ISO/TC 197/WG 5 - Gaseous hydrogen land vehicle refuelling connection devices

This document defines the design, safety and operation characteristics of gaseous hydrogen land vehicle (GHLV) refuelling connectors. GHLV refuelling connectors consist of the following components, as applicable: — receptacle and protective cap (mounted on vehicle); — nozzle; — communication hardware. This document is applicable to refuelling connectors which have nominal working pressures or hydrogen service levels up to 70 MPa. This document is not applicable to refuelling connectors dispensing blends of hydrogen with natural gas.

ISO 17268:2012 defines the design, safety and operation characteristics of gaseous hydrogen land vehicle (GHLV) refuelling connectors consisting of, as applicable, a receptacle and a protective cap (mounted on vehicle), and a nozzle. It applies to refuelling connectors which have working pressures of 11 MPa, 25 MPa, 35 MPa and 70 MPa, referred to as H11 - 11 MPa at 15 °C, H25 - 25 MPa at 15 °C, H35 - 35 MPa at 15 °C, H35HF - 35 MPa at 15 °C (high flow for commercial vehicle applications), and H70 - 70 MPa at 15 °C. Nozzles and receptacles that meet the requirements of ISO 17268:2012 will only allow GHLVs to be filled by fuelling stations dispensing hydrogen with nominal working pressures equal to or lower than the vehicle fuel system working pressure. They will not allow GHLV to be filled by fuelling stations dispensing blends of hydrogen with natural gas. Refuelling connectors dispensing blends of hydrogen with natural gas are excluded from the scope of ISO 17268:2012.

ISO 17268:2006 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); and Nozzle. ISO 17268:2006 applies to devices which have working pressures of 25 MPa and 35 MPa, hereinafter referred to as the following: H25 - 25 MPa at 15 °C H35 - 35 MPa at 15 °C ISO 17268:2006 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.