CSA B401.1:25

Preface This is the second edition of CSA B401.1, Natural gas vehicle (NGV) maintenance facilities code . It supersedes the first edition of CSA B401.1 published in 2021 and the first edition of CSA B401 published in 2018 under the title Vehicle maintenance facilities code. The following are the major changes to this edition: a) the clause on retroactivity was removed and Clause 4.7 on bulk container major repairs was added; b) addition of clause references in Table 3, CNG major repair areas and LNG major repair areas in the Unclassified section, clarifying the requirements for unclassified equipment and the prohibition of arcing and sparking equipment; c) in Clause B.3.2.2, the record keeping requirement was reduced from 10 years to 7 years; and d) additional information was provided in Clause E.4.2 regarding alternative solutions. CSA Group acknowledges that the development of this Code was made possible, in part, by the financial support of Natural Resources Canada. This Code was prepared by the Subcommittee on Vehicle Maintenance Facilities Code, under the jurisdiction of the Technical Committee on Natural Gas 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 Note: See Annex E for explanatory material. 1.1 Inclusions 1.1.1 Vehicle maintenance This Code applies to the portions of a motor vehicle maintenance facility where natural-gas-fuelled industrial on-road and off-road vehicles and bulk containers are maintained, repaired, or stored during maintenance or repair, including areas and systems ancillary thereto. If a vehicle being maintained has multiple fuels and one of the fuels is compressed natural gas (CNG) or liquefied natural gas (LNG), then the requirements of this Code would apply. Note: See Annex E for explanatory material. 1.1.2 Vehicle parking This Code also contains information on private parking structures where natural-gas-fuelled industrial on-road and off-road vehicles are parked or stored, including areas and systems ancillary thereto. See Annex D. 1.1.3 Parking structure requirements For purposes of this Code, private parking structures have the same requirements as minor repair areas. 1.2 Exclusions The scope of this Code does not include a) indoor or outdoor refuelling operations; b) open parking structures; c) public parking structures of any construction; or d) other fuels used for vehicles. 1.3 Purpose The purpose of this Code is to provide reasonable means to manage the risks associated with the maintenance and repair of vehicles fuelled with CNG or LNG inside motor vehicle maintenance facilities. Note: See Annex E for explanatory material. 1.4 "Fuelling", "refuelling", "park", "store" The terms "fuelling" and "refuelling" are used interchangeably in this Code. The terms "park" and "store" and all derivatives thereof are used interchangeably in this Code. Note: See Annex E for explanatory material. 1.5 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. 1.6 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. Notes: 1) IEEE/ASTM SI 10 or ISO 80000-1 may be used as a guide when converting imperial units to metric units. 2) Less than 1 m will be shown in millimetres. 3) 1 m or more will be shown in metres to the nearest 0.1 m. 4) Feet per inch conversions will be rounded to the nearest full inch using traditional rounding conventions. 5) Pressures will be rounded to the nearest whole value using traditional rounding conventions. 6) Where the word "gallon" is used in this Code, it indicates a U.S. gallon equivalent to 3.785 L water capacity. 1.7 Gauge pressure All references to pressure throughout this Code are to be considered gauge pressures, unless otherwise specified.