46 CFR 154.703

§ 154.703 Methane (LNG).

United States · 46 CFR — Shipping · Status: effective

Cite this

Citation: 46 CFR 154.703, § 154.703 Methane (LNG), United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/228955
Permanent ID: ys:prov:228955@1
SHA-256: 67f22d71ae95435bed14b65e09b46c241d5b0b447d40aca719669097390d7a5d

The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.

Full text

Unless a cargo tank carrying methane (LNG) can withstand the pressure build up due to boil-off for 21 days, the pressure in the cargo tank must be maintained below the set pressure of the safety relief valve for at least 21 days by: (a) A refrigeration system that meets § 154.702; (b) A waste heat or catalytic furnace that burns boil-off gas, and: (1) Maintains the stack exhaust temperature below 535 °C (995 °F); (2) Exhibits no visible flame; and (3) Is specially approved by the Commandant (CG-OES); (c) Boilers, inert gas generators, and combustion engines in the main propelling machinery space that use boil-off gas as fuel; or (d) Equipment for services, other than those under paragraph (c) of this section, that use boil-off gas as fuel and that are located: (1) In the main propelling machinery space; or (2) a space specially approved by the Commandant (CG-OES).

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.