scope:

This International Standard specifies the requirements for lightweight refillable fuel tanks intended for the onboard storage of high-pressure compressed gaseous hydrogen or hydrogen blends on land vehicles. This International Standard is not intended as a specification for fuel tanks used for solid, liquid hydrogen or hybrid cryogenic high-pressure hydrogen storage applications. This International Standard is applicable for fuel tanks of steel, stainless steel, aluminium or non-metallic construction material, using any design or method of manufacture suitable for its specified service conditions. This International Standard applies to the following types of fuel tank designs: - Type 1: metal fuel tanks; - Type 2: hoop-wrapped composite fuel tanks with a metal liner; - Type 3: fully wrapped composite fuel tanks with a metal liner; - Type 4: fully wrapped composite fuel tanks with no metal liner.