with as much
road clearance as practicable, but never less than the minimum road clearance of the vehicle when loaded
to its gross vehicle weight rating. This minimum clearance shall be measured from the bottom of the tank
or from the lowest portion of any part of the fuel system when installed, whichever is lower, and shall not
be less than the following:
(a) between the axles
(i) 7 in (175 mm) on vehicles with a wheel base of 127 in (3175 mm) or less; or
(ii) 9 in (225 mm) on vehicles with a wheel base in excess of 127 in (3175 mm); or
(b) behind the rear axle, 8 in (200 mm).
The tank or any other portion of the fuel system shall be installed above a plane that contacts the
bottom of the rear tires and the lowest most rearward part of the vehicle as received from the
manufacturer.
11.5.15
All valves, connections, and gauging devices on a tank shall be protected to prevent damage due to
accidental contact with stationary objects or from loose objects thrown up from the road.
11.5.16
A new tank and its means of attachment that are exposed to corrosion or erosion shall be protected by a
coating that has a minimum ASTM salt spray rating of 1000 h as established in ASTM B117 and shows
no visible signs of corrosion. The test specimen shall be subjected to 42 cycles consisting of 8 h of
continuous salt spray followed by 16 h of ambient temperature. The finished coating shall be resistant to
abrasion such as that which can occur as a result of gravel or sand, or both, impacting the surface under
normal usage.
11.5.17
Prior to being returned to service, a tank that has been in service and is being reinstalled or installed on
another highway vehicle shall be inspected and requalified in accordance with one of the following
methods:
(a) When previously installed in an enclosed space protected from the environment and showing no
evidence of general corrosion, line corrosion, or isolated pitting, and when all details of the
manufacturer’s specification plate are legible, the tank shall be re-examined and re-marked in
accordance with the external visual cylinder reinspection procedure described in CGA C-6.
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(b) When previously installed in an area where it is subject to environmental corrosion and there is
evidence of general corrosion or line corrosion and/or isolated pitting, and when it does not meet
with the reinspection requirements specified in the external visual cylinder inspection part of
CGA C-6, the tank shall be cleaned to bare metal and have its exterior refinished with a protective
coating, and shall be re-examined and re-marked by an approved facility.
11.5.18
Re-examination shall be made only by a qualified person acceptable to the authority having jurisdiction,
and the results of that inspection shall be recorded on a data sheet that contains provisions for recording
the size of tank, inspection location, manufacturer’s name, date of manufacture, serial number, TCRN
(Transport Canada Registration Number), date of inspection, inspector’s initials, and whether the tank
was returned to service or removed from service. (See Table D.1 in Annex D for a sample.)
11.5.19
Records showing the results of reinspection and retest shall be kept by the facility carrying out the
inspection for a period of 10 years.
11.6 Piping, tubing, hose, and fittings
11.6.1
Sizing, testing, and purging of piping and tubing shall comply with Clause 6 of CSA B149.1.
11.6.2
A hose connector rated at not less than 350 psig (2500 kPa) shall be provided between
(a) the cylinder valve outlet and the inlet of the regulator when the regulator is rigidly mounted on a
support bracket; or
(b) the regulator outlet and the main propane piping or tubing when the regulator is rigidly fixed to
the cylinder valve outlet.
11.6.3
A propane line supplying a furnace in a mobile home or recreational vehicle may be routed through
a combustion-air or fresh-air make-up opening in the furnace base, provided that
(a) the propane piping through the furnace base consists of a single piece; and
(b) any connection to this piping is made above the level of the top of the furnace base and below
the lowest level of the floor or furnace base extension.
11.6.4
Propane piping and tubing located beneath a vehicle shall be securely fastened.
11.6.5
In the case of propane piping or tubing provided with more than one main supply connection, any supply
connection not in use shall be capped or plugged.
11.6.6
All propane piping and tubing shall be supported by metal straps or hangers that have been galvanized or
received equivalent protection. These supports shall be placed at intervals of not more than 4 ft (1.25 m),
except where support is provided by the structure, and shall be anchored within 6 in (150 mm) of each
end of the main propane line.
11.6.7
When copper tubing is installed on the exterior of the vehicle, it shall comply with CSA B149.5.
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11.6.8
Propane piping or tubing shall be so located or protected as to prevent damage.
11.6.9
Defects in propane piping or tubing shall not be repaired. Inferior or defective material shall be replaced.
11.6.10
Propane piping and fittings shall be clear and free from cutting burrs and defects.
11.6.11
A structural member of the vehicle shall not be cut, for the purpose of installing piping, in such a manner
as to reduce the strength of the member below the strength required for the purpose for which it was
intended.
11.6.12
When not connected to a container, the propane supply inlet shall be capped or plugged by the
manufacturer of the vehicle to exclude the entry of foreign matter.
11.6.13
Provision shall be made in the piping to allow for jarring, vibration, or movement of any appliance or
equipment.
11.6.14
An individual shut-off valve shall not be required for each appliance in a recreational vehicle.
11.6.15
Hose shall not be used in lieu of piping or tubing but may be used in conjunction with piping or tubing.
11.6.16
When an appliance is removed for servicing or repair, the supply line or branch line to that appliance
shall be sealed by means of a cap or plug.
11.6.17
Except for the final connection of piping, tubing, or hose to an appliance or for connection to a valve
as described in Clause 4.15.2, there shall be no connections in the piping or tubing within a vehicle.
11.7 Appliances
11.7.1
Every heating appliance, water heater, or refrigerator installed in a vehicle, other than a canvas top tent
trailer, shall be of the direct-vent appliance type or equivalent, and shall be installed to provide complete
separation of the combustion system from the atmosphere of the space provided for living.
11.7.2
A combustion air inlet or flue gas outlet of an appliance or any other vehicle opening shall be located at
least 3 ft (1 m) from any engine filler spout or liquid-level gauge of the vehicle if the intake, outlet, or
opening is located above or at the same level. If any portion of such inlet, outlet, or opening is located
below the spout or fixed-liquid-level gauge, the clearance shall be the sum of the vertical distance below
the spout or fixed-liquid-level gauge plus 3 ft (1 m).
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11.7.3
Propane vapour, at a pressure not in excess of 13 in w.c. (3.2 kPa), shall be supplied into the piping or
tubing supplying any appliance.
11.7.4
An appliance installed in a propane-equipped mobile home or recreational vehicle shall be certified for
use with propane.
11.7.5
Provision shall be made to ensure a supply of combustion air for an appliance, other than an appliance
of the direct-vent type, in accordance with Clause 8 of CSA B149.1.
11.7.6
An open door may be used as an alternative means of providing combustion or ventilation air to a
wash-mobile or food service vehicle, provided that the door is interlocked to the propane supply to
ensure that the door remains open during appliance operation.
11.7.7
A cargo heater shall be installed in a readily accessible location.
11.7.8
A cargo heater shall be protected to prevent damage or impaired operation resulting from the shifting
or handling of cargo.
11.8 Marking
11.8.1
A durable label in both English and French made of a material that is not adversely affected by water,
employing an adhesive that is not water soluble, and measuring not less than 4.5 × 5.75 in
(100 × 125 mm) shall be provided. This label shall be located on the vehicle, adjacent to the propane
container, and shall be worded as follows:
(a) in English:
WARNING
This system is designed for use with PROPANE only.
DO NOT CONNECT NATURAL GAS TO THIS SYSTEM.
Before turning on propane:
• Be certain appliances are certified for propane and are equipped with correct burner orifices.
• Make certain all propane connections have been made tight, all appliance valves are turned off,
and any unconnected outlets are capped.
After turning on propane:
• Light all pilots.
• Each connection, including those at appliances, regulators, and cylinders, shall be leak tested
periodically with soapy water by the occupant. Never use a lighted match or other flame when
checking for leaks.
• Do not leave system turned on or containers connected until system has been proven to be
propane-tight.
• Cooking appliances must not be used for space heating.
• When the containers are disconnected, the propane supply line must be capped or plugged.
(b) in French:
AVERTISSEMENT
Cette installation est conçue pour fonctionner au PROPANE seulement.
NE PAS ALIMENTER CETTE INSTALLATION AVEC DU GAZ NATUREL.
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Avant d’admettre le propane :
• S’assurer que l’appareil est certifié pour fonctionner au propane et qu’il est muni des orifices
de brûleur appropriés.
• S’assurer que tous les raccordements sont étanches, que tous les robinets d’appareils sont fermés
et que toutes les sorties non raccordées sont bouchées.
Après avoir ouvert l’admission de propane :
• Allumer toutes les veilleuses.
• L’occupant doit s’assurer périodiquement, à l’aide d’eau savonneuse, qu’il n’y a aucune fuite aux
points de raccordement des appareils, des régulateurs et des bouteilles. Ne jamais utiliser une
allumette allumée ou toute autre flamme pour déceler une fuite.
• Ne pas laisser le propane ni les récipients branchés avant de s’être assuré que l’installation ne
présente aucune fuite de propane.
• Ne pas utiliser des appareils de cuisson pour réchauffer une pièce.
• Lorsque les récipients sont débranchés, la tuyauterie d’alimentation en propane doit être bouchée.
The words “WARNING” and “PROPANE” and the phrase “DO NOT CONNECT NATURAL GAS TO THIS
SYSTEM” (and their equivalents in French) shall be a minimum of 1/4 in (6.4 mm) in height, and the
remainder of the wording shall be a minimum of 1/8 in (3.2 mm) in height.
11.8.2
On all vehicles equipped with appliances, a durable label, made of material not adversely affected by
water and employing an adhesive that is not water soluble, shall be provided in both English and French.
This label shall be attached adjacent to any fuel-filling locations (gasoline, diesel, or NGV) and propane
cylinders. The label shall be worded as follows:
(a) in English:
WARNING
Engine ignition and all appliance pilot lights shall be turned off before and during refuelling of motor
fuel tanks or any mounted propane container.
(b) in French:
AVERTISSEMENT
Couper le moteur et toutes les veilleuses des appareils avant et pendant le remplissage des réservoirs
de carburant et de tout récipient de propane installé.
The words “WARNING” and “AVERTISSEMENT” shall be a minimum of 1/4 in (6.4 mm) in height, and the
remainder of the wording shall be a minimum of 1/8 in (3.2 mm) in height.
11.9 Parking
Vehicles equipped with propane appliances shall not be parked or stored indoors except when
(a) propane storage cylinders have been removed;
(b) propane storage tanks have
(i) the propane contents reduced to not more than 50% of their maximum permitted filling
density; and
(ii) all shut-off valves in the closed position; or
(c) the parking facility is approved for this use.
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Annex A (informative)
Purging procedures for propane containers
Note: This informative Annex has been written in normative language to facilitate adoption where users of the Code or
regulatory authorities wish to adopt it formally as additional requirements to this Code.
A.1 Procedure for purging anhydrous ammonia from
propane containers
Wear a gas mask approved for ammonia service and suitable protective gloves during the purging
procedures. Ensure that other protective and emergency procedures and equipment conform with
regulations covering the handling of ammonia. Follow the steps outlined in Items (a) through (i):
(a) Make certain that ammonia liquid has been removed from the container and that the pressure is
reduced to atmospheric.
(b) Water purge the container using the procedure outlined in Clause A.2 or follow the procedures in
the NLPGA publication, Recommendations for Prevention of Ammonia Contamination of LP-Gas.*
(c) Test for the presence of ammonia by using the test method in Clause A.3 or in the publication
referenced in Item (b).
(d) Repeat the water purge until tests show that all the ammonia has been removed.
(e) Make certain that all valves and fittings are operational and have not been damaged by rust and
scale loosened by the purging.
(f) Check that the relief valves on the container are adequate for propane service. Propane requires a
relief valve that has approximately 2 times more free discharge area than required for anhydrous
ammonia.
(g) Make certain that valves, pumps, compressors, and, in particular, hoses and fittings are designed
for propane service.
(h) Check pressure gauges for accuracy.
(i) After purging and checking as described above, and before the container is put into propane
service, remove air and moisture in accordance with Clause A.4.
*The publication is available from the Propane Gas Association of Canada (PGAC), Suite 800, 717-7th Avenue S.W.,
Calgary, Alberta T2P 0Z3.
A.2 Purging flood — Water method
To remove anhydrous ammonia or propane from a tank, the following method can be used:
(a) Observe all safety precautions relative to the material being purged from the tank.
(b) After tank pressure has been reduced to atmospheric, open all top valves and remove the relief
valves.
(c) If the tank to be purged is a cargo liner or tank truck, block up the tank to minimize the possibility
of damage caused by abnormal weight.
(d) Drain or pump the water from the tank. Flow water through any bottom valves or piping.
Note: Water solutions of ammonia should not be emptied into sewers, drainage ditches, or streams. They should be spread
over soil.
Other recognized methods of purging anhydrous ammonia or propane from a tank are as effective and
are not precluded by the above method.
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A.3 Red litmus paper test for ammonia in propane
This test shall follow the purging of ammonia from tanks:
(a) The rotary gauge shall be positioned at the 100% mark and opened to allow a moderate stream of
vapour to escape. (If no rotary gauge is present, then an outage gauge or some other source of
vapour as near the top of the tank as possible should be used.) If no pressure is present in the tank,
the test may be taken through an opening near the top of the tank.
(b) A piece of red litmus paper that has been wetted by pouring distilled water on it shall be held by
tweezers in the vapour stream or in the atmosphere inside the tank for 30 s.
(c) If ammonia is present, the litmus paper will turn blue.
The accuracy of this test depends on the position in which the litmus paper is held in the stream of gas,
the rate at which the gas is escaping, and the cleanliness and care with which the litmus paper is handled.
This test is fairly sensitive and will detect the presence of ammonia in concentrations as low as 1 ppm.
The darker and faster the colour change, the higher the ammonia concentration. Usually 5 ppm
contamination will cause a colour change in about 10 s; 1 ppm will usually cause a slight change in
about 30 s.
Note: Since the red litmus paper will turn blue when exposed to any basic solution, care should be taken in performing the
test and interpreting the results. Tap water, saliva, and hands that have come into contact with water having a pH greater
than 7 or with ammonia-contaminated product from a previous test could give an erroneous reading.
A.4 Removal of air and moisture from cylinders and motor
fuel cylinders
A.4.1 General
New and reconditioned propane containers and propane containers that have had their interiors
exposed to the atmosphere, such as during a valve change, shall be purged of air and moisture.
Both air and moisture are contaminants that seriously interfere with the operation of a propane system.
Air in a container prevents it from being properly filled and interferes with the appliances connected to
the system.
Note: Air and moisture in a container can react with the odorant that is added to the propane. This can cause a chemical
reaction that can accelerate odour fade and thus diminish a person’s ability to detect a leak in the cylinder, piping, or
appliance to which the container is connected.
A.4.2 Moisture removal
Even if a careful inspection (using a pen flashlight) reveals no visible moisture, the container shall still be
dried, since dew can form on the walls. Additionally, the contained air can have relative humidity up to
100%.
A rule of thumb for removing moisture in a container calls for the introduction of at least 1 pint (0.6 L)
of genuine absolute anhydrous methanol (99.85% pure) for each 100 gal (450 L) of water capacity of the
container.
Substitutes shall not be used; they will not work. The secret of the superior effectiveness of methanol,
compared to all other alcohols, is that it has high affinity for water and has a boiling point lower than all
other alcohols and, most importantly, lower than water.
To be effective, the methanol shall come in contact with the water. Rotating the container so that the
entire interior surface of the container has been wetted by the methanol will speed up the absorption
process. If the container is not rotated, it will take about a week for the methanol to absorb the moisture.
In either case, the resulting solution of methanol and water shall be drained before the container is put
into service.
On this basis, the minimum volumes for typical containers would be as shown in Table A.1.
January 2010
77
B149.2-10
Table A.1
Minimum volumes of methanol for typical containers
(See Clause A.4.2.)
Container type
Minimum volume of
methanol required
Up to 20 lb (9 kg)
1/40 pt (20 mL)
100 lb (45 kg)
1/8 pt (0.1 L)
500 gal (2250 L) tank
5 pt (3 L)
1000 gal (4500 L) tank
10 pt (7 L)
2000 gal (9000 L) tank
20 pt (11 L)
A.4.3 Purging air and moisture using propane vapour
To remove air and moisture from a container being prepared for propane service using a purging
assembly as shown in Figure A.1, complete the following steps:
(a) If a quick disconnect is present, connect the appropriate adapter. Open the container service valve
and blow down to atmospheric pressure air trapped in the container.
(b) Inject 1/4 tsp (1 mL) of anhydrous methanol per 1 lb (454 g) capacity of the container being purged
into the container through the service valve and rotate the container until all interior metal of the
container has been exposed to the anhydrous methanol.
(c) Drain all liquid residues from the container.
(d) Connect the vapour purge line to the service valve on the container and pressure to 15 psig
(105 kPa).
(e) Close the vapour purge line and blow the contents to atmosphere.
(f) Repeat the steps in Items (d) and (e) four more times.
(g) Open the vapour purge supply line and pressure the container to 15 psig (105 kPa).
(h) Close the vapour purge supply valve and container service valves and retain the last 15 psig
(105 kPa) filled into the container.
(i) Disconnect the vapour purge supply line.
(i) Connect the liquid supply line to the container service valve. Open the liquid supply and container
service valves and charge to vapour pressure.
(j) Apply leak detection solution to all surfaces of the service valve, the service valve threads, and all
welded seams of the container.
(k) If no bubble leaks are apparent, the container may be filled and placed in service.
When purging containers, never use liquid propane. Use only vapour and always purge in a safe,
ignition-free location.
78
January 2010
Alcohol intake and
vapour-air exhaust
Pressure gauge
15 psig (105 kPa) regulator
Valve
15 psig
(105 kPa)
Vapour
Hose
Liquid
Supply
Container
to be
purged
Figure A.1
Typical container purging system
(See Clause A.4.3.)
A.4.4 Vacuum purging
Ensure that the container is designed for the vacuum to which it will be subjected.
To remove air and moisture from a container being prepared for propane service using vacuum
purging, complete the following steps:
(a) Connect the suction side of an LP-gas compressor to the container being purged. Open the
container valve and turn the compressor on.
(b) Ensure that any container opening is capped.
(c) Ensure that the outlet of the compressor is venting the air to atmosphere.
(d) Using an appropriate manometer, stop the process when the negative pressure reaches the value
stated in Table A.2, according to the altitude above sea level of the location where the purging is
taking place.
(e) Shut the container valve off.
(f) Connect the vapour line from the storage tank to the container. Open the valve and allow the flow
of propane until a pressure of approximately 15 psig (105 kPa) is reached.
(g) Add methanol as required and shut off the valve. The container is ready to be filled with propane.
January 2010
79
B149.2-10
Table A.2
Negative pressure required for vacuum purging
(See Clause A.4.4.)
Altitude above sea level, ft
80
Gauge reading, in Hg
0
25.85
500
25.31
1000
24.78
1500
24.26
2000
23.75
2500
23.24
3000
22.74
3500
22.25
4000
21.77
4500
21.29
5000
20.82
5500
20.35
6000
19.90
January 2010
Annex B (informative)
Guide for tank installations (see Clause 7.19.4)
Note: This Annex is not a mandatory part of this Code.
3.5 ft (1 m)
3.5 ft (1 m)
Entrances to suit
3.5 ft
(1 m)
Approx. 1 ft (300 mm) guardrail
mounted on 6 in (150 mm)
square posts 2 ft (600 mm)
maximum height from grade.
1 ft
(300 mm)
30 in (750 mm)
max.
Grade
Concrete pad
75 in
(1875 mm) max.
Figure B.1
Installation of a horizontal tank
January 2010
81
B149.2-10
54 in (1350 mm) maximum
3.5 ft (1 m)
1 ft (300 mm)
4 in (100 mm)
steel pipe,
30 in (750 mm)
above grade,
54 in (1350 mm)
maximum between
posts.
3.5 ft
(1 m)
3.5 ft
(1 m)
Grade
Concrete pad
3 ft
(900 mm)
1 ft
(300 mm)
Figure B.2
Installation of a vertical tank
82
January 2010
Annex C (informative)
Concrete trough
No. 9
Wire mesh
As required by
plate thickness
No. 4 Rebar
Depth as
required
Pipes
1in
Treated
wood
block
4 in
4 in
Width as
required
4 in
Treated
wood
block
Detail cross-section
Steel plate traffic areas*
(based on 23 370 lb truck wheel load)
Plate thickness, in
Maximum span, in
1/4
5/8
3/4
10
13
15-1/2
*The plate thickness for other areas is 1/4 in.
Figure C.1
Concrete trough
January 2010
83
B149.2-10
Table D.1
Cylinder inspection report
(See Clauses 6.1.5(a) and 11.5.18.)
84
sio
n
Co
l
l
a
or
op r and
en /
ing
Bu
l ge
s
Disposition
rro
Co
ak
s
Le
Condition
oti
ng
Serial Date TC
Name of
no.
mf’d spec.# Symb. manufacturer Type
Cylinders checked for
Fo
Cylinder inspection
TC Registration #:
Protective
coating
(S
& ectio
co n
de
)
Location:
Fir
da e
ma
ge
De
din nts
gs or
Annex D (informative)
Cylinder inspection report
Date
inspected
Inspector’s
initials
January 2010
January 2010
Annex E (informative)
Barrier protection
Figure E.1
Illustration of a typical New Jersey turnpike barrier
85
B149.2-10
Annex F (informative)
Piping expansion and flexibility
F.1 General
Problems with thermal expansion are not usually experienced in residential piping systems because the
piping is relatively short.
However, in commercial and industrial buildings there can be substantial variations in the lengths of
gas piping mains as the indoor temperature changes on weekends or between seasons. Provisions shall be
made in the piping design for flexibility to avoid undesirable bending and strong forces at elbows or joints.
This flexibility is obtained by the use of designed pipe bends, loops, offsets, expansion, hints, or swivel
joints. The piping shall be anchored at appropriate locations to control the direction of expansion and
contraction.
F.2 Gas piping to rooftop units
Due to the wide range of temperatures on a roof between summer and winter, piping design shall provide
for expansion and contraction. Because of the exposure to sunlight and rain or snow, coated or wrapped
gas piping is not recommended. Bare steel piping and fittings shall be cleaned after assembly, painted
with a metal primer, and given at least one coat of exterior enamel paint.
Expansion control loops should be used on pipe sizes of 2 in (50 mm) or less whenever the unrestrained
pipe length is at least 100 ft (30 m). Larger diameter piping is generally installed with expansion joints. As
shown in Figure F.1, the control loops consist of 90° offsets to the main pipe run so that they provide an
open-ended box configuration.
For purposes of design, a 90° change of direction or an offset can be considered as the equivalent to a
control loop when the offset length is at least three times Dimension A in Figure F.1.
Some form of thermal expansion control shall be provided for each 100 ft (30 m). For example, a 200 ft
(61 m) length needs to be anchored in the centre between each loop. An offset or 90° bend should have
its anchor not closer than 10 ft (3 m) from the bend to permit expansion.
Suitable pipe supports are commercially available to permit the free movement of piping when it
expands and contracts.
86
January 2010
A
A
Iron pipe size, in
Wall thickness (Schedule 40), in (mm)
Dimension A, ft
(m)
3/4
0.113 (2.87)
4.5 (1.4)
1
0.133 (3.38)
5.0 (1.5)
1-1/4
0.140 (3.56)
5.5 (1.6)
2
1.154 (29.31)
6.5 (2.0)
Figure F.1
Expansion control loop
(See Clause F.2.)
January 2010
87
B149.2-10
Annex G (informative)
Reference diagram for electrical classification
Sphere having radius
of 15 ft (4.5 m) — Division 2
Sphere having
radius of 5 ft (1.5 m) — Division 1
Horizontal
equator of
sphere
Point of connection
or source of
excessive release
of liquid or gas
Grade level
Cylindrical volume — Division 2
(includes bottom half of
15 ft (4.5 m) radius sphere)
Figure G.1
Electrical classification
(See Table 7.6.)
88
January 2010
Annex H (informative)
Sizing of dip tube length
Sizing of dip tube length shall be undertaken as follows:
(a) Where the cylinder has a dip tube marking, install a dip tube whenever a cylinder valve is replaced.
(b) To ensure that the correct dip tube length is selected, as required in Clause 6.1.5(c), match the dip
tube length stamped on the cylinder with the dip tube length provided on the replacement valve.
(c) After selecting and installing the replacement valve equipped with the correct dip tube, weigh the
cylinder and compare the tare weight to the tare weight stamped on the cylinder.
(d) Where a variance is noted, stamp out the incorrect tare weight on the cylinder and re-stamp with the
correct tare weight.
(e) To ensure that the correct dip tube length has been installed, prior to returning the cylinder to
service, purge the cylinder of air and moisture, then with the fixed-liquid-level gauge in the open
position, fill the cylinder.
(f) When liquid is observed at the fixed-liquid-level gauge, discontinue filling and weigh the cylinder
to ensure that the correct fill level has been achieved.
(g) Where the dip tube marking on a cylinder is missing or cannot be determined and the information
is not readily available from the manufacturer, install a standard cylinder valve that does not contain
provisions for a fixed-liquid-level gauge.
(h) Prior to returning to service, confirm the correct tare weight.
January 2010
89
B149.2-10
90
Annex I (informative)
Bar hole diagram
B
A
E
Bar holes
B
C
Bar holes
E
D
C
D
Bar holes
12 in
D
E
D
6 in
4 in
Figure I.1
Bar hole diagrams
January 2010
Annex J (informative)
General information
J.1 Abbreviations
J.1.1
The following abbreviations of names of organizations apply in this Code:
ASTM
American Society for Testing and Materials
100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, USA
CGA
Compressed Gas Association, Inc.
4221 Walney Road, 5th floor, Chantilly, VA, 20151-2923, USA
CGSB
Canadian General Standards Board
Gatineau, Québec K1A 1G6, Canada
CSA
Canadian Standards Association
5060 Spectrum Way, Suite 100,
Mississauga, Ontario L4W 5N6, Canada
DOT
Department of Transportation
400–7th Street S.W., Washington, D.C. 20590, USA
NFPA
National Fire Protection Association
1 Batterymarch Park, Quincy, Massachusetts 02169-7471, USA
NRC
National Research Council Canada
NRC Corporate Communications
1200 Montreal Road, Bldg. M-58
Ottawa, Ontario K1A 0R6, Canada
PGAC
Propane Gas Association of Canada
Suite 800, 717 7th Avenue S.W.,
Calgary, Alberta T2P 0Z3, Canada
TC
Transport Canada
330 Sparks Street, Ottawa, Ontario K1A 0N5, Canada
UL
Underwriters Laboratories Inc.
333 Pfingsten Road, Northbrook, Illinois 60062-2096, USA
ULC
Underwriters’ Laboratories of Canada
7 Underwriters Road, Toronto, Ontario M1R 3B4, Canada
January 2010
91
B149.2-10
J.1.2
The following abbreviations of words and phrases apply in this Code:
B&SG
— Brown and Sharpe gauge
Btuh
— British thermal unit per hour
°C
— degree Celsius
cfm
— cubic foot per minute
dm
— decimetre
°F
— degree Fahrenheit
ft
— foot
g
— gram
gal
— gallon
GPH
— gallon per hour
GSG
— galvanized sheet gauge
h
— hour
kg
— kilogram
kJ
— kilojoule
kPa
— kilopascal
kW
— kilowatt
L
— litre
lb
— pound
mA
— milliampere
MAWP — maximum allowable working pressure
min
— minute
mm
— millimetre
MSG
— manufacturers standard gauge
N
— newton
No.
— number
NPS
— nominal pipe size
oz
— ounce
Pa
— pascal
ppm
— parts per million
psig
— pound per square inch gauge
pt
— pint
s
— second
scf
— standard cubic feet
SI
— International System of Units
SWG
— steel wire gauge
USWG — United States water gallon
V
— volt
W
— watt
w.c.
— water column
WC
— water capacity
wt
— weight
92
January 2010
J.2 Propane and butane: properties and combustion data
The following properties and combustion data have been taken from various sources, and the values
shown are for an average commercial grade of propane and butane. It should be kept in mind that the
commercial grades vary, and, therefore, the values in the tables can also vary.
Table J.1
Properties of commercial propane and butane
(a) Imperial
Property
Propane
Butane
Chemical formula
C3H8
C4H10
Molecular weight
44.06
58.10
Freezing point, °F, at atmospheric pressure
–310
–260
Boiling point, °F
–44
32
Normal state, at 60°F, atmospheric pressure
Gas
Gas
Relative density of gas (air = 1)
1.52
2.00
Relative density of liquid (water = 1)
0.51
0.58
Mass per gal of liquid at 60°F, lb
5.1
5.8
Btu/ft3 (vaporized)
2520
3260
Btu/lb (vaporized)
21 622
21 190
Btu/gal (vaporized)
109 956
122 900
ft of vapour from 1 lb of liquid at 60°F
8.5
6.5
ft3 of vapour from 1 gal of liquid at 60°F
44
38
Latent heat of vaporization at boiling point, Btu/lb
185
166
Latent heat of vaporization at boiling point, Btu/gal
944
968
Specific heat of vapour, Btu/lb/°F at 60°F
0.405
0.385
Specific heat of liquid, Btu/lb/°F at 60°F
0.590
0.550
Mass density of vapour, lb/ft3
0.116
0.153
31.7
36.0
3
3
Mass density of liquid, lb/ft
(Continued)
January 2010
93
B149.2-10
Table J.1 (Concluded)
(b) Metric
Property
Propane
Butane
Chemical formula
C3H8
C4H10
Molecular weight
44.06
58.10
Freezing point, °C, at atmospheric pressure
–190
–162
Boiling point, °C
–42
0
Normal state, at 15 °C, atmospheric pressure
Gas
Gas
Relative density of vapour (air = 1)
1.52
2.00
Relative density of liquid (water = 1)
0.51
0.58
Mass per L of liquid at 15.5 °C, kg
0.51
0.58
kJ/m3 (vaporized)
93 800
121 500
kJ/kg (vaporized)
49 700
49 400
kJ/L (vaporized)
24 700
27 600
m3 of vapour from 1 kg of liquid at 15 °C
0.53
0.41
m3 of vapour from 1 L of liquid at 15 °C
0.265
0.22
Specific enthalpy, kJ/kg
430
386
Specific enthalpy, kJ/L
219
225
Specific heat of vapour, J/kg/°C at 15 °C
1695
1610
Specific heat of liquid, J/kg/°C at 15 °C
2470
2300
1.86
2.45
0.51
0.58
Mass density of vapour, kg/m
Mass density of liquid, kg/L
94
3
January 2010
Table J.2
Combustion data
(a) Imperial
Property
Propane
Butane
ft3 of air required to burn 1 ft3 of gas
23.5
30.0
ft3 of oxygen required to burn 1 ft3 of gas
5
6.25
ft of air required to burn 1 lb of gas
200
195
Ignition temperature, °F
920–1020
900–1000
Maximum flame temperature, °F
3600
3625
Percentage of gas in air for maximum flame temperature
4.4
3.5
Maximum rate of flame propagation in 1 in tube, in/s
32
33
Percentage of gas at lower limit
2.4
1.9
Percentage of gas at upper limit
9.5
8.5
Percentage of gas at maximum rate of flame propagation
4.8
3.8
Octane number (iso-octane 100)
125
91
3.0
3.9
4.0
5.0
18.5
23.6
lb of water (H2O)/lb of gas
1.6
1.5
lb of nitrogen (N2)/lb of gas
12.0
11.8
Ultimate carbon dioxide (CO2) percentage by volume
13.9
14.1
3
Limits of flammability, percentage of gas in air mixture:
Products of complete combustion:
ft3 of carbon dioxide (CO2)/ft3 of gas
3
3
3
)/ft3
ft of water vapour/ft of gas
ft of nitrogen (N2
of gas
(Continued)
January 2010
95
B149.2-10
(b) Metric
Property
Propane
Butane
23.5
30.0
5
6.25
m of air required to burn 1 kg of gas
12.3
11.7
Ignition temperature, °C
493–549
482–538
Maximum flame temperature, °C
1982
1996
Percentage of gas in air for maximum flame temperature
4.4
3.5
Maximum rate of flame propagation in 25 mm tube, mm/s
813
838
Percentage of gas at lower limit
2.4
1.9
Percentage of gas at upper limit
9.5
8.5
Percentage of gas at maximum rate of flame propagation
4.8
3.8
Octane number (iso-octane 100)
125
91
3.0
3.9
m of water vapour/m of gas
4.0
5.0
m3 of nitrogen (N2)/m3 of gas
18.5
23.6
kg of water (H2O)/kg of gas
1.6
1.5
kg of nitrogen (N2)/kg of gas
12.0
11.8
Ultimate carbon dioxide (CO2) percentage by volume
13.9
14.1
m3 of air required to burn 1 m3 of gas
3
3
m of oxygen required to burn 1 m of gas
3
Limits of flammability, percentage of gas in air mixture:
Products of complete combustion:
m3 of carbon dioxide (CO2)/m3 of gas
3
96
3
January 2010
Table J.3
Temperature vs. pressure
Temperature
Vapour pressure, psig (kPa)
°F
(°C)
Propane
–45
(–43)
0 (0)
—
—
–40
(–40)
1.5 (10.3)
—
—
–35
(–37)
3.4 (23.4)
—
—
–30
(–34)
5.6 (35.6)
—
—
–25
(–32)
8.0 (55.2)
—
—
–20
(–29)
10.7 (74)
—
—
–15
(–26)
13.6 (94)
—
—
–10
(–23)
16.7 (115)
—
—
–5
(–20)
20.0 (138)
—
—
0
(–18)
23.5 (162)
—
—
5
(–15)
27.2 (188)
—
—
10
(–12)
31.3 (216)
—
—
15
(–9)
35.9 (248)
—
—
20
(–7)
40.8 (281)
—
—
25
(–4)
46.2 (319)
—
—
30
(–1)
51.6 (356)
—
—
35
(2)
57.3 (395)
1.3 (9.0)
40
(4)
63.3 (437)
3.0 (20.7)
45
(7)
69.9 (482)
4.9 (33.8)
50
(10)
77.1 (532)
6.9 (47.6)
55
(13)
84.6 (583)
9.1 (62.7)
60
(16)
92.4 (637)
11.6 (80)
65
(18)
100.7 (694)
14.2 (98)
70
(21)
109.3 (754)
16.9 (117)
75
(24)
118.5 (817)
19.8 (137)
80
(27)
128.1 (883)
22.9 (158)
85
(29)
138.4 (954)
26.2 (181)
90
(32)
149.0 (1027)
29.8 (205)
95
(35)
160.0 (1103)
33.5 (231)
100
(38)
172.0 (1186)
37.5 (259)
105
(41)
185.0 (1276)
41.7 (288)
Butane
(Continued)
January 2010
97
B149.2-10
Temperature
Vapour pressure, psig (kPa)
°F
(°C)
Propane
110
(43)
197.0 (1358)
46.1 (318)
115
(46)
211.0 (1455)
50.9 (351)
120
(49)
225.0 (1551)
56.1 (357)
125
(52)
239.0 (1648)
61.3 (423)
130
(54)
257.3 (1774)
66.7 (460)
135
(57)
273.3 (1884)
72.3 (498)
140
(60)
290.3 (2002)
77.9 (537)
165
(74)
—
—
145.3 (795)
180
(82)
—
—
145.3 (1002)
Butane
Table J.4
Burner port capacities
98
Port size, drill no.
(diameter, mm)
Average recommended
input per port, Btuh (kW)
Recommended port
spacing, in (mm)
54
(1.4)
72
(0.021)
—
—
52
(1.61)
88
(0.026)
3/16
(4.8)
50
(1.78)
98
(0.029)
—
—
48
(1.93)
108
(0.032)
—
—
46
(2.06)
114
(0.033)
1/4
(6.5)
44
(2.18)
120
(0.035)
—
—
42
(2.37)
130
(0.038)
—
—
40
(2.49)
134
(0.039)
5/16
(7.9)
38
(2.58)
142
(0.042)
—
—
36
(2.71)
150
(0.044)
—
—
34
(2.82)
162
(0.047)
3/8
(9.5)
32
(2.95)
174
(0.051)
—
—
30
(3.26)
204
(0.06)
—
—
28
(3.57)
246
(0.072)
7/16
(11)
26
(3.73)
270
(0.079)
—
—
January 2010
Table J.5
Orifice capacity table
Drill size
(diameter, mm)
Orifice capacity, Btuh (kW)
11 in w.c. (2.75 kPa)
Propane
Butane
80
(0.343)
1 248
(0.366)
1 409
(0.413)
79
(0.358)
1 448
(0.413)
1 635
(0.479)
78
(0.406)
1 769
(0.518)
1 998
(0.585)
77
(0.457)
2 275
(0.666)
2 570
(0.753)
76
(0.508)
2 842
(0.83)
3 215
(0.94)
75
(0.533)
3 120
(0.91)
3 544
(1.04)
74
(0.572)
3 624
(1.06)
4 095
(1.2)
73
(0.61)
4 152
(1.22)
4 690
(1.37)
72
(0.635)
4 510
(1.32)
5 100
(1.49)
71
(0.66)
4 880
(1.43)
5 508
(1.61)
70
(0.711)
5 660
(1.66)
6 395
(1.9)
69
(0.743)
6 156
(1.8)
6 950
(2.0)
68
(0.787)
6 940
(2.0)
7 834
(2.3)
67
(0.813)
7 382
(2.2)
8 340
(2.4)
66
(0.838)
7 853
(2.3)
8 865
(2.6)
65
(0.889)
8 841
(2.6)
9 975
(2.9)
64
(0.914)
9 350
(2.7)
10 570
(3.1)
63
(0.94)
9 877
(2.9)
11 160
(3.3)
62
(0.965)
10 420
(3.1)
11 780
(3.5)
61
(0.991)
10 986
(3.2)
12 400
(3.6)
60
(1.02)
11 540
(3.4)
13 030
(3.8)
59
(1.04)
12 115
(3.5)
13 700
(4.0)
58
(1.07)
12 720
(3.7)
14 375
(4.2)
57
(1.09)
13 355
(3.9)
15 080
(4.4)
56
(1.18)
15 600
(4.6)
17 600
(5.2)
55
(1.32)
19 550
(5.7)
22 120
(6.5)
54
(1.4)
21 960
(6.4)
24 820
(7.3)
53
(1.51)
25 630
(7.5)
29 000
(8.5)
52
(1.61)
29 220
(8.6)
33 060
(9.7)
51
(1.7)
32 630
(9.6)
36 840
(10.8)
(Continued)
January 2010
99
B149.2-10
Drill size
(diameter, mm)
100
Orifice capacity, Btuh (kW)
11 in w.c. (2.75 kPa)
Propane
Butane
50
(1.78)
35 730
(10.5)
40 340
(11.8)
49
(1.85)
38 950
(11.4)
44 100
(12.9)
48
(1.93)
42 375
(12.4)
47 860
(14.0)
47
(1.99)
45 560
(13.3)
51 500
(15.1)
46
(2.06)
48 900
(14.3)
55 250
(16.2)
45
(2.08)
50 440
(14.8)
56 830
(16.6)
44
(2.18)
55 500
(16.3)
62 650
(18.4)
43
(2.26)
59 440
(17.4)
67 160
(19.8)
42
(2.37)
64 620
(18.9)
74 160
(21.7)
41
(2.44)
69 175
(20.2)
78 150
(22.9)
40
(2.49)
72 000
(21.1)
81 400
(23.8)
39
(2.53)
74 380
(21.8)
84 000
(24.6)
38
(2.58)
77 400
(22.7)
87 400
(25.6)
37
(2.64)
81 125
(23.8)
91 640
(26.9)
36
(2.71)
85 170
(25.0)
96 150
(28.3)
35
(2.79)
90 600
(26.6)
102 700
(30.1)
34
(2.82)
92 500
(27.1)
104 500
(31.0)
33
(2.87)
96 000
(28.1)
108 300
(31.7)
32
(2.95)
100 900
(29.6)
114 000
(33.4)
31
(3.05)
108 125
(31.7)
122 130
(35.8)
1/64
(0.397)
1 686
(0.492)
1 897
(0.556)
1/32
(0.794)
7 030
(2.1)
7 935
(2.3)
3/64
(1.19)
15 960
(4.7)
17 970
(5.3)
1/16
(1.59)
28 320
(8.3)
32 000
(9.4)
5/64
(1.98)
45 150
(13.2)
51 000
(14.9)
3/32
(2.38)
65 920
(19.3)
74 500
(21.8)
7/64
(2.78)
89 825
(26.3)
101 500
(29.7)
1/8
(3.18)
117 150
(34.3)
132 400
(38.8)
January 2010
Table J.6
Volume* and relative density† correction factors
for propane and butane
Temperature
°F
(°C)
Propane
0.510
Butane
0.580
–50
(–46)
1.153
1.111
–40
(–40)
1.140
1.101
–30
(–34)
1.128
1.092
–20
(–29)
1.114
1.082
–10
(–23)
1.100
1.072
0
(–18)
1.088
1.063
4
(–16)
1.082
1.059
8
(–13)
1.077
1.055
12
(–11)
1.071
1.051
16
(–9)
1.066
1.046
20
(–7)
1.061
1.042
24
(–4)
1.055
1.038
28
(–2)
1.049
1.034
32
(0)
1.043
1.030
36
(2)
1.037
1.025
40
(4)
1.031
1.021
44
(7)
1.025
1.017
48
(9)
1.019
1.013
52
(11)
1.012
1.009
56
(13)
1.006
1.004
60
(16)
1.000
1.000
64
(18)
0.994
0.996
68
(20)
0.987
0.991
72
(22)
0.981
0.987
76
(24)
0.974
0.982
80
(27)
0.967
0.978
84
(29)
0.960
0.974
88
(31)
0.953
0.969
92
(33)
0.946
0.964
96
(36)
0.939
0.959
(Continued)
January 2010
101
B149.2-10
Temperature
°F
(°C)
Propane
0.510
Butane
0.580
100
(38)
0.932
0.954
110
(43)
0.913
0.943
120
(49)
0.894
0.931
130
(54)
0.873
0.918
140
(60)
0.852
0.905
*A volume of propane measured at –50°F (–46 °C)
corresponds to the volume × 1.153 at 60°F (15 °C).
†Propane at –50°F (–46 °C) has a relative density of
0.510 × 1.153 = 0.588.
J.3 Estimation of total customer load
The best way to estimate total customer load is as follows:
(a) Determine the Btuh (kW) input from the appliance nameplates or from the manufacturer’s
catalogue.
(b) Add the input of all the appliances for the total load.
(c) If the load in cubic feet is desired for propane, divide the load in Btuh by 2500. If the load in cubic
metres is desired for propane, divide the load in kW by 26.
(d) If specific information on appliance input is not available, consult Table J.7.
Remember always to allow for the future installation of other appliances.
The total load is the one to use in sizing storage requirements and piping. The actual load will depend
on the weather, the size of the family, and family habits.
102
January 2010
Table J.7
Propane required for average appliances, boilers,
and internal combustion engines*
(See Clause J.3.)
Propane
Appliance or service
Btuh
(kW)
Domestic gas range (4-burner top)
65 000
(19)
Domestic gas range (6-burner top)
105 000
(31)
Domestic built-in oven or broiler unit
25 000
(7)
Domestic built-in top unit
40 000
(12)
Domestic hot plate, per burner
9000–12 000
(2.6–3.5)
Domestic room heater, single radiant
12 000
(3.5)
Domestic room heater, double radiant
10 000–85 000
(3–25)
Water heater, storage type, slow recovery
2000–10 000
(0.7–3)
Water heater, storage type, fast recovery
15 000–75 000
(4.4–22)
Domestic clothes dryer
35 000
(10)
Conversion burner
25 000–750 000
(7–220)
Refrigerator
2000–4000
(0.6–1.2)
Floor furnace
10 000–85 000
(3–25)
Warm-air furnace
40 000–300 000
(12–88)
Steam boilers, per boiler horsepower (kW)
60 000–75 000
(17.6–22)
Internal combustion engines, per horsepower (kW)
9000–10 000
(3.5–3.9)
*For accuracy, the manufacturer’s Btuh rating should be used.
Table J.8
Number of cylinders required to meet Btuh demand
Required demand,
Btuh
Install at least this number of 100 lb cylinders when lowest
outdoor temperature (average for 24 h period) is
32°F
20°F
10°F
0°F
–10°F
–20°F
–30°F
25 000
1
1
1
1
1
1
2
62 500
1
1
1
2
2
3
4
125 000
2
2
3
3
4
5
9
250 000
4
4
5
6
7
10
20
Note: If a changeover system is being used, each bank should include the number of cylinders
shown in the Table. This Table is based on cylinders being at least 33% full.
January 2010
103
B149.2-10
Table J.9
Size of tank in USWG required to meet
Btuh demand (without vaporizer)
Required demand,
Btuh
Make certain tank has at least this capacity USWG when lowest
outdoor temperature (average for 24 h period) is
32°F
20°F
10°F
0°F
–10°F
–20°F
–30°F
125 000
115
115
115
250
250
400
600
250 000
250
250
250
400
500
1000
1500
375 000
300
400
500
500
1000
1500
2500
500 000
400
500
750
1000
1200
2000
3500
750 000
750
1000
1500
2000
2500
4000
5000
Note: Too large a tank does no harm. Too small a tank can lose a customer. Make sure that the
delivery schedule is such that the tank is kept as full as possible during severe weather. This Table is
based on the tank being at least 33% full.
Table J.10
Determining propane vaporization capacity of a tank —
“Rule of thumb” guide for propane storage tanks
Percentage of
tank filled
K* equals
Propane vaporization capacity
at 0°F (–18 °C),
Btuh (kW)†
60
100
D‡ × L§ × 100
D × L × 100
2 200 000
50
90
D × L × 90
D × L × 90
2 200 000
40
80
D × L × 80
D × L × 80
2 200 000
30
70
D × L × 70
D × L × 70
2 200 000
20
60
D × L × 60
D × L × 60
2 200 000
10
45
D × L × 45
D × L × 45
2 200 000
*K = constant for percentage volume of liquid in tanks.
†These formulas allow for the temperature of the liquid to refrigerate to –20°F
(–29 °C), producing a temperature differential of 20°F (–7 °C) for the transfer of
heat from the air to the tank’s “wetted” surface and then into the liquid. The
vapour space area of the tank is not considered. Its effect is negligible.
‡D = outside diameter, in (mm).
§L = overall length, in (mm).
104
January 2010
Table J.11
Vaporizing capacities for other air temperatures
Multiply the results obtained from
the formulas in Table J.12 by one
of the following multipliers for the
prevailing air temperature
Prevailing air
temperature
°F
(°C)
Multiplier
–15
(–26)
0.25
–10
(–23)
0.50
–5
(–21)
0.75
0
(–18)
1.00
5
(–15)
1.25
10
(–12)
1.50
15
(–9)
1.75
20
(–7)
2.00
Table J.12
To convert volumes of one kind of gas to volumes of a different
kind of gas passing through an orifice or regulator
(See Table J.11.)
January 2010
If you have a volume of natural gas and
want to know equivalent volume of
Propane:
Butane:
Air:
Multiply by 0.63
Multiply by 0.55
Multiply by 0.77
If you have a volume of butane and
Propane:
Natural gas:
Air:
Multiply by 1.15
Multiply by 1.83
Multiply by 1.42
If you have a volume of air and want
to know equivalent volume of
Propane:
Butane:
Natural gas:
Multiply by 0.81
Multiply by 0.71
Multiply by 1.29
If you have a volume of propane and
Butane:
Natural gas:
Air:
Multiply by 0.87
Multiply by 1.58
Multiply by 1.23
105
B149.2-10
Table J.13
Conversion table
106
Multiply
By
To obtain
Btuh
0.00029295
kilowatts
cubic feet
28.31685
cubic decimetres
cubic feet
0.028317
cubic metres
degrees Fahrenheit
(temp in °F – 32) × 5/9
degrees Celsius
feet
0.3048
metres
inches
25.4
millimetres
inches water column
249
pascals
inches water column
0.249
kilopascals
pounds force
4.44822
newtons
pounds per square inch
6.894757
kilopascals
square inches
645.16
square millimetres
January 2010
Annex K (informative)
Two-stage regulation
K.1 General
Two-stage regulation is required on all permanent propane installations. (See Clause 5.2.2.2 of
CSA B149.1.)
In the two-stage regulation system shown in Figure K.1, the first stage regulator is mounted on the
supply container and reduces the container pressure in the line to a range of 5 to 10 psig (35 to 70 kPa).
The second stage regulator is mounted at the building wall and further reduces the regulated line
pressure to 11 in w.c. (2.7 kPa) prior to entering the building.
Advantages are
(a) stable pressure at the appliance; and
(b) ability to use reduced size piping and reduction of regulator freeze-up.
Caution shall be exercised in sizing regulators. Inlet pressure, outlet pressure, and capacity shall be
considered. Regulator flow curves produced by regulator manufacturers are of great assistance in the
proper selection of regulators.
First
stage
Second
stage
5 to 10 psig (35 to 70 kPa)
Figure K.1
Two-stage regulation system
(See Clause K.1.)
K.2 Entering a propane tank
Entry into tanks can be necessary to perform tasks that cannot be accomplished from the outside. From
experience, it is well known that entry into a tank can present hazards to the person entering the tank.
Precautions shall be taken when entering a tank, and adequate steps to control or eliminate potential
hazards shall be taken before and during this type of operation.
January 2010
107
B149.2-10
Any person undertaking work where entry into a tank is involved shall be familiar with the requirements
covering entry into confined spaces and shall be prepared to comply with these requirements.
K.3 Proper use of excess-flow valves
The primary purpose of an excess-flow valve shall be to protect against excessive flow when breakage of
pipe lines or hose rupture takes place. When referring to breakage or rupture, a clean and complete
separation shall be assumed. It is obvious that if the damage is only a crack or if the piping is crushed at
the point of failure, the escaping flow will be restricted and sometimes it cannot pass sufficient vapour or
liquid to cause the excess-flow valve to close.
An excess-flow valve, while in its normal open position, shall permit the flow of liquid or gas in either
direction. Flow shall be controlled in one direction only. Each excess-flow valve shall be stamped with an
arrow showing the direction in which the flow is controlled. If the flow in that direction exceeds a
predetermined rate, the valve automatically closes. Manufacturers’ catalogues show the closing flow
rating both in terms of liquid and vapour.
Since excess-flow valves depend on flow for closure, the line leading away from the excess-flow valve
should be large enough to ensure that it will not excessively restrict the flow. If the pipe run is unusually
long or restricted by numerous elbows, tees, or other fittings, consideration should be given to the use of
large pipe and fittings. A pipe size smaller than that of the excess-flow valve shall never be used.
It is considered good practice to select an excess-flow valve with a rated closing flow approximately
50% greater than the anticipated normal flow. This is important because valves that have a closing flow
very close to the normal flow can chatter or slug closed when surges in the line occur either during normal
operation or due to the rapid opening of a control valve.
108
January 2010
Annex L (informative)
Hose connector lengths
Table L.1
Hose connector lengths
Inside
diameter
Minimum
length*
in
(mm)
in
1/4
(6.4)
6
(150)
1/2
(12.7)
8
(200)
3/4
(19.1)
8
(200)
1
(25.4)
10
(250)
1-1/4
(31.8)
10
(250)
1-1/2
(38.1)
10
(250)
2
(50.8)
12
(300)
3
(76.2)
14
(350)
4
(101.6)
16
(400)
(mm)
*The above lengths represent the exposed
portion of hose between the end fittings of the
hose connector.
January 2010
109
B149.2-10
Index
A
Abbreviations
organizations J.1.1
words and phrases J.1.2
Accessibility
access opening 4.12.3
access to tank-filling connector 7.1.11
passageway to appliance 4.12.4
service access 4.12.1, 4.12.2
Air intakes. See also Ventilation
distance from cylinder 6.7.2(b), 6.8(e)
distance from filling operations 5.2.7, 5.2.12
distance from vent terminations 5.8.1(b), 6.5.2.5(f)
Anhydrous ammonia
containers 5.2.5
purging A.1, A.2
Appliances
accessibility 4.12
approval 4.2.1–4.2.3
assembly or construction 4.2.3
automatic fire-extinguishing systems 4.15
clearances to combustible materials 4.11
damaged appliances 4.5.3
direct-vent appliances 5.8.1(b), 11.7.1
installation
high altitudes 4.18
highway vehicles, mobile homes, outdoor food service units,
recreational vehicles, and wash-mobiles
air supply 11.7.2, 11.7.5, 11.7.6
cargo heaters 11.7.7, 11.7.8
direct vent type required 11.7.1
fuel supply pressure 11.7.3
general requirements 11.1.2, 11.1.4, 11.1.6, 11.1.8
inlets and outlets 11.7.2
markings 11.8
parking 11.9
protection 4.19
rating plate 4.12.2
suitability of use 4.5
used appliances 4.5.4
Approval
assembly or construction of appliances 4.2.3
deviations 4.2.2
equipment 4.2.1
Automatic fire-extinguishing systems
installation 4.15.1
interlock with propane supply 4.15.1, 4.15.2
manual shut-off valve 4.15.3
valve requirements 4.15.2
110
January 2010
B
Blast cleaning (tanks) 7.8.4(a)
Bleed valves
cylinders 6.2
tanks 7.6.3
Boilers
fuel requirements Table J.7
separation from indirect vaporizers 9.2.4
Butane
burner port capacities Table J.4
combustion data Table J.2
conversion tables Table J.12, J.13
cylinders and tanks 5.2.3, 6.4.2, 7.7.1
number of cylinders required to meet demand Table J.8
orifice capacities Table J.5
properties Table J.1
quantity required for appliances and services Table J.7
requirements of CAN/CGSB-3.13 4.1.1
size of tank required to meet demand Table J.9
temperature vs. pressure Table J.3
vaporizing capacities Tables J.3, J.11
volume and relative density correction factor Table J.6
C
Cargo heaters 11.7.7, 11.7.8
Cargo liners. See Tank trucks and cargo liners
Cathodic protection (underground tanks) 7.8.3–7.8.7
Cleaning and polishing equipment 6.5.7
Clearances
appliance rating plate 4.12.2
cylinder storage clearances 6.5.1.9, Table 6.3
general requirements 4.11
service clearances 4.12.2
tank installations 7.10.2
Combined heating systems 4.14
Combustible dust or fibres 4.7.2
Commercial and industrial sites 6.5.5
Connectors, flexible
cylinder installations 6.7.1
Construction heaters 6.5.3.5(g)
Construction sites 6.5.3
Consumer tanks
location 7.10, Table 7.4
transport 7.21
Containers. See also Propane engine fuel, fuel containers
anhydrous ammonia 5.2.5
disconnection 5.3.4
filling
certification of personnel 5.2.1
location 5.2.7
prohibited containers
5.2.5
protection of equipment 5.3.1
responsibilities of personnel 5.2.2, 5.2.4, 5.2.6
January 2010
111
B149.2-10
highway vehicles, mobile homes, outdoor food service units, recreational vehicles, and
wash-mobiles
exterior mounting 11.2.1
general requirements 11.1.2, 11.1.4, 11.1.7, 11.2.4
markings 11.8
relief valve discharge 11.2.3
interconnection of separate vehicles prohibited 11.2.2
protection 5.3.2–5.3.4
purging 5.2.8–5.2.10, 5.2.12, A.1–A.4
repair and requalification 5.2.9
storage (filling plants) 7.14
transportation 7.21
Corrosion control monitoring (underground tanks) 7.8.7
Corrosive vapours 4.7.1
Cylinders
automatic regulating equipment 6.3
below-grade installation prohibited 6.7.4
connection and disconnection 6.5.3.7, 6.5.4.5, 6.5.5.3, 6.5.7.6
elevator transfer to rooftop 6.8
filling
80% capacity by volume limit 7.12.11
by volume 6.4.2, Table 6.2
by weight 6.4.2, Table 6.1
discharge to atmosphere 6.4.3
maximum permitted filling density 6.4.2
on construction sites 6.5.3.4
general requirements 6.1.1–6.1.3
wash-mobiles
changeover device 11.3.5
connected cylinders 11.4
cylinder cabinet 11.3.2, 11.3.4, 11.3.6
excess-flow valve 11.4.1
general requirements 11.1.5
interior mounting 11.3.1–11.3.3
venting 11.3.2
indoor use
cleaning and polishing equipment 6.5.7.4–6.5.7.8
clearances 6.5.1.9
construction sites 6.5.3.5, 6.5.3.6
electrical wiring and equipment 6.5.1.12
portable food-serving carts 6.5.9
welding, cutting, and preheating processes 6.5.4.3, 6.5.4.4
inspection and re-marking 6.1.5
installation
diking and grading 6.9
rooftop installations 6.8
liquid level gauge 6.2
markings 6.1.9, 11.8.1
NO SMOKING signs 6.5.2.6, 6.5.7.3
nonrefillable (“single-trip”) cylinders 6.4.5, 6.5.1.4
plug (cap) 6.1.9, 6.5.1.6
purging 6.4.1, A.4
112
January 2010
refilling (where prohibited) 6.4.5
relief valve
replacement 6.1.5(c)
requirements 6.1.7, 6.1.8
removal from service 6.4.4
requalification 6.1.5, 6.1.14
storage, indoor
cleaning and polishing equipment 6.5.7.1
food service locations 6.5.9.3
restaurants 6.5.9.3
retail outlets (nonrefillable cylinders) 6.5.6
warehouses (nonrefillable cylinders only) 6.5.6
storage, locations other than filling plants
general requirements 6.5.1.1, 6.5.1.4–6.5.1.8, 6.5.1.10, 6.5.1.11
prohibited locations 6.5.1.2, 6.5.1.3, 6.5.1.14
storage, outdoor
against industrial buildings 6.5.2.5
cabinets 6.5.2.1, 6.5.2.4
cleaning and polishing equipment 6.5.7.1, 6.5.7.2
clearances 6.5.1.9, Table 6.3
commercial and industrial sites 6.5.5
construction sites 6.5.3.1–6.5.3.4
electrical equipment and fixtures 6.5.1.13
fencing 6.5.2.2, 6.5.2.3
welding, cutting, and preheating processes 6.5.4.1
where required 6.5.3.1, 6.5.4.1, 6.5.5.1, 6.5.7.1
storage, special rooms or buildings
construction 6.5.10
materials to be stored 6.5.8
venting 6.5.10.4
transportation
delivery vehicles 6.6.4, 6.6.6, 6.6.7
general requirements 6.6.1, 6.6.3, 6.6.5
valves 6.1.9–6.1.14
D
Definitions 3
Design pressure (tanks) 5.2.3, 7.1.1
Diking and grading
cylinder installations 6.9
tank installations 7.1.6
Dip tubes (sizing) 6.1.5(c), 7.6, Annex H
Discharge lines. See Vent lines and discharge lines
Dispensing devices
breakaway quick-closing coupling 7.20.9
dispensing hose 7.20.9
installation 7.20.1, 7.20.8
location 7.20.1, 7.20.7
manual (deadman) flow control 7.19.1.8
piping systems 7.20.3, 7.20.10, 7.20.11, Figure C.1
protection 7.20.2
safety control valve 7.20.4
signs 7.20.6
Ductwork connections 4.13
January 2010
113
B149.2-10
E
Electrical connections and components
circuits 4.6.2
compliance with codes 4.6.1
switches in areas of leakage 4.10.3
Explosion relief 6.5.10.2, 7.17.3(e), 8.16.1(b)
Explosive mixture 4.7.2
F
Filling plants
container filling locations
building construction 7.17.3
siting 7.17.1
ventilation 7.17.3
container storage 7.14
electrical equipment 7.13, 7.19.5, Table 7.6
fencing 7.15
general requirements
firefighting provisions 7.12.2
indirect heating 7.12.7
lighting 7.12.1
NO SMOKING signs 7.12.3, 7.12.10
rail service 7.18
signs 7.12.10, 7.12.11
tanks
locations 7.12.4, 7.12.5, 7.16, Table 7.5
restrictions 7.12.6
transfer connections 7.17.4
transfer operations 7.12.8, 7.12.9
Flammable vapours 4.7.2
G
Garages
private parking garages 8.17
public parking garages 8.16
repair garages 8.18
H
Hazardous locations 4.7
Hazards created by use or prohibited use 4.5.2
Heat exchangers
commercial and industrial appliances 4.17.3
furnaces
repairs 4.17.2
replacements 4.17.1
Highway vehicles
installation of appliances 11.1.2–11.1.4, 11.1.6, 11.1.8, 11.1.9, 11.7
installation of containers
cylinders 11.3
general 11.1.3, 11.1.7, 11.2
tanks 11.5
installation of equipment 11.1.2, 11.2.2
markings 11.8
114
January 2010
piping, tubing, hose, and fittings 11.6
refuelling 5.2.11
Hose connectors
on vehicles 11.6.2
recommended lengths Annex L
Hydrostatic relief valves
discharge into common header 5.6.2
venting 5.8
where required 5.6.1
I
Ice maintenance equipment 10.8.5
Industrial tractors
filling operations 10.1.4
indoor use 10.1.5, 10.2.2, 10.4.5, 10.8
parking and servicing 10.8
propane fuel tanks 10.2.2
suppliers’ responsibilities 10.1.6
ventilation 10.1.5, 10.1.6
Inspection and examination
containers installed on vehicles 11.2.4
cylinder requalification 6.1.5, Annex D
damaged appliances 4.5.3
tank truck and cargo liner relief valves 8.2.2
tanks installed on vehicles 11.5.17–11.5.19
underground tanks to be installed above ground 7.8.15
used appliances 4.5.4
Installation. See also Highway vehicles; Mobile homes; Outdoor food service units; Recreational vehicles;
Wash-mobiles
certified instructions 4.1.3, 4.1.4
cylinders 6.7, 6.8
hydrostatic relief valves 5.6–5.8
line relief valves 5.5, 5.7, 5.8
locations
hazardous locations 4.7
high altitudes 4.18
rooftops 6.8
pressure regulators 5.4.2, 5.4.3, 5.7, 5.8
propane fuel containers 10.2.4, 10.2.5
propane fuel cylinders 10.2.7
smoking and other sources of ignition 4.8
tank supports 7.11
tanks 7.1.5–7.1.8, 7.1.11, 7.1.14, 7.1.15
Installers
quality of work 4.4.1
responsibilities
compliance with codes 4.3.1
instructions for users 4.3.2
selecting replacement parts 4.3.4
supplying manufacturer's instructions 4.3.3
testing installations 4.3.5, 4.3.6
training 4.4.2
January 2010
115
B149.2-10
L
Leak detection
drain, sewer, or pit 7.12.4
required class of electrical switches 4.10.3
required light 4.10.2
use of a match or other source of ignition prohibited 4.10.1
Lift trucks
indoor use 10.1.5, 10.2.2, 10.4.5, 10.8
parking and servicing 10.8
suppliers’ responsibilities 10.1.6
users’ responsibilities 10.1.7
ventilation 10.1.5, 10.1.6
Line relief valves
settings 5.5
sizing 5.7.3
venting 5.7.2, 5.8.2
where required 5.5
Liquid level gauges
cylinders 6.2
propane engine fuel containers 10.4.5, 10.4.6
tanks 7.6
M
Manifold systems
construction sites 6.5.3.5
consumer tanks 7.10.2
cylinders installed against a building 6.7.7
rooftop installations 6.8
tanks
emergency shut-off valves 7.3.1
installation 7.1.10
Manual (deadman) flow control (motor fuel dispenser) 7.19.1.8
Markings
containers and appliances installed on highway vehicles, mobile homes, outdoor food service units,
recreational vehicles, and wash-mobiles 11.5.9
cylinder delivery vehicles 6.6.7
protective cap for cylinder connection device 6.1.9
tank trucks and cargo liners 8.11
tanks installed on highway vehicles, mobile homes, outdoor food service units, recreational
vehicles, and wash-mobiles 11.5.9
Mobile homes
furnace supply line 11.6.3
installation of appliances
certified appliances 11.7.4
general requirements 11.1.2–11.1.4, 11.1.6, 11.1.8, 11.1.9, 11.7
cylinders 11.3
general requirements 11.1.5, 11.1.7, 11.2
tanks 11.5
installation of equipment 11.1.2
116
January 2010
markings 11.8
O
Outdoor food service units
air supply 11.7.6
cylinders 11.3
tanks 11.5
markings 11.8
P
Parking. See Industrial tractors; Lift trucks; Tank trailers; Tank trucks and cargo liners
Pilot lights 11.1.10, 11.8.2
Piping, tubing, and hose
wash-mobiles
capping supply lines 11.6.12, 11.6.16
copper tubing 11.6.7
defects 11.6.9, 11.6.10
installation 11.6.3–11.6.6, 11.6.8, 11.6.11, 11.6.13, 11.6.17
prohibited repairs 11.6.9
purging 11.6.1
sizing 11.6.1
testing 11.6.1
piping systems — expansion and flexibility Annex F
propane engine fuel 10.3
tank trucks, cargo liners, and tank trailers 8.4
hose and hose connectors 8.4
valves 8.4
underground 7.20.3
Portable food-serving carts 6.5.9
Pressure gauges (tanks) 7.5
Pressure regulators
protection from weather 5.4.2, 5.4.3(b)
single-stage regulator 5.4.3
sizing 5.4.1
venting 5.4.3, 5.7.1
Propane. See also Propane engine fuel
burner port capacities Table J.4
combustion data Table J.2
conversion tables Tables J.12, J.13
number of cylinders required to meet demand Table J.8
odorization 5.1
orifice capacities Table J.5
properties Table J.1
January 2010
117
B149.2-10
quantity required for appliances and services Table J.7
requirements of CAN/CGSB-3.14 4.1.1
size of tank required to meet demand Table J.9
temperature vs. pressure Table J.3
vaporizing capacities Tables J.10, J.11
volume and relative density correction factor Table J.6
Propane engine fuel. See also Industrial tractors; Lift trucks; Stationary engines
engine governor 10.7.3
fuel containers
back check valves 10.4.1
excess-flow valves 10.4.1, 10.4.2
exchange 10.9
installation 10.2.4, 10.2.5, 10.2.9
labelling 10.2.3
liquid level gauge — where prohibited 10.4.5
protection 10.4.3
purging 10.2.1
relief valves 10.4.7, 10.4.8
working pressure 10.2.2
fuel cylinders 10.2.7
fuel flow valve 10.7.2
fuel piping, tubing, hose, and fittings
hydrostatic relief valve 10.5.1
fuel regulators 10.7
fuel tanks
installation 10.2.6
liquid level gauge 10.4.6
vaporizers (converters) 10.6
Propane equipment. See Containers; Cylinders; Hydrostatic relief valves; Line relief valves; Piping, tubing,
and hose; Pressure regulators; Tanks; Vent lines and discharge lines
Protection
appliances 4.19
propane engine fuel containers 10.4.3
remote dispensing devices 7.20.2
tanks
installed on vehicles 11.5.5
posts and guardrails 7.1.14, 7.19.4, Figure E.1
underground installations 7.8.12
Pumps and compressors
in buildings 7.17.2, 7.17.3
on tank trucks and cargo liners 8.3
Purging
air and moisture A.4
anhydrous ammonia A.1, A.2
containers 5.2.8–5.2.10, 5.2.12, Annex A
cylinders 6.4, A.4
piping and tubing for vehicle installations 11.6.1
propane fuel containers 10.2.1
test for ammonia A.3
118
January 2010
R
Rain cap (tank relief valves) 7.2.5, 7.9.4
Readily ignitable materials 5.3.3
Recreational vehicles
appliance shut-off valves 11.6.14
furnace supply line 11.6.3
certified appliances 11.7.4
shut-off valve requirements 11.6.14
cylinders 11.3
tanks 11.5
markings 11.8
Reference publications 2
Refill centres
emergency shut-off means 7.19.1.7
fencing 7.19.1.2
general requirements
firefighting provisions 7.12.2, 7.19.1.6
lighting 7.12.1
locking unattended facilities 7.19.1.4
NO SMOKING signs 7.12.3, 7.12.10
service valve 7.19.1.5
signs 7.12.10, 7.12.11
storage requirements 7.19.1.2
tanks
aggregate capacity 7.19.1.3
locations 7.12.4, 7.12.5, 7.16, Table 7.5
restrictions 7.12.6
transfer connections 7.17.4
transfer operations 7.12.8, 7.12.9
Removal from service (underground tanks) 7.8.16
Replacement parts 4.3.4
Requalification
containers installed on vehicles 11.2.4
cylinders 6.1.5, 6.1.14
tanks installed on vehicles 11.5.17–11.5.19
Retail outlets 6.5.6
S
Safety devices — isolating or bypassing prohibited 4.9
Self-energized pilots 4.16
SI (metric) units 1.4
Signs
cylinder delivery vehicles 6.6.4
cylinder filling locations 7.12.10, 7.12.11
NO SMOKING signs 6.5.2.6, 6.5.7.3, 7.12.3, 7.12.10
propane motor fuel dispensing locations 7.20.6
Smoking and other sources of ignition 4.8
January 2010
119
B149.2-10
Sources of ignition
connecting and disconnecting cylinders 6.5.3.7, 6.5.5.3
cylinders in storage 6.5.1.5, 7.12.7
distance from discharge 5.8.1, 6.7.2
filling and gauging containers 5.2.7, 7.12.7, 7.17.1
purging cylinders 5.2.12
Stationary engines
operation 10.1.2, 10.1.3
users’ responsibilities 10.1.7
zero governor 10.7.3
Storage of containers and cylinders
cleaning and polishing equipment 6.5.7
commercial and industrial sites 6.5.5
construction sites 6.5.3
cylinders
inside 6.5.6, 6.5.7
outside 6.5.1–6.5.5, 6.5.7
filling plants 7.1.4
portable food-serving carts 6.5.9
refill centres 7.19.1.2
retail outlets 6.5.6
warehouses 6.5.6
T
Tank trailers
braking system 8.6.3
electrical equipment 8.5.2
filling 8.12.1, 8.12.2, 8.12.4
lighting
equipment 8.5.1
portable lights 8.13.3
parking
private garage 8.16
prohibited locations 8.14.4
public parking garage 8.15, 8.16.2
restrictions 8.14.3, 8.14.5
repair and servicing
private garage 8.17
repair garage 8.18
tanks
back check valve 8.2.1
relief valve 8.2.2
towing provisions 8.11
used as storage trailer 7.1.9
Tank trucks and cargo liners
braking system 8.6.1, 8.6.2
capacity > 5000 USWG (18 900 L) 7.3.1
chock blocks 8.6.1
drivers’ responsibilities 8.18.2
120
January 2010
electrical equipment 8.5.2
engine fuel 8.8
exhaust systems 8.7
filling 8.12.1–8.12.3
fire extinguishers 8.9
lighting
equipment 8.5.1
portable lights 8.13.3
parking
private garage 8.16
prohibited locations 8.14.4
public parking garage 8.15
restrictions 8.14.3, 8.14.5
pumps and compressors 8.3
repair and servicing
private garage 8.17
repair garage 8.18
required markings 8.10
tanks
back check valve 8.2.1
relief valve 8.2.2
repairs 8.18.3
transfer locations 7.3.1
used as storage tank 7.1.9
Tanks. See also Consumer tanks; Dispensing devices; Filling plants; Refill centres; Underground tanks
back check valves
combination excess-flow/back check valves 7.4.1, 7.4.2
tanks with capacity < 200 lb (90 kg) 7.4.6
where required 7.4.1, 7.4.6
electrical equipment 7.19.5, Table 7.6, Figure G.1
excess-flow valves
combination excess-flow/back check valves 7.4.1, 7.4.2
filling plants and refill centres 7.12
tanks with capacity > 200 lb (90 kg) 7.4.6
use of internal valve as alternative 7.4.4
where not required 7.4.3
where required 7.4.1, 7.4.6, 7.5.2
filling
by volume 7.7.1, 7.7.2
by weight 7.7.3
connections 7.1.11, 7.4.6, 7.4.7
discharge to atmosphere 7.7.4
locations 7.7.5
maximum permitted filling density 7.7.1, 7.7.2, Tables 7.1, 7.2
underground tanks 7.8.7
wash-mobiles
brackets and anchorage 11.5.10–11.5.12
corrosion protection 11.5.16
exterior mounting 11.5.14
January 2010
121
B149.2-10
inspection 11.5.17
labelling 11.5.9
location 11.5.13
markings 11.8.1
mounting in enclosure 11.5.1–11.5.4
protection of fittings 11.5.5, 11.5.15
valves 11.5.6–11.5.8
installation
access 7.1.11
adjacent to drain, sewer, or pit 7.12.4
adjacent to tanks containing flammable/combustible liquids 7.1.7, 7.1.8
beneath electrical transmission lines 7.1.5
diking and grading 7.1.6
distance to open flame 7.1.15
firefighting provisions 7.12.2
flood water 7.11.1
heavily populated areas 7.12.6
painting 7.1.4
prohibited locations 7.1.5, 7.1.7
supports 7.7.6
underground 7.8
welding 7.1.2, 7.1.3
lifting lugs 7.21.2
liquid level gauges 7.6
maximum allowable working pressure 7.1.1
moving tanks not designed for propane transport/delivery 7.21.1
piping systems
dispensing devices 7.20.3, 7.20.10, 7.20.11
shear point 7.3.9
pressure gauges 7.5
protection
guardrails 7.19.4.2, 7.19.4.3, Figures B.1, B.2, E.1
posts 7.19.4.1, 7.19.4.3, 7.20.2, Figures B.1, B.2
relief valves
discharge 7.9
preventing tampering 7.2.3
rain cap 7.2.5
sizing 7.2.1
shut-off valves
filling plants and refill centres 7.12.3
installation 7.3.2–7.3.5, 7.3.7, 7.3.8
use of back check valves as alternative 7.3.3
where required 7.3.1, 7.5.2
skid frame 7.11.5
supports
horizontal tanks, capacity < 2000 USWG (7500 L) 7.11.2
horizontal tanks, capacity > 2000 USWG (7500 L) 7.11.4, 7.11.5
inspection 7.7.6
vertical tanks 7.11.3
ventilated cabinets and enclosures 7.19.3
122
January 2010
TC Specification 2P, 2Q, and 39 cylinders
food service appliances 6.5.9
general requirements 6.1.3, 6.1.4
indoor storage 6.5.6
not refillable 6.4.5
Two-stage regulation Annex K
U
Underground tanks
approvals 7.8.1
bar holes Figure I.1
cathodic protection 7.8.3–7.8.6
connections 7.8.13, 7.8.14
corrosion control monitoring 7.8.7
dielectric isolation 7.8.8
filling 7.8.17
installation 7.8.2, 7.8.9–7.8.11, 7.8.15
locations 7.8.12
protection 7.8.11
relief valve discharge 7.9.2
removal from service 7.8.16
V
Valves
automatic fire-extinguishing systems 4.15
back check valve
propane engine fuel containers 10.4.1
tank trailers, tank trucks, and cargo liners 8.2.1
tanks 7.3.3, 7.4.1, 7.4.2, 7.4.6, 7.4.7
bleed valves 6.2.1, 7.6.3
cylinder valve
installations on vehicles 11.4
protection 6.5.1.7, 6.5.3.3, 6.6.2, 11.4.2
dispensing device safety control valve 7.20.4
excess-flow valve
cylinders used indoors on construction sites 6.5.3.7
installations on vehicles 11.4
proper uses K.3
tanks 7.4.1–7.4.4, 7.4.6, 7.5.2
hydrostatic relief valve
common discharge header 5.6.2
installation 5.6–5.8
propane engine fuel piping systems 10.5.1
venting and discharge 5.8.1–5.8.3
internal valve
as alternative to excess-flow valve 7.4.4
tank trucks and cargo liners 8.2.2
line relief valve
common discharge header 5.7.4
January 2010
123
B149.2-10
installation 5.5, 5.7, 5.8
size 5.7.3
venting and discharge 5.7.2, 5.8.1, 5.8.2
propane engine fuel flow valves 10.7.2
relief valves
bypassing prohibited 4.9
tanks 7.2
shut-off valves
automatic fire-extinguishing systems 4.15.3
bypassing prohibited 4.9
tanks 7.3
vaporizer valves 9.1.6
Vaporizers
direct-fired vaporizers
installation 9
location 9.3.1–9.3.4
indirect vaporizers
installation 9.2.4
piping 9.2.3
requirements 9.2.1, 9.2.2
installation 9.1.1, 9.1.3, 9.1.4, 9.1.9
propane engine fuel vaporizers 10.6
Vapour withdrawal 7.19.1.5
Vent lines and discharge lines
common discharge headers 5.7.4
line relief valves 5.7.2
regulators 5.7.1
terminations 5.8
Ventilation
container filling locations 7.17.3
cylinder cabinets (on vehicles) 11.3.2
indoor use of industrial tractors and lift trucks 10.1.5, 10.1.6
W
Warehouses 6.5.6
Wash-mobiles
air supply 11.7.5
installation of cylinders 11.3
maximum number of cylinders 11.2.5
tanks 11.5
markings 11.8
Welding, cutting, and preheating processes 6.5.4.3
124
January 2010
January 2010
Y
Yard-pound units
as standard 1.4
SI (metric) equivalents 1.4
125
Notes
Notes
Notes
Notes
Notes
Notes
Notes
Notes
Notes
Notes
Notes
R
IM
E
A
AU CAN
DA
DA
PRI
N
TE
NA
I MP
The Canadian Standards Association (CSA) prints its publications on Rolland Enviro100, which contains
100% recycled post-consumer fibre, is EcoLogo and Processed Chlorine Free certified, and was manufactured
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D I N CA
ISBN 978-1-55491-241-4
100%

Propane storage and handling code

Transcription

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