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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Safety Advisory: Unauthorized Marking of Compressed Gas Cylinders

Safety advisory notice.

This is to notify the public that RSPA has determined that a number of DOT specification compressed gas cylinders seized by the State of Maine, Department of Environmental Protection (MDEP), may have been marked as requalified in accordance with the HMR when the cylinders were not subjected to testing. During property seizure proceedings, MDEP took possession of numerous cylinders owned by Harry J. Smith, Jr., and his daughter, Dawn Smith, of Meddybemps, Maine, in accordance with a state mandated environmental clean-up of the Smiths' property. RSPA has gathered evidence that suggests the high-pressure DOT specification industrial gas cylinders owned by the Smiths may have been marked, certified and returned to service when the cylinders had not been properly requalified in accordance with the Hazardous Materials Regulations (HMR). A hydrostatic retest and visual inspection are used to verify the structural integrity of compressed gas cylinders. If a hydrostatic retest and visual inspection are not performed within the time period required by the HMR, cylinders with compromised structural integrity may be returned to service when they should be condemned. Extensive property damage, serious personal injury, or death could result from rupture of a cylinder.

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