CSA B149.5:25

Preface This is the seventh edition of CSA B149.5, Installation code for propane fuel systems and containers on motor vehicles. It supersedes the previous editions published in 2020, 2015, 2010, 2005, and 2000 by CSA Group, and in 1995 by the Canadian Gas Association (CGA) as CAN/CGA-B149.5, under the title Installation code for propane fuel systems and tanks on highway vehicles. The following are the major changes to this edition: • Added subclause titles and figure captions for accessibility. • Reorganized subclauses to align with parent clause. • Updated definitions to align with the definitions in CSA B149.1, CSA B149.2, CSA B149.3, and CSA B51, where applicable. • Clarified the use of the terms "container", "tank", and "cylinder". • Removed the use of the term "mounted" in favour of the more specific terms "located", "fastened", or "installed". • Removed the requirement for variable liquid-level gauges as these gauges are no longer in use. • Removed the requirement for measuring the fuel pump heating as this requirement was not testable. • Differentiated uses by adding propane-fuelled vehicle (Clause 5.13). • Added definition of a command stop and requirement in Clause 5.3.5.5. • Clarified the requirement regarding the filling connection location (Clause 5.4.14). • Clarified the requirement regarding cylinders stored in a cabinet or recess (Clause 5.6.5). • Clarified the requirement regarding hose assembly utilized in liquid service (Clause 5.7.3.1). • Clarified wire protection (Clause 5.11.2). • Updated Annex D to allow the use of select components certified to UL/ULC 1337 and removed the allowance components certified to UL 125 or UL 429. This Code was prepared by the Subcommittee on the Installation Code for Propane Fuel Systems and Containers on Motor Vehicles, under the jurisdiction of the Technical Committee on Autogas/DME Transportation and the Strategic Steering Committee on Transportation, and has been formally approved by the Technical Committee and the Interprovincial/Territorial Gas Advisory Council. This Code has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope 1.1 Inclusions This Code applies to a) the installation, servicing, and repair of propane fuel system components and containers on motor vehicles for the provision of motive power; and b) the installation of containers on motor vehicles such as recreational vehicles, outdoor food service units, and wash-mobiles when propane is to be used for fuel purposes (other than motive power). Note: Motor vehicles include cases where propane is used as an engine fuel in other than highway vehicles, such as ice resurfacing machines, lift trucks, lawnmowers, etc. 1.2 Exclusions This Code does not apply to a) vehicles qualified under the Motor Vehicle Safety Regulations*; b) propane used on boats; and c) the installation of appliances. * For confirmation of Motor Vehicle Safety Regulations compliance, you can contact the vehicle manufacturer. 1.3 Fuel composition 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 a mixture of them: propane, propylene, butane (normal butane or isobutane), and butylenes. 1.4 No guarantee 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. 1.5 Units of measurement The values given in SI units are the units of record for the purposes of this Code. The values given in parentheses are for information and comparison only. Note: The conversion of yard/pound to SI is in accordance with Annex F. All pressures are gauge unless otherwise noted. 1.6 Terminology In this Code, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Code; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Code. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.