49 C.F.R. § 179.300-10 Postweld heat treatment.
Title 49 - Transportation
After welding is complete, steel tanks and all attachments welded thereto, must be postweld heat treated as a unit in compliance with the requirements of AAR Specifications for Tank Cars, appendix W (IBR, see §171.7 of this subchapter). [68 FR 75763, Dec. 31, 2003]
Title 49: Transportation
PART 179—SPECIFICATIONS FOR TANK CARS
Subpart E—Specifications for Multi-Unit Tank Car Tanks (Classes DOT-106A and 110AW)
§ 179.300-10 Postweld heat treatment.
