scope:

Gives recommendations for the operation of vehicles fuelled with natural gas and operating at a fuel system pressure not exceeding 20 MPa (200 bar) at 15°C. This standard may be applied to higher system pressures, but due regard should then be given to safety aspects such as, ventilation rates, hazardous area requirements and other aspects associated with those higher pressures. It applies to vehicles conforming to a standard under preparation and to refuelling stations conforming to prEN 13638:1999.