scope:

This International Standard applies to design, safety and operation verification of Compressed Hydrogen Surface Vehicle (CHSV) refuelling connection devices hereinafter referred to as nozzle and receptacle. CHSV Refuelling nozzles and receptacles consist of the following components, as applicable. - Receptacle and protective cap (mounted on vehicle); - Nozzle. This International Standard applies to devices which have working pressures of 25 MPa and 35 MPa, hereinafter referred to in this International Standard as the following: - H25;25 MPa at 15 °C - H35;35 MPa at 15 °C. This International Standard applies to nozzles and receptacles which (1) prevent hydrogen fuelled vehicles from being refuelled by dispenser stations with working pressures higher than the vehicle; (2) allow hydrogen vehicles to be refuelled by dispenser stations with working pressures equal to or lower than the vehicle fuel system working pressure; (3) prevent hydrogen fuelled vehicles from being refuelled by other compressed gases dispensing stations; and (4) prevent other gaseous fuelled vehicles from being refuelled by hydrogen dispensing stations. All dimensions used in this document are in metric units [International System of Units (SI)]. For the purposes of this document, compressed hydrogen gas meeting the requirements of ISO 14687 is to be used. All references to pressures (MPa) throughout this document are considered gauge pressures unless otherwise specified. All test procedures listed in this document are design verification test procedures unless otherwise noted. All products are to pass all tests to be considered