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['General Packaging Requirements - Hazmat']
['General Packaging Requirements - Hazmat']
06/23/2022
(a) 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).
(b) For aluminum tanks, postweld heat treatment is prohibited.
(c) Tank and welded attachments, fabricated from ASTM A 240/A 240M (IBR, see �171.7 of this subchapter) Type 304L or Type 316L materials do not require postweld heat treatment, but these materials do require a corrosion resistance test as specified in �179.100-7(c)(2).
[Amdt. 179�10, 36 FR 21345, Nov. 6, 1971, as amended by Amdt. 179�47, 58 FR 50238, Sept. 24, 1993; Amdt. 179�52, 61 FR 28679, June 5, 1996; 67 FR 51660, Aug. 8, 2002; 68 FR 75758 and 75759, Dec. 31, 2003]
['General Packaging Requirements - Hazmat']
['General Packaging Requirements - Hazmat']
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