Maintenance Planning. Test 2 – Online Maritime Tests

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

The only maintenance necessary is cleaning of the bowl.
To prevent serious damages on main components.
Not important at all.
To improve the purifier's efficiency.

How often shall the oxygen analyser be calibrated?

On Chief Officers order
Prior to every plant start-up, following an 8 hour stop
At regular intervals
Every time the plant is shut-down

You are going to overhaul a centrifugal pump in accordance with the PMS. The pump is running under optimal conditions and normally operated. Which of the following parts are expected to deteriorate during normal operation and thereby be due for renewal?

The distance pieces.
Ball bearings on the pump shaft, and wear rings on pump housing or impeller.
The impeller and the impeller fastening nut.
The shaft itself .

What is the most practical way to control the humidity of the cooled air to the accommodation as well as efficiency control in tropical climates ?

Keep portholes and vents closed.
Keep both fresh air intake and recirculation open , throttle with F.A.I.
Keep the outside watertight doors closed as much as possible.
Ensure galley, laundry room, drying room doors always closed.

What is the most important connection with the deck department for the chief engineer ?

Knowledge of all sailing plans and cargo loading/discharging.
Maintenance of all safety appliances.
Maintenance of all cargo gear.
The ships speed and consumption.

One of the Main Engine cooling pumps is down for maintenance. The rest of the cooling pumps are operating on full capacity with minimum margins on the maximum temperature limit. What will be the correct precaution or action to take at the end of the day?

Operate the engine room on manual mode until the cooling pump is in operation, switched in stand-by mode.
Arrange with a rating 'on watch' in the engine room.
Arrange frequent checks of the condition during the night, operating on UMS-mode
Trust that the alarm function and automatic temperature regulation will assure safe operation for UMS-mode during the night, switching to UMS-mode as normal

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

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

You are required to order 1 years supply of refrigerant compressor oil and you estimate that consumption will be 480 litres in that time. If there is already an open drum of 180 litres on board, what will you order ?

24 pails x 20 litres.
15 pails x 20 litres.
One drum x 205 litres + 5 pails x 20 litres.
Two drums x 205 litres.

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