§154.1848. Inerting.
46 C.F.R. § 154.1848
The master shall ensure that:
Hold and interbarrier spaces on a vessel with full secondary barriers are inerted so that the oxygen concentration is 8 percent or less by volume when flammable cargoes are carried;
Hold and interbarrier spaces contain only dry air or inert gas on—
A vessel with partial secondary barriers;
A vessel with full secondary barriers when non-flammable cargoes are carried; and
A vessel with refrigerated independent tanks type C;
When cargo tanks containing flammable vapor are to be gas freed, the flammable vapors are purged from the tank by inert gas before air is admitted; and
When gas free cargo tanks are to be filled with a flammable cargo, air is purged from the tank by inert gas until the oxygen concentration in the tank is 8 percent or less by volume before cargo liquid or vapor is introduced.
Inert gas must be supplied from the shore or from the vessel's inert gas system.
Notes, amendments, and revision history
Authority
Authority: 46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.
Source
Source: CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.