{"data":{"id":"us/49-cfr-179.202-7","jurisdiction":"us","citation":"49 CFR 179.202-7","heading":"-7 Jackets.","body":"The entire thermal protection system must be covered with a metal jacket of a thickness not less than 11 gauge A1011 steel or equivalent; and flashed around all openings so as to be weather tight. A protective coating must be applied to the exterior surface of a carbon steel tank and the inside surface of a carbon steel jacket.","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":"91819707a5511c86ad61d2f8b989637bdb2c3863c960ea29490eec3a608fceba","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-179.202-6","next":"us/49-cfr-179.202-8"},"notice":"GroundRules: Original legal text. Not legal advice."}