1. LawStack
  2. Title 49 - Transportation
  3. Subtitle B - OTHER REGULATIONS RELATING TO TRANSPORTATION
  4. Chapter I - PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
  5. Subchapter C - HAZARDOUS MATERIALS REGULATIONS
  6. Part 179 - SPECIFICATIONS FOR TANK CARS
  7. Subpart D - Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)
  8. 49 CFR § 179.220-4
49 CFR § 179.220-4
Insulation
November 18, 2020
CFR

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]

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§ 179.220-3 Type
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§ 179.220-6 Thickness of plates

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