['General Packaging Requirements - Hazmat']

09/24/2025

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General Packaging Requirements - Hazmat - General Packaging Requirements - Hazmat

§179.400-11 Welding.

RegSense General Packaging Requirements - Hazmat Pipeline and Hazardous Materials Safety Administration (PHMSA), DOT CFR Regulations Hazmat Safety Focus Area CFR Section General Packaging Requirements - Hazmat English Transportation USA

(a) Except for closure of openings and a maximum of two circumferential closing joints in the cylindrical portion of the outer jacket, each joint of an inner tank and the outer jacket must be a fusion double welded butt joint.

(b) The closure for openings and the circumferential closing joints in the cylindrical portion of the outer jacket, including head to shell joints, may be a single welded butt joint using a backing strip on the inside of the joint.

(c) Each joint must be welded in accordance with the requirements of AAR Specifications for Tank Cars, appendix W (IBR, see §171.7 of this subchapter).

(d) Each welding procedure, welder, and fabricator must be approved.

[Amdt. 179–32, 48 FR 27708, June 16, 1983, as amended at 68 FR 75763, Dec. 31, 2003]

['General Packaging Requirements - Hazmat']

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