Subpart A—Introduction, Approvals and Reports8Subpart B—General Design Requirements11Subpart C—Specifications for Pressure Tank Car Tanks (Classes DOT-105, 109, 112, 114 and 120)31Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)69Subpart E—Specifications for Multi-Unit Tank Car Tanks (Classes DOT-106A and 110AW)20Subpart F—Specification for Cryogenic Liquid Tank Car Tanks and Seamless Steel Tanks (Classes DOT-113 and 107A)44
Regulationcurrent
49 CFR 179.201-11
-11 Insulation.
Current as of 2026-08-18 Government source
eCFR editorial compilationAuthoritative but unofficial
(a)Insulation shall be of sufficient thickness so that the thermal conductance at 60 °F. is not more than 0.075 Btu per hour, per square foot, per degree F. temperature differential.#
RegulusPipeline research