Code of Federal Regulations (Last Updated: April 5, 2024) |
Title 49 - Transportation |
Subtitle B - Other Regulations Relating to Transportation |
Chapter I - Pipeline and Hazardous Materials Safety Administration, Department of Transportation |
Part 179 - Specifications for Tank Cars |
Subpart D - Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW) |
§ 179.220-4 - Insulation.
Latest version.
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§ 179.220-4 Insulation.
The annular space between the inner container and the outer shell must contain an approved insulation material.
[Amdt. 179-9, 36 FR 21340, Nov. 6, 1971]