更多"The fresh air intake of the inert g"的相关试题:
[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]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 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]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]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
[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
[单项选择]Each ship having an inert gas system must have a portable instruments to measure concentrations of hydrocarbon vapor in inert atmospheres and also to measure（）.
A. nitrogen
B. oxygen
C. carbon dioxide
D. water vapor
[单项选择]Using an inert gas system on a tanker has which advantage(s)? （）
A. Provides for faster loading
B. Lowers oxygen content in the tank
C. Provides better fuel economy
D. All of the above
[单项选择]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
[单项选择]Which method is used to supply inert gas from a flue gas system to the cargo tanks?（）
A. Exhaust gas pressure from the stack
B. High capacity fan
C. Inert gas compressor
D. Natural aspiration
