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NIOSH Conformity Assessment Interpretation Notice										Related Pages
										**Subject:** NIOSH acceptance of breathing gas cylinders marked in accordance with 49 C.F.R. Part 178 and ISO 11119-2NIOSH CA 2019-1017
May 2019
1 – SUMMARY
Pursuant to 42 C.F.R. Part 84 (see § 84.81(a)), NIOSH requires that compressed breathing gas and liquefied breathing gas containers (cylinders) must meet minimum requirements of the Department of Transportation (DOT) for interstate shipment of such containers when fully charged. Cylinders conforming to International Organization for Standardization (ISO) 11119-2, *Gas cylinders of composite construction – Specification and test methods – Part 2: Fully wrapped fiber reinforced composite gas cylinders with load-sharing liner*s and bearing a DOT competent authority approval are considered to be in compliance with DOT regulations for transportation to, from, and within the United States.
**NIOSH considers cylinders originating in Canada (CAN) that are in compliance with DOT regulations to be in compliance with the requirements in 42 C.F.R. Part 84**2 – AUTHORITY
Approval of Respiratory Protective Devices, 42 C.F.R. Part 84external icon3 – REFERENCES
Approval of Respiratory Protective Devices, 42 C.F.R. Part 84external icon
General Information, Regulations, and Definitions, 49 C.F.R. Part 171external icon
Specifications for Packaging’s, 49 C.F.R. Part 178external iconNIOSH acceptance of breathing gas cylinders marked in accordance with 49 C.F.R. Part 178 and ISO 11119-2pdf icon [PDF – 164 KB]
							
					
						Page last reviewed:  May 17, 2019					Content source: 	National Institute for Occupational Safety and Health homeNPPTL
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