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Title 49 Part 179 → Subpart C → §179.100-10

Title 49 → Subtitle B → Chapter I → Subchapter C → Part 179 → Subpart C → §179.100-10

Electronic Code of Federal Regulations e-CFR

Title 49 Part 179 → Subpart C → §179.100-10

e-CFR data is current as of November 13, 2019

Title 49Subtitle BChapter ISubchapter CPart 179Subpart C → §179.100-10


Title 49: Transportation
PART 179—SPECIFICATIONS FOR TANK CARS
Subpart C—Specifications for Pressure Tank Car Tanks (Classes DOT-105, 109, 112, 114 and 120)


§179.100-10   Postweld heat treatment.

(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, 75759, Dec. 31, 2003]


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