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By regulation，cargo tank atmosphere must be inert before and during which operation ________．
A.Stripping
B.Loading
C.Cleaning
D.All of the above
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更多 “ By regulation，cargo tank atmosphere must be inert before and during which operation ________．A.StrippingB.LoadingC.CleaningD.All of the above ” 相关考题
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A cargo tank that is initially gas freed，can be inerted by introducing inert gas by a process known as ______.A.dilutionB.displacementC.precipitationD.Either A or B
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Which statement(s) is/are TRUE concerning crane cargo operations?A.Do not exceed rated load capacity of crane and container spreader or slingsB.During any cargo handling operation，the safety of personnel is paramountC.Cargo handlers must be outfitted with adequate protection from personal injuryD.All the above
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You are discharging cargo and the inert gas system is in operation to inert the tanks. The pressure in a tank being discharged starts to drop below the allowable limit. What action should you take?A.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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Which operation may cause the pressure in an inert tank to fall below the prescribed limits ________．A.LoadingB.DischargingC.Crude oil washingD.Steaming tanks
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______ shall be provided in every cargo tank and slop tank in accordance with the appropriate Resolutions．A.A load on top systemB.Direct line systemC.Circle line systemD.An inert gas system
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Inerting means ______．A.The introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeB.The introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeC.The introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargoD.All of the above
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What is the purpose of pressure-vacuum relief valves ________．A.Regulation of discharge pressure from cargo pumpsB.Maintaining constant velocity in cargo linesC.Regulation of suction head on cargo pumpsD.To maintain a tank or void at atmospheric pressure
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When a non-volatile cargo is carried in a tank that has not been previously gas freed，then that tank shall ______．A.be purged with hydrocarbon gas prior to loadingB.be gas-freed after loading operationsC.not be maintained in an inert conditionD.be maintained in an inert condition
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When a tank is to be gas freed after washing，the concentration of hydrocarbon vapour should be reduced by purging the inerted cargo tank with ______．A.the oxygenB.the gasC.the inert gasD.the hydrocarbon vapour
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Which statement about inert gas pressures in a cargo tank is TRUE ________．A.The pressures of the inert gas in the tank may create excessive pressure at the pump while dischargingB.Gas pressures should be maintained at the highest permissible level throughout the discharging processC.High gas pressures may cause pyrophoric oxidation in the tankD.High gas pressures may cause loss of suction when stripping
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Which statement is TRUE concerning cargo hose on tank barges ________．A.Cargo hose must be able to withstand the shut-off head plus the static head of the cargo pumpB.Cargo hose must be able to withstand the static head of the cargo pump but no less than 100 psiC.Cargo hose must be able to withstand the shut-off head less the static head of the cargo pump but no less than 100 psiD.Cargo hose must be able to withstand at least 150 psi
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You are planning to use the crude oil washing system on your tanker．What is required to prevent electrostatic buildup in the tanks ________．A.The portable machines should be set at the proper drop for the first wash before the fixed machines are usedB.The tank used as the source for the tank cleaning machines should be debottomed for at least one meterC.The inert gas system must reduce the oxygen content in the tank to at least 18%D.The fixed machines must be operated simultaneously with the portable machines to equalize the electrostatic potential
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Your tanker is carrying a cargo of styrene．Which of the following is NOT a requirement for carriage of this cargo ________．A.P/V valves with galvanized parts must be replacedB.Authorization to carry styrene must be endorsed on the Certificate of InspectionC.You must have a Certificate of Inhibition provided by the shipperD.The cargo tank heating coils must be blanked off
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An inert gas system is designed to reduce the possibility of tank explosions by ______.A.eliminating sparks and fire in the vicinity of cargo tanksB.removing all hydrocarbon gases from the cargo tanksC.blanketing cargo tanks with inert foamD.reducing the oxygen concentration below levels necessary for combustion
考题
By regulation，cargo tanks must be inert before and during what operation?A.StrippingB.LoadingC.CleaningD.Crude oil washing
考题
单选题When checking the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery，the atmosphere must be sampled（）.A
one meter from the tank bottom and one meter below the tank topB
one half the ullage of the tank and one meter below the tank topC
one half the ullage of the tank and one meter above the tank bottomD
at three meter intervals from the tank top
考题
单选题An inert gas system is designed to reduce the possibility of tank explosions by（）.A
eliminating sparks and fire in the vicinity of cargo tanksB
removing all hydrocarbon gases from the cargo tanksC
blanketing cargo tanks with inert foamD
reducing the oxygen concentration below levels necessary for combustion
考题
单选题A cargo tank that is initially gas freed，can be inerted by introducing inert gas by a process known as（）.A
dilutionB
displacementC
precipitationD
Either A or B
考题
单选题The temperature of the fuel oil received during bunkering operation is critical in determining the （）A
expansion space to leave in a tankB
flash point at which the fuel will burnC
temperature to which the fuel must be heatedD
rate at which the fuel can be pumped during transfer operations
考题
单选题By regulation，cargo tank atmosphere must be inert before and during which operation?（）A
StrippingB
LoadingC
CleaningD
All of the above
考题
单选题By regulation，cargo tanks must be inert before and during what operation?（）.A
StrippingB
LoadingC
CleaningD
Crude oil washing
考题
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
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
考题
单选题You are discharging cargo and the inert gas system is in operation to inert the tanks. The pressure in a tank being discharged starts to drop below the allowable limit. What action should you take? （）A
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
考题
单选题Inerting means（）.A
the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeB
the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeC
the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargoD
All of the above
考题
单选题The combined fan discharge rate in an inert gas system is related to the（）.A
shoreside loading rateB
maximum cargo pump discharge rateC
boiler forced draft fan rateD
size of the largest cargo tank
考题
单选题Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.A
LoadingB
DischargingC
Crude oil washingD
Steaming tanks
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