The fresh air intake of the inert gas system ______，A.Prevents the flue gas from falling below 3% content of oxygenB.Allows the inert gas piping to be used for gas freeing the tanksC.Opens when there is excessive vacuum on the deck water sealD.Enables outside air to mix with and cool hot flue gasses
The fresh air intake of the inert gas system ______，
A.Prevents the flue gas from falling below 3% content of oxygen
B.Allows the inert gas piping to be used for gas freeing the tanks
C.Opens when there is excessive vacuum on the deck water seal
D.Enables outside air to mix with and cool hot flue gasses
相关考题：
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
Which method is used to supply inert gas from a flue gas system to the cargo tanks?A.Exhaust gas pressure from the stackB.High capacity fanC.Inert gas compressorD.Natural aspiration
Which of the listed functions is the purpose of a gas scrubber in an inert gas generation system ________．A.Cools the inert gasB.Maintains the oxygen content at 5% by volumeC.Drains off static electricity in the inert gasD.Maintains the water seal on the gas main
After the initial cleaning of flue gas in an inert gas system the gas is passed through what device for final cleaning ________．A.ScrubberB.DemisterC.Deck water sealD.Final filter
The deck water seal of the inert gas system ______．A.Cools the inert gas and prevents soot from entering the cargo tanksB.Acts as an emergency shutdown when inlet pressures exceed the safe working pressureC.Prevents the backflow of hydrocarbon gasses into nonhazardous areasD.Relieves sudden large overpressures in the system
What is the major function of the deck water seal in an inert gas system ________．A.Relieve excessive overpressures in the systemB.Isolate hazardous from nonhazardous areasC.Prevent the flow of inert gas into closed tanksD.Remove any leftover water or soot after the gas has been scrubbed
Which statement about the inert gas system is TRUE ________．A.Boiler soot blowers should never be used when the IG system is operatingB.The boiler will produce the best quality of flue gas for the IG system when the boiler load is very lightC.The boiler will produce the most quantity of flue gas for the IG system when the boiler load is very lightD.Flue gas with excessive oxygen content is de-oxygenated in the scrubber
Which statement is TRUE concerning inert gas systems on tankers ________．A.Flue gases from the ship's boilers are used in some systemsB.The gas is heliumC.Using the system accelerates the rusting of the tanksD.All of the above
单选题Each inert gas system gas main must have an automatic shut down valve at the outlet of the gas production plant. This valve must close automatically upon（）.Acargo pump failureBblower failureCdeck seal low water levelDlow inert gas temperature
单选题How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）ADe-energizes the charged mist effectBMaintains a positive pressure on the vent header to cool the flammable vaporsCInert gas filters out the flammable vapors from the cargo tank spacesDInert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit
单选题Intake air flow from a diesel engine turbocharger is directly proportional to engine（）Aexhaust gas pressureBexhaust gas temperatureCspeedDload
单选题The fresh air intake of the inert gas system（）.Aprevents the flue gas from falling below 3% content of oxygenBallows the inert gas piping to be used for gas freeing the tanksCopens when there is excessive vacuum on the deck water sealDenables outside air to mix with and cool hot flue gasses
单选题After the initial cleaning of fule gas in an inert gas system is passed through what devoce for final cleaning?（）.AScrubberBDemisterCDeck water sealDFinal filter
单选题After the initial cleaning of flue gas in an inert gas system the gas is passed through what device for final cleaning?（）.AScrubberBDemisterCDeck water sealDFinal filter
单选题Air or noncondensable gas is removed from a refrigeration system by a （）Aseparating chamberBsystem of bafflesCpurge valveDvacuum reducing valve
单选题The purpose of inert gas systems aboard tankers is to（）.Aallow sufficient oxygen in the tank to sustain lifeBprevent outside air from entering the tankCprovide more discharge pressureDcomply with pollution regulations
单选题The deck water seal of the inert gas system（）.Acools the inert gas and prevents soot from entering the cargo tanksBacts as an emergency system shutdown when the inlet pressures exceed the safe working pressure in the hazardous zoneCprevents the backflow of hydrocarbon gasses into nonhazardous areasDrelieves sudden large overpressures in the system
单选题An inert gas system is designed to reduce the possibility of tank explosions by（）.Aeliminating sparks and fire in the vicinity of cargo tanksBremoving all hydrocarbon gases from the cargo tanksCblanketing cargo tanks with inert foamDreducing the oxygen concentration below levels necessary for combustion
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?（）AThe tank must be gas freedBThe tank must be ballastedCThe tank must be vented to the atmosphereDThe bypass valve must also be closed
单选题Directional intake ports in diesel engines are used to （）.Areduce air charge turbulenceBinduce air swirlCdeflect hot combustion gas away from the valvesDoppose the effects of piston induced squish
单选题Which method is used to supply inert gas from a flue gas system to the cargo tanks?（）AExhaust gas pressure from the stackBHigh capacity fanCInert gas compressorDNatural aspiration
单选题SOLAS regulations require that the inert gas system shall be capable of delivering inert gas with an oxygen content of not more than what percentage?（）A5%B8%C6%D3%
单选题The purpose of the deck seal in an inert gas system is to prevent（）.Aflammable vapors from entering machinery spaceBflue gas escaping to atmosphereCinert gas escaping to atmosphereDair entering inert gas system
单选题An inert gas system on a tanker should be used to（）.Aprevent the generation of flammable or combustible gas in tanksBblow out cargo lines to prevent the build up of gas concentrationsCdilute tank atmospheres to keep gas concentrations below the lower explosive limitDprevent fires in the pumproom by continually displacing flammable vapors
单选题The component in an inert gas system used for cleaning the gas of solid and sulphur combustion products，while simultaneously cooling the inert gas，is called the（）.AfilterBcoolerCscrubberDpurifier
单选题An inert gas system on a tanker should be used to（）.Aprevent the generation of flammable or combustible gas in tanksBblow out cargo lines to prevent gas concentrationsCdilute tank atmospheres to keep gas concentrations below the lower explosive limitDprevent fires in the pumproom by continually displacing flammable vapors
单选题The deck water seal of the inert gas system（）.Acools the inert gas and prevents soot from entering the cargo tanksBacts as an emergency shutdown when inlet pressures exceed the safe working pressureCprevents the backflow of hydrocarbon gasses into nonhazardous areasDrelieves sudden large overpressures in the system