CSA/ANSI NGV 5.3:25

Preface This is the first edition of CSA/ANSI NGV 5.3, Mobile fuelling appliances (MFA) . This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of Natural Resources Canada. This Standard was prepared by the Subcommittee on Mobile Fuelling Appliances for Natural Gas Vehicles, 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. This Standard 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. This Standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. Scope 1.1 General This Standard details the mechanical, physical, and electrical requirements for a newly manufactured movable fuelling appliance that compresses natural gas for vehicles and dispenses directly into a) the vehicle natural gas storage system or delivers to external natural gas storage systems, referred to as mobile fuelling appliances (MFA); or b) the vehicle’s activated carbon adsorbents-based adsorbed natural gas (ANG) fuel storage system, referred to as an MFA. This Standard applies to appliances that incorporate compression and dispensing in the same appliance. Notes: 1) Residential fuelling appliances are addressed in CSA/ANSI NGV 5.1. 2) Vehicle fuelling appliances are addressed in CSA/ANSI NGV 5.2. 3) Devices dedicated only to dispensing fuel into vehicles are addressed in CSA/ANSI NGV 4.1. 1.2 Application This Standard applies to MFAs that are a) intended for natural gas only (see Clause 1.1); b) intended for outdoor or indoor installation; c) intended for ambient temperatures not below −40 °C (−40 °F); d) intended for nominal voltage not exceeding 480 VAC; e) certified as a system with temperature-compensated pressure limits for delivery of fuel for i) direct fuelling of vehicles; ii) fuelling of vehicles from the system’s internal storage; iii) filling of external natural gas storage systems; or iv) any combination of the above; f) equipped with maximum inlet flow rate not exceeding 10 SCFM (17 SCMH); g) for installation in non-residential occupancies; h) intended to meet installation fire safety requirements in accordance with the requirements of the applicable Code; i) for connection to a single vehicle, multiple vehicles, or storage systems; j) intended for installation in non-hazardous locations; k) for connection to a single or multiple vehicle storage system or external storage systems, with no single storage system having a total capacity of less than 80 L water volume; l) intended for installation in accordance with NFPA 52 or CSA B108.1 where not in conflict with the requirements in this document; and m) intended to be mounted on a single trailer approved by the Department of Transportation or Transport Canada 1.3 Pressure references All references to "kPa" and "psig" throughout this Standard are to be considered gauge pressures unless otherwise specified. 1.4 Resolution of conflicts In the case of conflict between this Standard and federal, national, provincial/territorial, state, or local requirements, the requirements of the authority having jurisdiction take precedence. 1.5 Alternate construction The requirements of this Standard are not intended to constrain innovation. When considering fuels, materials, designs, or constructions not specifically dealt with in this Standard, these alternatives may be evaluated as to their ability to yield levels of safety and performance equivalent to those prescribed by this Standard. 1.6 "Fuelling" and "refuelling", and "park" and "store" The terms "fuelling" and "refuelling" are used interchangeably in this Standard. The terms "park" and "store" and all derivatives thereof are used interchangeably in this Standard. 1.7 Terminology In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "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 Standard. 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. 1.8 Units of measurement The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only. Notes: 1) If a value for a measurement and a corresponding value in other units are both specified as a quoted marking requirement, then the first stated unit or both are to be provided. 2) IEEE/ASTM SI 10 or ISO 80000-1 is used as a guide in making metric conversion from inch/pound quantities.