Maintenance Planning. Test 2

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 ?

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

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 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
Arrange with a rating 'on watch' in the engine room.

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

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

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

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

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

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

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

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

How often shall the oxygen analyser be calibrated?

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

Review Answers

Maintenance Planning. Test 2

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