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. 29.7028 - Pressure regulators

Rule 28. Sections 2-9 to 2-9.3 of the storage and handling of gaseous and Liquefied H2 code are added as follows:

2-9 Pressure regulators.

2-9.1 A pressure regulator inlet and each chamber shall be designed for its service pressure with a safety factor of at least 3.

2-9.2 Pressure chambers shall provide for overpressure relief, if required.

2-9.3 Regulators shall be designed, installed, or protected so that their operation is not affected by freezing rain, sleet, snow, ice, mud, insects, or debris. Regulator protection may be integral with the regulator.