CSA/ANSI HGV 4.2:22

1 Scope 1.1 General 1.1.1 Inclusions This Standard specifies requirements for materials, design, manufacture, and testing of hoses and hose assemblies used for dispensing compressed gaseous hydrogen to vehicles. 1.1.2 Applicability of this Standard This Standard applies to hose assemblies used for connecting compressed gaseous hydrogen dispensers to fuelling nozzles and includes hose assemblies with integrated vent hoses. 1.1.3 Exclusions This Standard does not apply to a) hoses and hose assemblies used as part of vehicle on-board fuel storage systems; b) bulk storage transfer; or c) flexible metal hoses. 1.2 New and historical designs This Standard is intended for new hose assembly designs and existing designs made with new materials. It is not intended for existing hose designs with history of use, hoses made of existing materials with history of use, or hoses qualified by industry-recognized organizations (e.g., ASME, CGA, MSS, and SAE) for use in compressed gaseous hydrogen applications. Note: The exclusions in this Clause do not preclude manufacturers from using this Standard for certification purposes for existing hoses and hose assemblies with history of use. 1.3 Precedence of requirements and conflicts 1.3.1 Precedence of requirements Application-specific standards supersede the requirements of this Standard. 1.3.2 Conflicts In case of conflict between this Standard and federal, provincial, state, or local requirements, the governmental requirements take precedence. 1.4 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. February 2022 © 2021 CSA America Standards Inc./ © 2021 Canadian Standards Association 16 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. 1.5 Units 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. Unless otherwise stated, all references to pressure throughout this Standard are gauge pressures.