更多"The emergency bilge suction valve i"的相关试题:
[单项选择]The emergency bilge suction or bilge injection valve is used to prevent （） of the ship.
A. proceeding
B. overloading
C. collision
D. flooding
[单项选择]The emergency bilge suction or bilge （） is used to prevent flooding of the ship.
A. injection valve
B. relief valve
C. discharge valve
D. inlet filter
[单项选择]An independent bilge suction is required for （）.
A. ballast tanks
B. sludge tanks
C. machinery space bilges
D. cargo hold bilges
[单项选择]A bilge suction line，in a fishing vessel with more than 16 individuals aboard，must have a strainer with an open area not less than how many times the open area of the suction line?（）
A. one
B. two
C. three
D. four
[单项选择]All bilge suction must be fitted with suitable （）, which in the machinery space would be mud boxes positioned at floor-plate level for easy access.
A. strainers
B. valves
C. elements
D. separators
[单项选择]Bilge soundings indicate（）.
A. the amount of condensation in the hold
B. whether the cargo is leaking or not
C. whether the vessel is taking on water
D. All of the above
[单项选择]Bilge keels are more effective at clampening rolls as the（）.
A. pitching increases
B. list increases
C. rolling increases
D. dreft increases
[单项选择]If a centrifugal bilge pump were continually operated with the discharge valve closed the （）.
A. motor overload would open
B. relief valve would open
C. pump would eventually overheat
D. motor would overheat
[单项选择]Bilge keels are more effective at dampening rolls as the（）.
A. pitching increases
B. list increases
C. rolling increases
D. draft decreases
[单项选择]When discharging bilge water, which criteria must be observed?（）
A. The requirement for the oil content of bilge water discharged is 15 ppm
B. No discharge in sensitive waters
C. Any discharge in sensitive waters
D. International, national or local requirements have to be observed
[单项选择]An emergency bilge pumping system is provided and should be （） of the main bilge pumping system, according to the SOLAS 74 Convention.
A. dependent
B. in dependent
C. in series
D. in parallel
[单项选择]Increasing the valve clearance between a valve stem and rocker arm, will result in the valve （）
A. closing later
B. opening sooner
C. staying open for a shorter period of time
D. staying open for a longer period of time
[单项选择]A centrifugal bilge pump requires priming （）.
A. primarily to lubricate the shaft seals
B. due to the inability of this type of pump to lift water to cover the suction (eye) of the impeller
C. to initially unload the pump by having its head pressure equal to discharge pressure
D. in order to overcome the potential energy of water in the discharge line
[单项选择]According to the SOLAS convention, the bilge water system （）
A. must connect the bilge well suction directly
B. should not pump out the water accumulated in the cargos
C. should not used for emergency drainage in case of ship collision
D. should connect to the fire fighting system directly
[单项选择]The bilge system has been performing well; however, the aft starboard engine room bilgewell suddenly fails to be pumped outWhich of the following should be done first to determine the cause?（）
A. Open the bilge pump for inspection
B. Remove each of the manifold valves
C. Remove only the manifold valve to the affected bilge-well
D. Attempt to pump out another bilge well to determine if the entire system is affected
[单项选择]The bilge main is arranged to drain any watertight compartment （） ballast, oil or water tanks and to discharge the contents overboard.
A. rather than
B. other than
C. in addition that
D. except for
[单项选择]When installed for bilge pumping or ballast duty, centrifugal pumps require a （） to remove air from the suction pipe.
A. air chamber
B. head lank
C. primer
D. prime mover
[单项选择]If an operating bilge pump is developing good vacuum, but is unable to discharge any water, which of the following problems is the most probable cause?（）
A. The wearing rings are excessively worn
B. The suction strainer is clogged
C. The discharge valve is clogged
D. The shaft is worn
[单项选择]The minimum number and capacity of bilge pumps and fire pumps and their distributing within the ship is governed by （）.
A. Classification Society Rules
B. National requirements
C. The IMO International Convention for the Safety of Life at Sea
D. All of the above
