scope:

This part of ISO 15500 specifies tests and requirements for therigid fuel line in stainless steel, a compressed natural gas (CNG)fuel system component in accordance with ISO 1127 intended for useon the types of motor vehicles defined in ISO 3833. This part ofISO 15500 is applicable to vehicles (mono-fuel, bi-fuel ordual-fuel applications) using natural gas in accordance with ISO15403. It is not applicable to the following: a) liquefied naturalgas (LNG) fuel system components located upstream of, andincluding, the vaporizer; b) fuel containers; c) stationary gasengines; d) container-mounting hardware; e) electronic fuelmanagement; f) refuelling receptacles.