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 2 - Design of liquefied hydrogen systems
Section R. 29.7093 - Stationary pumps and compressors
Rule 93. Sections 2-15 to 2-15.5 of the storage and handling of gaseous and Liquefied H2 code are added as follows:
2-15 Stationary pumps and compressors.
2-15.1 Valves shall be installed such that each pump or compressor can be isolated for maintenance. Where pumps or centrifugal compressors are installed for operation in parallel, each discharge line shall be equipped with a check valve to prevent the backflow of liquid from 1 system to the other.
2-15.2 Foundations for cryogenic pumps or compressors shall be designed and constructed to prevent frost heaving.
2-15.3 Operation of all pumps and compressors shall cease when the facility's emergency shutdown device (ESD) system is initiated.
2-15.4 Each pump shall be provided with an adequate vent or relief valve that will prevent over pressurizing of the pump case under normal conditions including the maximum possible rate of cool down.
2-15.5 Vents shall be piped outside of buildings to a point of safe discharge.
