Fuel oil day tanks for diesel engines must be checked and cleaned and cleaned at regular intervals in order to remove________.

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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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• Fuel oil tanks must be fitted with （） that can be closed rapidly and remotely in the event of an emergency such as a fire.

  A . stop valves B . non-return valves C . quick closing valves D . relief valve

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• Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to（）.

  A . be fitted with a positive fuel shut-off valve located at the tank B . have a shut-off valve at the top of the tank C . have a gate valve easily accessible in the space where the tank is located D . have a drain cock at the lowest point in the fuel line

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• The sequence of parts in a generally used fuel oil supply system for a main engine is （） (1)tanks in the double bottom (2)centrifuges (3)service tank (4)settling tank (5)viscosity regulator

  A . (1)-(2)-(4)-(3)-(5) B . (1)-(4)-(2)-(3)-(5) C . (1)-(3)-(2)-(4)-(5) D . (1)-(5)-(4)-(2)-(3)

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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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• The viscosity regulator controls the fuel oil temperature （） provide oil at the correct viscosity for combustion.

  A . in order that B . because of C . in order to D . owing to

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• When you are transferring fuel oil to the setting tanks, precautions to be observed should include （）

  A . plugging gooseneck tank vents to prevent accident overflow B . maintaining a high transfer rate until a slight trickle of oil is observed flowing from the overflow line C . sounding the tanks frequently and reducing the transfer rate as the level approaches maximum fill D . maintaining a supply of chemical dispersant to cleanup minor oil spills adjacent to the shi

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• Fuel oil tank vents are fitted with a screen which will stop（）.

  A . oil from flowing out of the tank vent B . air from entering the tank vent C . vapors from leaving the tank vent D . flames on deck from entering the tank vent

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• If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should （）.

  A . close the static leg filling valve B . close the overflow tank falling valve C . reduce the fuel oil pumping rate D . stop the fuel oil pumping operatio

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• The （） or balance tank collects the re-circulated fuel oil.

  A . overflowing B . sump C . bilge D . buffer

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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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• When preparing a ship for heavy weather，fuel oil day tanks should be（）.

  A . pumped overboard to calm the seas B . drained to the lower hull to reduce free surfaces C . filled to ensure that sufficient fuel oil is available during a lengthy emergency D . partially drained to increase free surfaces in order to reduce motio

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• Which of the following operations need to be entered on the Oil Record Book Part I? （） (1) Ballast of fuel oil tanks (2) Condition of oil discharge monitoring and control system

  A . （1）only B . （2）only C . both（1）and（2） D . neither（1）nor（2）

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• Obviously, for a given fuel oil, its pour point is （） its cloud point.

  A . lower than B . higher than C . as same as D . better tha

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• Fuel oil is pumped by means of （） from the bunker tanks.

  A . a transfer pump B . a bilge pump C . a service pump D . a vacuum pum

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• Following a grounding, you can best determine that a SLACK fuel oil tank has been holed by （）.

  A . sounding the tank B . waiting for the vessel to list C . examining tank boundaries D . checking fuel oil strainer

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• We（）this port for replenishment of fuel oil.

  A . is calling at B . are calling at C . is calling on D . are calling o

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• Injectors for use with heavy fuel oil must be cooled by either water or light oil to （）

  A . prevent heat corrosion to internal components B . increase fuel delivery rate and economy C . prevent pre-ignition D . avoid carbonization of the nozzle ti

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• Fuel oil day tanks for diesel engines must be checked and cleaned and cleaned at regular intervals in order to remove（）

  A . sludge B . water C . micro-organism growth D . all of the above

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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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• You are transferring fuel from the storage tanks to the day tanks by means of an electric fuel oil transfer pumpIf the pump motor catches fire, you would FIRST （）.

  A . secure the fuel manifold B . shut off power to the pump C . shut off the power ventilation D . spray water on the fire

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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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