Michigan Administrative Code
Department - Licensing and Regulatory Affairs
Bureau of Fire Services
Storage and Handling of Gaseous and Liquefied Hydrogen Systems
Part 2 - STORAGE AND HANDLING OF GASEOUS HYDROGEN NFPA 50A
Chapter 2 - Design of Gaseous Hydrogen Systems
Section R. 29.7029 - Valves

Rule 29. Sections 2-10 to 2-10.2 of the storage and handling of gaseous and Liquefied H2 code are added as follows:

2-10 Valves.

2-10.1 Shutoff valves shall have a rated service pressure not less than the rated service pressure of the entire system and shall be capable of withstanding a hydrostatic test of at least 3 times the rated service pressure without rupture.

2-10.1.1 Leakage shall not occur when tested at least 1.1 times the rated service pressure, using an inert gas compatible with industry practices.

2-10.2 Valves of a design that allows the valve stem to be removed without removal of the complete valve bonnet or without disassembly of the valve body shall not be used.