49 CFR 178.337-6
§ 178.337-6 Closure for manhole.
United States · 49 CFR — Transportation · Status: effective
Cite this
- Citation
- 49 CFR 178.337-6, § 178.337-6 Closure for manhole, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/256506
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Full text
(a) Each cargo tank marked or certified after April 21, 1994, must be provided with a manhole conforming to paragraph UG-46(g)(1) and other applicable requirements in Section VIII of the ASME Code (IBR, see § 171.7 of this subchapter), except that a cargo tank constructed of NQT steel having a capacity of 3,500 water gallons or less may be provided with an inspection opening conforming to paragraph UG-46 and other applicable requirements of the ASME Code instead of a manhole.
(b) The manhole assembly of cargo tanks constructed after June 30, 1979, may not be located on the front head of the cargo tank.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.