Mich. Admin. Code R. 29.7090
Current through Vol. 24-22, December 15, 2024
Rule 90. Sections 2-12 to 2-12.2 of the storage and handling of gaseous and Liquefied H2 code are added as follows:
2-12 Valves.
2-12.1 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.
2-12.1.1 Leakage shall not occur when tested at least 1.1 times the rated service pressure, using an inert gas compatible with industry practices.
2-12.2 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.
Mich. Admin. Code R. 29.7090