Compressed Gases and Cryogenic Fluids Code - Effective Date: 5/18/2019

Abstract

Applicability.

This code shall apply to the installation, storage, use, and handling of compressed gases and cryogenic fluids in portable and stationary cylinders, containers, equipment, and tanks in all occupancies.

Specific Applications.

This code shall not apply to the following:

(1)* Off-site transportation of materials covered by this code

(2) Storage, use, and handling of radioactive gases in accordance with NFPA 801

(3)* Use and handling of medical compressed gases at health care facilities in accordance with NFPA 99, except as specified in Chapter 17

(4) Systems consisting of cylinders of oxygen and cylinders of fuel gas used for welding and cutting in accordance with NFPA 51

(5)* Flammable gases used as a vehicle fuel when stored on a vehicle

(6)* Storage, use, and handling of liquefied and nonliquefied compressed gases in laboratory work areas in accordance with NFPA 45

(7) Storage, use, and handling of liquefied petroleum gases in accordance with NFPA 58

(8) Storage, use, and handling of compressed gases within closed-cycle refrigeration systems complying with the mechanical code

(9) Liquefied natural gas (LNG) storage at utility plants under NFPA 59A

(10) Compressed natural gas (CNG) and LNG utilized as a vehicle fuel in accordance with NFPA 52

(11)* Compressed hydrogen gas (GH2), or liquefied hydrogen gas (LH2) generated, installed, stored, piped, used, or handled in accordance with NFPA 2 when there are no specific or applicable requirements in NFPA 55

(12) Nonflammable mixtures of ethylene oxide with other chemicals

(13) Ethylene oxide in chambers 10 scf (0.283 Nm3) or less in volume or for containers holding 7.05 oz (200 g) of ethylene oxide or less

NOTICE: An asterisk (*) following the number or letter designating a paragraph indicates that explanatory material on the paragraph can be found in Annex A.