Sections3Subpart B—Specifications for Inside Containers, and Linings37Subpart C—Specifications for Cylinders27Subpart H—Specifications for Portable Tanks22Subpart J—Specifications for Containers for Motor Vehicle Transportation79Subpart K—Specifications for Packagings for Class 7 (Radioactive) Materials1Subpart L—Non-bulk Performance-Oriented Packaging Standards23Subpart M—Testing of Non-bulk Packagings and Packages10Subpart N—IBC Performance-Oriented Standards10Subpart O—Testing of IBCs14Subpart P—Large Packagings Standards9Subpart Q—Testing of Large Packagings8Subpart R—Flexible Bulk Container Standards5Subpart S—Testing of Flexible Bulk Containers9
Regulationcurrent
49 CFR 178.255-4
-4 Closures for manholes and domes.
Current as of 2026-08-18 Government source
eCFR editorial compilationAuthoritative but unofficial
(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.#
