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. 29.7103 - Specific requirements

Rule 103. Sections 4-2 to 4-2.2.3 of the storage and handling of gaseous and Liquefied H2 code are added as follows:

4-2 Specific requirements.

4-2.1 The location of liquefied H2 storage, as determined by the maximum total quantity of liquefied H2, shall be in accordance with table 3-2.1.

4-2.2 Installation of liquefied H2 inside buildings other than detached buildings and gas rooms.

4-2.2.1 More than 1 system of 50 gallons (189.5 liters) or less capacity may be installed in the same room or area outside of special rooms located as allowed in table 3-2.1 and in compliance with section 4-2.1, provided the systems are separated by at least 50 feet (50.2 meters) or by a full height fire-resistive partition having a minimum fire resistance rating of 2 hours is located between the systems.

4-2.2.2 The separation distance between multiple systems of 50 gallons (189.5 liters) or less may bereduced to 25 feet (7.6 meters) in buildings where the space between storage areas is free of combustible materials and protected with a sprinkler system.

4-2.2.3 When sprinkler protection is provided, the area in which the H2 is stored or used shall be protected with a sprinkler system designed to be not less than that required by NFPA 13 for extra hazard group 1 with a minimum design area of 2,500 square feet (762 square meters).