![]() |
Code of Federal Regulations (Last Updated: July 5, 2024) |
![]() |
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 |
§ 151.50-36 - Argon or nitrogen.
-
§ 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]