Mich. Admin. Code R. 29.7102
Rule 102. Sections 4-1 to 4-1.4 are reproduced from NFPA 50B as follows:
4-1 Outdoor locations.
4-1.1 Roadways and yard surfaces located below liquefied hydrogen piping as well as areas under the fill connections and delivery vehicle's uninsulated hydrogen piping from which liquid air can drip shall be constructed of noncombustible materials. For the purposes of this standard, asphaltic and bitumastic paving shall be considered combustible. If expansion joints are used, fillers also shall be of noncombustible materials.
4-1.2 If walls, roofs, weather shelters, or canopies are provided, they shall be constructed of noncombustible or limited-combustible materials.
4-1.3 Electrical wiring and equipment shall comply with section 2-7.
4-1.4 Lighting shall be provided for nighttime transfer operation.
Mich. Admin. Code R. 29.7102