Mich. Admin. Code R. 29.7108
Rule 108. Section 5-1is reproduced from NFPA 50B, and sections 5-1.1 to 5-1.9 of the storage and handling of gaseous and Liquefied H2 code are added as follows:
5-1 Operation. For installations that require any operation of equipment by the user, instructions shall be maintained at operating locations.
5-1.1 Where an overpressure incident that results in operation of the overpressure protection system of the dispenser occurs, the dispenser pressure control system shall be examined and certified by a qualified operator prior to being returned to service.
5-1.2 Liquefied H2 fueling facilities shall be designed so that, in the event of a power failure, the system shall go into fail-safe condition.
5-1.3 The maximum delivery pressure at the vehicle tank inlet shall not exceed the maximum allowable pressure of the vehicle fuel tanks.
5-1.4 Hose and arms shall be equipped with a shutoff valve at the fuel end and a breakaway device that meets the requirements of section 3-5 to minimize release of liquid and vapor in the event that a vehicle pulls away while the hose remains connected. Such a device shall be installed and maintained in accordance with the manufacturer's instructions.
5-1.5 When not in use, hose shall be secured to protect it from damage.
5-1.6 Where a hose or arm of nominal 3 inches (7.62 centimeters) diameter or larger is used for liquid transfer or where 1 of nominal 4 inches (10.16 centimeters) diameter or larger is used for vapor transfer, an emergency shutoff valve shall be installed in the piping of the transfer system within 10 feet (3.1 meters) from the nearest end of the hose or arm.
5-1.6.1 Where either a liquid or vapor line has 2 or more legs, an emergency shutoff valve shall be installed either in each leg or in the line before the legs.
5-1.7 Bleed or vent connections shall be provided so that loading arms and hose can be drained and depressurized prior to disconnection, if necessary. These bleed or vent connections shall lead to a safe point of discharge.
5-1.8 A fueling connector and mating vehicle receptacle shall be used for reliable, safe, and secure transfer of liquefied or gaseous H2 to or from the vehicle with minimal leakage.
5-1.8.1 The fueling connector either shall be equipped with an interlock device that prevents release while the line is open or shall have self-closing ends that automatically close upon disconnection.
5-1.9 The transfer of liquefied H2 into vehicular onboard fuel supply containers shall be performed in accordance with the manufacturer's instructions. The dispenser manufacturer's instructions shall be posted at the dispensing device.
Mich. Admin. Code R. 29.7108