{"data":{"id":"us/49-cfr-178.338-5","jurisdiction":"us","citation":"49 CFR 178.338-5","heading":"-5 Stiffening rings.","body":"(a) A tank is not required to be provided with stiffening rings, except as prescribed in Section VIII of the ASME Code (IBR, see § 171.7 of this subchapter).\n(b) If a jacket is evacuated, it must be constructed in compliance with § 178.338-1(f). Stiffening rings may be used to meet these requirements.","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 178—SPECIFICATIONS FOR PACKAGINGS","Subpart J—Specifications for Containers for Motor Vehicle Transportation"],"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":"f4cf39dab9f21a8c46d0f47da9c16834b9b145f4dec2d6744defa018cb01e6a5","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-178.338-4","next":"us/49-cfr-178.338-6"},"notice":"GroundRules: Original legal text. Not legal advice."}