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Electronic Code of Federal Regulations

e-CFR data is current as of December 5, 2019

Title 46Chapter ISubchapter OPart 151Subpart 151.50 → §151.50-36


Title 46: Shipping
PART 151—BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES
Subpart 151.50—Special Requirements


§151.50-36   Argon or nitrogen.

(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.

[CGD 88-100, 54 FR 40040, Sept. 29, 1989]

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