{"data":{"id":"us/49-cfr-179.202-6","jurisdiction":"us","citation":"49 CFR 179.202-6","heading":"-6 Thermal protection system.","body":"The DOT Specification 117 tank car must have a thermal protection system. The thermal protection system must:\n(a) Conform to § 179.18 of this part;\n(b) Be equipped with a thermal protection blanket with at least 1/2-inch-thick material that meets § 179.18(c) of this part; and\n(c) Include a reclosing pressure relief device in accordance with § 173.31 of this subchapter.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—HAZARDOUS MATERIALS REGULATIONS","PART 179—SPECIFICATIONS FOR TANK CARS","Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"66cc4c1437f2223758a6c01be5f8a22f1e2ec39c36f716e0501dedf678ef42d2","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-179.202-5","next":"us/49-cfr-179.202-7"},"notice":"GroundRules: Original legal text. Not legal advice."}