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Title 46: Shipping
CHAPTER I: COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
SUBCHAPTER O: CERTAIN BULK DANGEROUS CARGOES
PART 153: SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart C: Operations
: Cargo Transfer Procedures
153.966 - Discharge by liquid displacement.
The person in charge of cargo transfer may not authorize cargo discharge by liquid displacement unless the liquid supply line to the tank has:
(a) A safety relief or pressure reducing valve set to operate at no more than 80 percent of the tank's relief valve setting; and
(b) A manual control valve between the tank and the supply line's safety relief valve or pressure reducing valve.
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