{"operation":"document","citation":"49 CFR 179.220-10","title":"-10 Welding.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) All joints must be fusion welded in compliance with AAR Specifications for Tank Cars, appendix W (IBR, see § 171.7 of this subchapter). Welding procedures, welders, and fabricators shall be approved.\n\n(b) Radioscopy of the outer shell is not a specification requirement.\n\n(c) Welding is not permi","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-179-220-10.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-179-220-10.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-179-220-10","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-179.220-10","body":"(a) All joints must be fusion welded in compliance with AAR Specifications for Tank Cars, appendix W (IBR, see § 171.7 of this subchapter). Welding procedures, welders, and fabricators shall be approved.\n\n(b) Radioscopy of the outer shell is not a specification requirement.\n\n(c) Welding is not permitted on or to ductile iron or malleable iron fittings.\n\n[Amdt. 179-9, 36 FR 21341, Nov. 6, 1971, as amended at 68 FR 75762, Dec. 31, 2003]","truncated":false,"body_characters":438}