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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 49 - Transportation |
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Subtitle B - Other Regulations Relating to Transportation |
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Chapter I - Pipeline and Hazardous Materials Safety Administration, Department of Transportation |
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Part 178 - Specifications for Packagings |
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Subpart H - Specifications for Portable Tanks |
§ 178.255-4 - Closures for manholes and domes.
Latest version.
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§ 178.255-4 Closures for manholes and domes.
(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.
(b) [Reserved]