171.25—Additional requirements for the use of the IMDG Code.

(a) A hazardous material may be offered for transportation or transported to, from or within the United States by vessel, and by motor carrier and rail in accordance with the IMDG Code (IBR, see § 171.7 ), as authorized in § 171.22, provided all or part of the movement is by vessel. Such shipments must conform to the requirements in § 171.22, as applicable, and this section.
(1) Unless otherwise excepted, a shipment must conform to the requirements in part 176 of this subchapter. For transportation by rail or highway prior to or subsequent to transportation by vessel, a shipment must conform to the applicable requirements of parts 174 and 177 respectively, of this subchapter, and the motor vehicle or rail car must be placarded in accordance with subpart F of part 172 of this subchapter. When a hazardous material regulated by this subchapter for transportation by highway is transported by motor vehicle on a public highway or by rail under the provisions of subpart C of part 171, the segregation requirements of Part 7, Chapter 7.2 of the IMDG Code are authorized.
(3) Notwithstanding § 171.25(d)(1), except for portable tanks, cargo tanks, and tank cars transporting cryogenic liquids before February 13, 2009. Effective February 13, 2009, portable tanks, cargo tanks, and tank cars containing cryogenic liquids, which are transported by a vessel passing through the United States in the course of being shipped between locations outside of the United States must be stowed “on deck” regardless of the stowage authorized in the IMDG Code. Cargo tanks or tank cars containing cryogenic liquids may be stowed one deck below the weather deck when transported on a trailership or trainship that is unable to provide “on deck” stowage because of the vessel's design. Tank cars must be Class DOT-113 or AAR-204W tank cars. Portable tanks, cargo tanks, and tank cars containing cryogenic liquids that are in transportation and stowed below deck on or before February 13, 2009, may continue to be transported to their final destination.
[72 FR 25172, May 3, 2007, as amended at 72 FR 44847, Aug. 9, 2007; 73 FR 57004, Oct. 1, 2008; 74 FR 2233, Jan. 14, 2009]