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About This Item
Full Description
Preface
This is the first edition of CSA/ANSI HGV 5.2, Compact hydrogen fuelling systems. The CSA Subcommittee reviewed coverage in a variety of standards (CSA Interim Requirement IR 3-18, as well as others from CSA Group and industry hydrogen standards) and current code requirements to develop this new Standard that would focus on coverage for compact hydrogen fuelling systems (cHFS). CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of Natural Resources Canada. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. This Standard was prepared by the Subcommittee on Hydrogen Fuelling Systems, under the jurisdiction of the Technical Committee on Hydrogen 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 specifies the mechanical, electrical, and safety requirements for newly designed and manufactured compact hydrogen fuelling systems (cHFS) and similar integral hydrogen generation, compression, storage, and dispensing systems intended to fuel on- or off-road hydrogen motor vehicles equipped with onboard fuel containers that are compliant with SAE J2579 or UN Global Technical Regulation No. 13.
1.2 Application
The requirements in Clause 1.1 apply to integrated or factory-matched (i.e., modular) hydrogen generating and fuelling equipment that a) is intended for fuelling of hydrogen-powered vehicles only; b) is intended for indoor or outdoor installations; c) has a hydrogen generator within the enclosure or hydrogen pipeline source; d) produces (or consumes if pipeline is used) hydrogen at a rate equal to or less than the limit referenced in NFPA 2, Section 10.7.4.2; e) has a compressor with a single or multiple compression stages; f) is intended to meet the installation fire safety requirements in accordance with NFPA 2 or CAN/BNQ 1784-000; g) is intended for fill pressures of 350 bar and/or 700 bar fuelling; h) is intended for fuel quality that meets or exceeds requirements in SAE J2719; and i) consists of single and/or dual hose fuelling systems.
Note: A cHFS that also supplies oxygen as a product is excluded from the Scope of this Standard.
1.3 Unit of measure
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.
1.4 Standard conditions
Unless otherwise stated, standard conditions are as follows: a) temperature, 15 °C; and b) pressure, 101 kPa.
1.5 Pressure references
Unless otherwise specified, all references to pressure throughout this standard are to be considered gauge pressures.
1.6 Resolution of conflict
In the case of conflict between this Standard and federal, provincial, state, or local requirements, the authority having jurisdiction (AHJ) over requirements take precedence.
1.7 Alternative means
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 need to be evaluated as to their ability to yield levels of safety and performance equivalent to those prescribed by this Standard.
1.8 Terminology
In this Standard, "shall" is used to express a requirement, i.e., a provision that the user shall 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.