46 CFR 153.406
§ 153.406 Standards for containment systems having required restricted gauges.
United States · 46 CFR — Shipping · Status: effective
Cite this
- Citation
- 46 CFR 153.406, § 153.406 Standards for containment systems having required restricted gauges, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/228690
- Permanent ID
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Full text
When Table 1 requires a cargo's containment system to have a restricted gauge, the containment system must have:
(a) A closed gauging system; or
(b) A system that has:
(1) A restricted gauge (e.g., a sounding tube) with an orifice diameter not exceeding 20 cm (approx. 7.8 in.);
(2) A permanently attached gauge cover that is vapor tight when in place; and
(3) A venting system that has either:
(i) Lock open PV valves; or
(ii) Valved bypasses around the PV valves.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.