46 CFR 154.459
§ 154.459 General.
United States · 46 CFR — Shipping · Status: effective
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- Citation
- 46 CFR 154.459, § 154.459 General, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/228905
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Full text
(a) Each cargo tank must have a secondary barrier that meets Table 3 and except as allowed in Table 3, the hull must not be the secondary barrier.
(b) If the Commandant (CG-ENG) specially approves an integral tank for a design temperature at atmospheric pressure lower than −10 °C (14 °F), the integral tank must have a complete secondary barrier that meets § 154.460.
(c) If the Commandant (CG-ENG) specially approves a semi-membrane tank under the requirements of an independent tank type B, the semi-membrane tank may have a partial secondary barrier specially approved by the Commandant (CG-ENG).
(d) If Table 3 allows the hull to be a secondary barrier, the vessel's hull must:
(1) Meet §§ 154.605 through 154.630; and
(2) Be designed for the stresses resulting from the design temperature.
Table 3—Secondary Barriers for Tanks
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.