1. (a) The standards for the equipment installation and inspection of liquefied petroleum gas vehicular fuel systems adopted by NFPA are published in its pamphlet No. 58 and are adopted as the standards for this state.
2. (b) The standards for the equipment installation and inspection of compressed natural gas and liquid natural gas vehicular fuel systems adopted by NFPA are published in its pamphlet No. 52 and are adopted as the standards for this state.
3. (c) The standards for the equipment installation and inspection of hydrogen fuel cell systems and hydrogen in combustion applications adopted by the NFPA are published in its pamphlet No. 2 and are adopted as the standards for this state.

Added at 32 Ok Reg 735, eff 6-30-15 (emergency)

Added at 33 Ok Reg 1735, eff 9-15-16

Amended at 40 Ok Reg 2307, eff 9-15-23