49 C.F.R. § 178.270-1 Specification requirements for IM 101 and IM 102 steel portable tanks.
Title 49 - Transportation
(a) Each IM portable tank must meet the requirements of this section in addition to the requirements of §178.271 (IM 101) or §178.272 (IM 102). These requirements apply to IM portable tanks of diameters no greater than 2438 mm (96 inches) that are designed to carry liquids having a vapor pressure of less than 2.97 bar-absolute (43 psia) at a temperature of 50 °C (122 °F). (b) [Reserved] [Amdt. 178–65, 46 FR 9895, Jan. 29, 1981]
Title 49: Transportation
PART 178—SPECIFICATIONS FOR PACKAGINGS
Subpart H—Specifications for Portable Tanks
§ 178.270-1 Specification requirements for IM 101 and IM 102 steel portable tanks.

