更多"The purpose of inert gas systems ab"的相关试题:
[单项选择]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
[单项选择]Your assigned emergency stations aboard your vessel can be found on the ships （）.
A. muster list
B. certificate of inspection
C. clearance papers
D. permit to proceed
[单项选择]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（）.
A. cargo pump failure
B. blower failure
C. deck seal low water level
D. low inert gas temperature
[单项选择]Functions aboard a tanker or tank barge such as connecting，disconnecting，and topping off must be supervised by（）.
A. any certificated tankerman
B. the Master of the vessel
C. the officer of the watch
D. the person designated as person in charge
[单项选择]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?（）
A. 5%
B. 8%
C. 6%
D. 3%
[单项选择]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
[单项选择]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
[单项选择]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
[单项选择]Each inert gas system must be designed to supply the cargo tanks with a gas，or mixture of gasses，that has an oxygen content by volume of（）.
A. 5% or less
B. 10% or less
C. 15% or less
D. 20% or less
[单项选择]How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）
A. De-energizes the "charged mist" effect
B. Maintains a positive pressure on the vent header to cool the flammable vapors
C. Inert gas filters out the flammable vapors from the cargo tank spaces
D. Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit
[单项选择]Upon arrival at the discharging port，the inert gas system is（）.
A. turned on
B. turning on
C. turn on
D. to turn on
[单项选择]An inert gas system installed on a tanker is designed to（）.
A. aid in the stripping and cleaning of cargo tanks
B. increase the rate of discharge of cargo
C. force toxic and explosive fumes from a cargo tank to vent to the outside atmosphere
D. lower the oxygen levels inside cargo tanks，making explosion nearly impossible
[单项选择]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（）.
A. filter
B. cooler
C. scrubber
D. purifier
[单项选择]The combined fan discharge rate in an inert gas system is related to the（）.
A. shoreside loading rate
B. maximum cargo pump discharge rate
C. boiler forced draft fan rate
D. size of the largest cargo tank
