Auxiliary Machinery. Test 32 – Online Maritime Tests

During execution of a standard UMS-check, the Engineer on Duty is experiencing a 'low water level' alarm in a cooling water expansion tank. What will be the appropriate immediate action?

Correct water level is obtained by refilling the cooling system, and the entire system is checked for leakages
The alarm function is blocked for later action
The alarm function is blocked and the engineroom is changed to manual mode.
The set point for the water level in the expansion tank is temporarily readjusted for later action.

If a leak occurs in a lube oil cooler, the water cannot mix with the oil because the:

Oil pressure is greater than the water pressure.
Outlet valve will automatically close.
By-pass valve will open.
Cooling pump will automatically stop.

What do you think could be the cause of an air conditioning evaporation 'Icing Up'?

High sea water temperature _____
Too low suction pressure.
Low sea water temperature.
Too high discharge pressure.

What are the compartments to be regularly checked with regard to water and oil leakages?

Bilge tank(s)
Bilge wells
All those listed in the other alternatives
Tank top in the engine room.

In the lubricating oil system on an auxiliary diesel engine a duplex filter unit is used because:

Changing of filter element would not interrupt the engine operation.
It gives a better filtration of the oil.
Pressure drop is half of a single filter unit.
Clogging of the filter will not occur.

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