{"operation":"document","citation":"49 CFR 179.400-6","title":"-6 Bursting and buckling pressure.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) [Reserved]\n\n(b) The outer jacket of the required evacuated insulation system must be designed in accordance with § 179.400-8(d) and in addition must comply with the design loads specified in Section 6.2 of the AAR Specifications for Tank Cars (IBR, see § 171.7 of this subchapter). The designs an","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-179-400-6.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-179-400-6.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-179-400-6","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-179.400-6","body":"(a) [Reserved]\n\n(b) The outer jacket of the required evacuated insulation system must be designed in accordance with § 179.400-8(d) and in addition must comply with the design loads specified in Section 6.2 of the AAR Specifications for Tank Cars (IBR, see § 171.7 of this subchapter). The designs and calculations must provide for the loadings transferred to the outer jacket through the support system.\n\n[Amdt. 179-32, 48 FR 27708, June 16, 1983, as amended by Amdt. 179-51, 61 FR 18934, Apr. 29, 1996; 65 FR 58632, Sept. 29, 2000; 68 FR 75763, Dec. 31, 2003]","truncated":false,"body_characters":561}