The purpose of inert gas systems aboard tank vessels is to ______.A.allow sufficient oxygen in the tank to sustain lifeB.prevent outside air from entering the tankC.provide increase in cargo discharge pressureD.comply with double hull pollution prevention

题目

The purpose of inert gas systems aboard tank vessels is to ______.

A.allow sufficient oxygen in the tank to sustain life

B.prevent outside air from entering the tank

C.provide increase in cargo discharge pressure

D.comply with double hull pollution prevention regulations

相似考题

1.An inert gas system on a tanker should be used to ______.A.prevent the generation of flammable or combustible gas in tanksB.blow out cargo lines to prevent the build up of gas concentrationsC.dilute tank atmospheres to keep gas concentrations below the lower explosive limitD.prevent fires in the pumproom by continually displacing flammable vapors

2.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

3.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

4.How does an inert gas system on a tanker function to prevent explosions in cargo tanks?A.De-energizes the "charged mist" effectB.Maintains a positive pressure on the vent header to cool the flammable vaporsC.Inert gas filters out the flammable vapors from the cargo tank spacesD.Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit

参考答案和解析
正确答案：B
更多“The purpose of inert gas systems aboard tank vessels is to ______.A.allow sufficient oxyge ”相关问题

  • 第1题：

    Which of the listed functions is the purpose of a gas scrubber in an inert gas generation system ________．

    A.Cools the inert gas

    B.Maintains the oxygen content at 5% by volume

    C.Drains off static electricity in the inert gas

    D.Maintains the water seal on the gas main


    正确答案：A

  • 第2题：

    Inerting means ______．

    A.The introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volume

    B.The introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volume

    C.The introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargo

    D.All of the above


    正确答案：D

  • 第3题：

    What is NOT a requirement for the safe and effective use of a crude oil washing system ________．

    A.Strip all tanks and remove the bottom residue

    B.Use an inert gas system while washing tanks

    C.Use portable washing machines to reach areas obscured by structural members in the tanks

    D.Debottom the tank used as the source for the tank cleaning machines


    正确答案：C

  • 第4题：

    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 oxygen

    B.the gas

    C.the inert gas

    D.the hydrocarbon vapour


    正确答案：C

  • 第5题：

    Which statement is TRUE concerning inert gas systems on tankers ________．

    A.Flue gases from the ship's boilers are used in some systems

    B.The gas is helium

    C.Using the system accelerates the rusting of the tanks

    D.All of the above


    正确答案：A

  • 第6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 tanks

    B.removing all hydrocarbon gases from the cargo tanks

    C.blanketing cargo tanks with inert foam

    D.reducing the oxygen concentration below levels necessary for combustion


    正确答案：D
    惰性气体系统用于减少油舱爆炸的可能性是通过降低氧气浓度到低于燃烧必需的水平。

  • 第7题：

    单选题
    A flame screen（）.
    A

    permits the passage of vapor but not of flame

    B

    prevents the passage of flammable vapors

    C

    prevents inert gas from leaving a tank

    D

    permits vapors to exit but not enter a tank


    正确答案： A
    解析： 暂无解析

  • 第8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 tanks

    B

    removing all hydrocarbon gases from the cargo tanks

    C

    blanketing cargo tanks with inert foam

    D

    reducing the oxygen concentration below levels necessary for combustion


    正确答案： C
    解析： 暂无解析

  • 第9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 freed

    B

    The tank must be ballasted

    C

    The tank must be vented to the atmosphere

    D

    The bypass valve must also be closed


    正确答案： A
    解析： 暂无解析

  • 第10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 volume

    B

    the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volume

    C

    the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargo

    D

    All of the above


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    An inert gas system on a tanker should be used to（）.
    A

    prevent the generation of flammable or combustible gas in tanks

    B

    blow out cargo lines to prevent the build up of gas concentrations

    C

    dilute tank atmospheres to keep gas concentrations below the lower explosive limit

    D

    prevent fires in the pumproom by continually displacing flammable vapors


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    The blowers of an inert gas generation system aboard a tanker，will be automatically secured if（）.
    A

    normal water supply at the water seal is lost

    B

    the temperature of the inert gas being delivered to the cargo tanks is more than 150°F

    C

    the cooling water supply to the scrubbers is lost

    D

    all of the above


    正确答案： C
    解析： 暂无解析

  • 第13题：

    ______ shall be provided in every cargo tank and slop tank in accordance with the appropriate Resolutions．

    A.A load on top system

    B.Direct line system

    C.Circle line system

    D.An inert gas system


    正确答案：D

  • 第14题：

    The blowers of an inert gas generation system aboard a tanker，will be automatically secured if ______．

    A.Normal water supply at the water seal is lost

    B.The temperature of the inert gas being delivered to the cargo tanks is more than 150℉

    C.The cooling water supply to the scrubbers is lost

    D.All of the above


    正确答案：D

  • 第15题：

    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 loading

    B.be gas-freed after loading operations

    C.not be maintained in an inert condition

    D.be maintained in an inert condition


    正确答案：D

  • 第16题：

    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 discharging

    B.Gas pressures should be maintained at the highest permissible level throughout the discharging process

    C.High gas pressures may cause pyrophoric oxidation in the tank

    D.High gas pressures may cause loss of suction when stripping


    正确答案：B

  • 第17题：

    A flame screen ______.

    A.permits the passage of vapor but not of flame

    B.prevents the passage of flammable vapor

    C.prevents inert gas from leaving a tank

    D.permits vapors to exit but not enter a tank


    正确答案：A
    防火网允许蒸汽通过，但不允许火焰通过。

  • 第18题：

    单选题
    The purpose of inert gas systems aboard tank vessels is to（）.
    A

    allow sufficient oxygen in the tank to sustain life

    B

    prevent outside air from entering the tank

    C

    provide increase in cargo discharge pressure

    D

    comply with double hull pollution prevention regulations


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    The purpose of inert gas systems aboard tankers is to（）.
    A

    allow sufficient oxygen in the tank to sustain life

    B

    prevent outside air from entering the tank

    C

    provide more discharge pressure

    D

    comply with pollution regulations


    正确答案： D
    解析： 暂无解析

  • 第20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

    dilution

    B

    displacement

    C

    precipitation

    D

    Either A or B


    正确答案： B
    解析： 暂无解析

  • 第21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 flow

    B

    Open the pressure control valve until the pressure increases

    C

    Open the tank isolation valve to the fully open position

    D

    Reduce the pumping rate


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    The purpose of the deck seal in an inert gas system is to prevent（）.
    A

    flammable vapors from entering machinery space

    B

    flue gas escaping to atmosphere

    C

    inert gas escaping to atmosphere

    D

    air entering inert gas system


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    An inert gas system on a tanker should be used to（）.
    A

    prevent the generation of flammable or combustible gas in tanks

    B

    blow out cargo lines to prevent gas concentrations

    C

    dilute tank atmospheres to keep gas concentrations below the lower explosive limit

    D

    prevent fires in the pumproom by continually displacing flammable vapors


    正确答案： D
    解析： 暂无解析

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