46 C.F.R. § 153.515 Special requirements for extremely flammable cargoes.
Title 46 - Shipping
When Table 1 refers to this section: (a) An enclosed space containing a cargo tank must have an inerting system that meets the requirements in §153.500 applying to the inert gas system of a containment system; (b) Cargo discharge pumps must be of a type that does not subject the shaft gland to the cargo under pressure or that is submerged; and (c) The cargo tank's relief valve setting must be no less than 21 kPa gauge (approx. 3 psig).
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart B—Design and Equipment
Special Requirements
§ 153.515 Special requirements for extremely flammable cargoes.