Michigan Administrative Code
Department - Licensing and Regulatory Affairs
Bureau of Fire Services
Storage and Handling of Gaseous and Liquefied Hydrogen Systems
Part 3 - STORAGE AND HANDLING OF LIQUEFIED HYDROGEN NFPA 50B
Chapter 4 - Design considerations at specific locations
Section R. 29.7107 - Outdoor fill station
Current through Vol. 24-16, September 15, 2024
Rule 107. Sections 4-6 to 4-6.2 of the storage and handling of gaseous and Liquefied H2 code are added as follows:
4-6 Outdoor fill station.
4-6.1 Each line between a liquid storage facility and a dispenser at a fill station shall have a valve that closes when 1 of the following occurs:
(4) The power supply to the dispenser is cut off.
(5) Any emergency shutdown device at the refueling station is activated.
4-6.2 A manual shutoff valve shall be provided at a fill station upstream of the breakaway device specified in section 3-5, where it is readily accessible to the person dispensing H2, unless 1 of the following occurs:
(a) The self-closing valve referred to in section 4-6.1 is located immediately upstream of the dispenser.
(b) The dispenser is equipped with a self-closing valve that closes each time the dispenser is turned to the off position or when an emergency device is activated.
4-6.3 The liquid hydrogen dispenser shall provide a means to safely vent all hydrogen that may become trapped in sections of the dispenser between closed valves in all shut down modes including loss of power.
