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单选题
What action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）
A
The tank must be gas freed
B
The tank must be ballasted
C
The tank must be vented to the atmosphere
D
The bypass valve must also be closed
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更多 “单选题What action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）A The tank must be gas freedB The tank must be ballastedC The tank must be vented to the atmosphereD The bypass valve must also be closed” 相关考题
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考题
单选题By regulation，cargo tank atmosphere must be inert before and during which operation?（）A
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考题
单选题Which action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）A
The tank must be gas freedB
The tank must be ballastedC
The tank must be vented to the atmosphereD
The bypass valve must also be closed
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Cut in another IG fan to increase gas flowB
Open the pressure control valve until the pressure increasesC
Open the tank isolation valve to the fully open positionD
Reduce the pumping rate
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be accompanied by sound signalsB
not result in another close quarters situationC
include a speed changeD
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dock riserB
ship's cargo tanksC
shore tank dischargeD
All of the above
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单选题In setting the valves on a steam-smothering system on a tanker，the master control valve to cargo tanks should be（）.A
open and individual tank valves openB
open and the individual tank valves closedC
closed and the individual tank valves closedD
closed and the individual tank valves open
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单选题Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.A
only when fully loadedB
if one or more tanks are fullC
when transferring cargoD
only when the barge is being towed
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