{"data":{"id":"us/49-cfr-178.255-4","jurisdiction":"us","citation":"49 CFR 178.255-4","heading":"-4 Closures for manholes and domes.","body":"(a) The manhole cover shall be designed to provide a secure closure of the manhole. All covers, not hinged to the tanks, shall be attached to the outside of the dome by at least 1/8 inch chain or its equivalent. Closures shall be made tight against leakage of vapor and liquid by use of gaskets of suitable material.\n(b) [Reserved]","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 H—Specifications for Portable Tanks"],"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":"05ba6aa7258c7d986bd0182b7edd7380d6c420f78f57a4371dc26ef4e1a070a4","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-178.255-3","next":"us/49-cfr-178.255-5"},"notice":"GroundRules: Original legal text. Not legal advice."}