Dirt in the fuel oil system of a diesel engine can cause （）.

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• The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the （）.

  A . quantity of fuel to be received B . flash point of the fuel as it is received C . fuel temperature as it is received D . viscosity of the fuel being received

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• Which of the actions listed should be taken FIRST to control an oil fire in a fuel oil tank?（）

  A . Commence draining that tank as quickly as possible B . Seal off all vents to that tank C . Activate the CO system to that tank D . Shut off the steam heating coil

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• In a typical fuel system, the oil is stored in （） in the double bottom.

  A . setting tanks B . service tanks C . tanks D . drain tank

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• The burning of fuel oil in a diesel engine having a high sodium content, will cause （）

  A . corrosion and grooving of exhaust valves B . corrosion and gumming of the fuel injection pump C . salt deposits in the exhaust manifold D . slag deposits in the fuel injection equipment

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• When the fuel oil is burning in the combustion chamber, it （）.

  A . gives up large amount of heat B . gives off large amount of heat C . gives up large amount of steam D . gives off large amount of steam

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• To receive oil residues from the purification of fuel and lubricating oils in the machinery spaces, what kind of tank(s) should be provided on board?（）

  A、bilge tank B、sludge tank . C、overflow tank D、oil collecting tank

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• The FIRST course of action in fighting a fire in a cargo or fuel oil tank is to （）.

  A . secure all openings to the tank B . discharge an initial charge of CO with a hand portable extinguisher C . direct a fire hose into the tank and energize the fire main D . spray the tank boundaries with a fire hose to promote cooling

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• Because of the close tolerances used in diesel engine fuel oil pumps, a worn plunger requires（）

  A . grinding the spare plunger to the barrel B . replacing the plunger and the barrel C . highly polishing both the plunger and barrel D . replacing plunger only

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• Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler, could result in （）

  A . increased fuel consumption B . increased feed water consumption C . fuel pump failure D . combustion control system failure

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• The FIRST step to take in fighting an engine room fire resulting from a ruptured fuel oil service line, is to （）.

  A . evacuate all engine room personnel B . fight the fire with hand portable extinguishers C . activate the main CO bank D . stop the flow of leaking fuel oil

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• The soot blowers are operating in the oil fuel boiler the air/fuel ratio must （） throughout the action, and blowers greased after use.

  A . be increased B . be decreased C . remain constant D . either be increased or remain constant

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• Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the （）

  A . electronic ignition system B . compression of air by the piston C . friction in the fuel injector D . fuel oil bearing system

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• The sludge tank installed in the diesel engine room is used to collect（） Ⅰ.sludge from the fuel oil settling tanks ad centrifuge Ⅱ.water that has been collected in the settling tank

  A . Ⅰonly B . Ⅱ only C . bothⅠand Ⅱ D . neitherⅠor Ⅱ

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• Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）

  A . double bottom fuel oil tank temperature B . heater supply steam flow C . pressure of the fuel supplied to the burners D . attemperator steam flow in the heater discharge circuit

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• The temperature of the fuel oil received during bunkering operations is critical in determining the（）

  A . expansion space to leave in a tank B . flash point at which the fuel will burn C . temperature to which the fuel must be heated D . rate at which the fuel can be pumped during transfer operatio

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• To avoid excessive pressures in the fuel oil filling system during bunkering, you should （）.

  A . close the tank filling valves quickly B . top off all tanks at the same time C . rill completely all tanks to less than 95% full D . reduce the loading rate when topping off

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• The consistent burning of fuel oil with a high sulfur content in a diesel engine will result in （）

  A . clogged fuel injection pumps B . increased cylinder liner wear C . intake valve stem corrosion D . varnish deposit on pisto

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• If you detect oil in the water around your vessel while discharging fuel, the FIRST thing to do is（）.

  A . try to find out where the oil is coming from B . call the Master C . have the pump man check the discharge piping D . shutdown operatio

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• Fuel oil is regularly transferred to the day tank in order to （）

  A . allow impurities to settle out of the fuel B . allow air to escape from the fuel C . make fuel available for immediate use D . all of the above

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• The percentage of impurities in a specific fuel oil sample is determined by （）.

  A . settling in a fuel tank B . testing in a laboratory centrifuge C . burning in a calorimeter D . testing in a closed cu

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• Fueling results in the collection of waste oil in drip pans and containers. Which is an approved method of disposing of the waste oil? （）

  A . Draining it overboard when the vessel gets underway B . Placing it in proper disposal facilities C . Adding sinking agents and discharging it into the water D . Mixing it with dispersants before draining it overboard

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• In a typical fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.

  A . a service tank B . a collecting tank C . a sump D . a settling tank

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• When the heavy fuel oil is heated to achieve the viscosity of 10-15 cSt, may occurTo avoid this, a system is used in most occasions.

  A.boiling and cavitations; low temperature B.boiling and cavitations; pressurized C.leaking and boiling; low temperature D.leaking and boiling; pressurized

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• In purification, there is no fuel oil in the clean oil outlet.It could be caused by _____. I.too high temperature of the dirty fuel oil; II. too low temperature of the dirty fuel oil; III. Clogged filter

  A．I B．I．II．III C．II．III D．II

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