This subchapter applies to the design, construction, installation, and operation of cylinders, pressure vessels, compression equipment, and associated equipment used for storage and dispensing of compressed natural gas (CNG) and/or hydrogen as an engine fuel or for use with any hydrogen fuel cell vehicle in fleet and automatic dispensing operations.

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