46 CFR 151.50-36
§ 151.50-36 Argon or nitrogen.
United States · 46 CFR — Shipping · Status: effective
Cite this
- Citation
- 46 CFR 151.50-36, § 151.50-36 Argon or nitrogen, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/228586
- Permanent ID
ys:prov:228586@1- SHA-256
e000eb2578b8b7be9276a6aa133e3ce9d98ce1a04764490d1bcd02e1096fb04b
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
(a) A cargo tank that contains argon or nitrogen and that has a maximum allowable working pressure of 172 kPa (25 psig) or greater must have one of the following arrangements:
(1) A refrigeration system that keeps the tank pressure below the safety relief valve operating pressure when ambient temperatures are 46 °C (115 °F) air and 32 °C (90 °F) water.
(2) A relief valve or pressure control valve that maintains the tank pressure below the setting of the tank's required safety relief valve in ambient temperatures of 46 °C (115 °F) air and 32 °C (90 °F) water.
(b) A cargo tank with a maximum allowable working pressure of less than 172 kPa (25 psig) is approved by the Commandant (CG-ENG) on a case by case basis.
(c) Section 151.50-30 also applies to the carriage of argon or nitrogen.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.