Maintenance Planning. Test 1 – Online Maritime Tests

It is very important to follow a maintenance schedule. Why?

To prevent serious damages on main components.
Cleaning of the bowl is only needed.
Not important at all.
To improve the purifier's efficiency.

How will continuous low load operation influence the service interval of the cylinder covers on a 4-stroke engine?

Reduce the service interval
Improve the service interval since the engine is 'saved' from high loads
Increase the service time due to carbonizing of cylinder head, piston and turbocharger.
No influence at all

We are taking a crankshaft deflection control of the engine. The reason is:

to control the timing of the ignition.
o control the weardown of the crank bearings.
to control the weardown of the main bearings.
to control the flexibility of the shaft.

What is the most aspect of communication with the deck department ?

Ballasting operations, cargo hold bilge pumping.
Executing orders from and issuing warnings to the bridge.
Operation of fire fighting and life saving equipment.
Executing of orders from the bridge.

On board your vessel the main engine consumes hourly 1375 litres HFO, the boiler 560 litres per hour and the auxiliary diesel 166 litres per hour. At what throughput shall you feed the HFO purifier?

3200 litres/hour
2350 litres/hour
3700 litres/hour
2600 litres/hour

Suppose the crankcase oil system contains 14000 litres of oil and the capacity of the Lubrication Oil purifier is 2500 litres/hour maximum, what throughput should be maintained?

1950 - 2100 litres per hour.
2300 - 2400 litres per hour.
1350 - 1450 litres per hour.
1680 - 1850 litres per hour.

What kind of 5-yearly maintenance should be carried out on this type of heat exchanger ?

Pull and clean tube nest and inspection by class surveyor.
Mechanical and chemical cleaning, test for classification.
Exchange all gaskets, clean and test for classification.
Open inspection covers and check for leaks, clean tubes.

According to regulations, on board ships it is necessary to have PUMP REDUNDANCY. What does this mean ?

Two identical pumps must be fitted for each circuit.
A stand-by pump must be available for each pump separately
All essential pumps in the engine room have a back-up possibility
All pumps in the engine room are duplicated

Review Answers