Hazardous Materials: Use of DOT Specification 39 Cylinders for Liquefied Flammable Compressed Gas
Safety advisory notice.
PHMSA is issuing this safety advisory notice to inform offerors and users of DOT Specification 39 (DOT-39) cylinders that DOT- 39 cylinders with an internal volume exceeding 75 cubic inches (in\3\) (1.23 L) should not be filled with liquefied flammable compressed gas. PHMSA maintains filling or transporting DOT-39 cylinders with an internal volume exceeding 75 in\3\ (1.23 L) is not safe.
81 FR 90061