单选题What is used to test a tank for oxygen content?（）ACombustible gas indicatorBVapor indicatorCAtmosphere analyzer kitDNone of the above
单选题
What is used to test a tank for oxygen content?（）
A
Combustible gas indicator
B
Vapor indicator
C
Atmosphere analyzer kit
D
None of the above
参考解析
解析：
暂无解析
相关考题：
What is used to view status messages sent to a file named "test" as they are sent?() A.monitor start testB.show log testC.view log testD.show test realtime
When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery，check it ______.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 to the bottom
Why is gas-freeing rarely required for LPG cargo tanks?A.LPG is compatible with all cargosB.LPG's high oxygen content makes it nonvolatileC.Cargo tanks are inspected less frequently than on oil tankersD.The cargo tanks are used for one type of cargo only
While testing a cargo tank，your oxygen indicator reads 25% oxygen in the tank. You would then ______.A.enter the tank safelyB.suspect the accuracy of the readingC.ventilate the tankD.test for nitrogen
Which statement about entry into a space that has been sealed for a long time is TRUE ________．A.A tank that has been used to carry hazardous liquids should be tested for oxygen content，toxicity，and explosive gasesB.You can safely enter the space without a breathing apparatus if the oxygen content exceeds 14%C.The natural ventilation through the installed vents is sufficient to provide the proper oxygen contentD.The heat of the sun on upper ballast tanks，such as in a bulk carrier，may generate carbon monoxide
What is used to test a tank for oxygen content ________．A.Combustible gas indicatorB.Vapor indicatorC.Atmosphere analyzer kitD.None of the above
Which statement about entering into a tank which has been sealed for a long time is TRUE ________．A.The tank should be tested only once to ensure the oxygen content is at least 14% before entryB.The tank must be tested at frequent intervals to ensure that hazardous gasses have not regeneratedC.The tank need not be tested for oxygen content if it is ventilated for more than 24 hoursD.If the oxygen content tests at less than 12% you should wear an approved gas mask
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
What best describes for how long a gas-free test is good ________．A.For as long as is indicated on the gas-free certificateB.For the instant that it is madeC.Until valves in line with the tank or compartment are reopenedD.Until changes in temperature or pressure affect the vapor content in the space
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 residueB.Use an inert gas system while washing tanksC.Use portable washing machines to reach areas obscured by structural members in the tanksD.Debottom the tank used as the source for the tank cleaning machines
You are planning to use a crude oil washing system．What precaution must be taken with the tank as the source for the washing machines ________．A.It must be debottomed and the level lowered by at least one meterB.The oil in the source tank must be sampled for compatibilityC.The source tank must have been crude oil washed at least once in the past 150 daysD.The inert gas system must lower the oxygen content to a maximum of 12% oxygen in the tank
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
What is a cofferdam ________．A.Tube fitted to an ullage holeB.Area the product is loaded intoC.Void or empty space separating two tanksD.Opening in the deck used for cleaning a tank
Deficient oxygen content inside a chain locker can be detected with ______.A.litmus paperB.a combustible gas indicatorC.an oxygen breathing apparatusD.an oxygen indicator
单选题When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery，check it（）.Aone meter from the tank bottom and one meter below the tank topBone half the ullage of the tank and one meter below the tank topCone half the ullage of the tank and one meter above the tank bottomDat three meter intervals from the tank top to the bottom
单选题What is head tank in the closed cooling water system used for?（）Afor the release of air from the cooling waterBproviding expansion room for heated cooling waterCa place for implementing water and water treatment agentDall of the above
单选题Why is gas-freeing rarely required for LPG cargo tanks? （）ALPG is compatible with all cargosBLPG's high oxygen content makes it nonvolatileCCargo tanks are inspected less frequently than on oil tankersDThe cargo tanks are used for one type of cargo only
单选题When checking the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery，the atmosphere must be sampled（）.Aone meter from the tank bottom and one meter below the tank topBone half the ullage of the tank and one meter below the tank topCone half the ullage of the tank and one meter above the tank bottomDat three meter intervals from the tank top
单选题A tank which has been sealed for a long period of time can be dangerous because （）.Asteel surfaces consume oxygen by rustingBsealed tanks usually form a vacuumCmoisture condenses in the tank, displacing the oxygenDmost tank coatings give off poisonous vapors in the presence of moisture
单选题Before a tank is to be crude oil washed，the oxygen content in the tank must be measured at a position（）.Aimmediately above the level of the oilBat the top of the tankCin the vent riserDone meter from the deck
单选题Deficient oxygen content inside a chain locker can be detected with（）.Alitmus paperBa combustible gas indicatorCan oxygen breathing apparatusDan oxygen indicator
单选题What is a cofferdam（）.ATube fitted to an ullage holeBArea the product is loaded intoCVoid or empty space separating two tanksDOpening in the deck used for cleaning a tank
单选题What is used to view status messages sent to a file named "test" as they are sent?（）Amonitor start testBshow log testCview log testDshow test realtime
单选题Inerting means（）.Athe introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeBthe introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeCthe introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargoDAll of the above
单选题What can be used to measure the percentage of oxygen inside a chain locker?（）AFlame safety lampBCombustible gas indicatorCOxygen indicatorDH2S meter
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While testing a cargo tank，your oxygen indicator reads 25% oxygen in the tank. You would then （）.Aenter the tank safelyBsuspect the accuracy of the readingCventilate the tankDtest for nitrogen
单选题What is used to test a tank for oxygen content?（）ACombustible gas indicatorBVapor indicatorCAtmosphere analyzer kitDNone of the above