Expansion tank should be used to remove （） from cooling water.

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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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• The wooden plug inserted in the vent of a damaged tank should be removed if you are going to （）.

  A . pump from the damaged tank B . fight a fire C . abandon ship D . use the crossover system

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• In setting the valves on a steam-smothering system on a tank vessel，the master control valve to cargo tanks should be（）.

  A . open and individual tank valves open B . open and the individual tank valves closed C . closed and the individual tank valves closed D . closed and the individual tank valves ope

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• Approximately what percent of tank space should be left for expansion of oil due to possible temperature increase?（）

  A . 1% to 3% B . 1% to 2% C . 4% D . 2% to 4%

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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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• In setting the valves on a steam-smothering system on a tanker，the master control valve to cargo tanks should be（）.

  A . open and individual tank valves open B . open and the individual tank valves closed C . closed and the individual tank valves closed D . closed and the individual tank valves ope

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• Gasoline tanks should be filled（）.

  A . to the top to expel all vapors from the tanks B . to the top so the operator is certain how much fuel he has aboard C . with only sufficient fuel for the planned trip so excess gasoline is not carried D . to near the top with some space allowed for gasoline expansio

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• Before being used the fuel service tank should be drained of （）.

  A . soda solution B . mechanical impurities C . ballast D . water and residual

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• Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an（）.

  A . Orsat apparatus B . flame safety lamp C . Halide torch D . combustible gas indicator

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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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• 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 amount of lubricating oil in the drain tank should be checked by （）.

  A . measuring B . sounding rod C . metering D . weighting

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• A bonding cable should be connected for cargo operations aboards a tank vessel as soon as the（）.

  A . cargo has been loaded or discharged B . cargo ghose is connected C . cargo pumps are started D . vessel is ready to handle cargo

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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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• Your vessel is taking on bunkers from a shore side facility, if oil begins flowing from one tank vent, which of the following actions should be taken FIRST?（）

  A . Open the intake valve to an adjacent tank B . Set out drip pans and sawdust and begin to mop up the spill C . Signal the shore control point to shutdown D . Close the valve on the tank vent line

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• Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because（）.

  A . a subsequent temperature rise will cause the cargo to overflow B . air pockets may cause the cargo to bubble out of the ullage hole C . the increased viscosity of the product requires higher loading pressure which increases the chances of a spill D . the tank valve may be stiff and a spill will occur before the valve can be closed

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• The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and （）.

  A . reduce water temperature B . reduce water turbulence C . provide an air cushion D . allow for an increase in water volume as the engine warms u

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• How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?（）.

  A . With gooseneck vents B . With warning signs C . With flame screens D . With pressure-vacuum relief valve

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• How should cargo tank hatches be protected when the ullage opening is open and the tank not gas free?（）.

  A . With gooseneck vents B . With warning signs C . With flame screens D . With pressure-vacuum relife valve

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• An alarm device inserted between the deaerating tank and the expansion tank can notify the on-watching crew that （）

  A . the expansion tank is lack of water B . the expansion tank is over flowing C . there is something wrong with the cooling system D . there is something wrong with the engine

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• During fueling operations, which of the listed precautions should be taken when topping off fuel tanks?（）

  A . Reduce the pumping rate by closing the deck filling valve B . Close all overflow valves C . Place 5 gallon containers under all flange connections in the fuel line D . Reduce the pumping rate and sound tanks frequently as the level rise

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• The main propulsion diesel engine jacket water temperature rises above normal, with the raw water sea suction and the expansion tank water level being normalWhich of the following problems is most likely the cause?（）

  A . Faulty thermostatic bypass valve B . Eroded zinc pencils in the heat exchanger C . Steam formation in the expansion tank D . Excessive leakage from jacket water pump seal

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• Standby or emergency diesel generator day tanks should always be kept full to reduce the possibility of__________.

  A.sediment contamination B.fuel filter clogging C.moisture formation D.inadequate transfer pump suction head

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