GroundRules
46 CFR 151.50-36: -36 Argon or nitrogen.
Where this section sits in the code
- Title 46—Shipping
- CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
- SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES
- PART 151—BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES
- Subpart 151.50—Special Requirements
(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.
Collected 2026-08-27T02:26:22Z. Source file · JSON