Auxiliary Machinery. Test 49 – Online Maritime Tests

What size of refrigeration installation is shown here?

A large installation (reefer cargo).
A medium size installation (accommodation aircon).
A very small cabinet refrigerator unit.
A smaller size installation(provision rooms, small air conditioning units).

Which of the following conditions is a lock-out condition which will consequently illuminate the lock-out indicating lamp fitted to the control panel of the boiler burner light up ?

Low fuel oil pressure.
Any of these faults.
Low water level.
Burner not correctly secured in position.

What is item 'B' in this steam lay-out drawing ?

The 3.0 bar manifold safety valve.
The 7.0 bar manifold safety valve.
The 7.0 bar pressure reducing valve.
The 3.0 bar pressure reducing valve.

Prior to carrying out any work on boiler burners, you should isolate them. What is understood by this ?

You must ensure that all electrical power supplies are shut off.
You must ensure that all fuel line valves are shut and fuel drained.
You must ensure that funnel uptake flap is closed.
All of these.

If a dirty oily/water mixture is entering chamber item 1 of this separator, where will the dirt settle ?

With the liquid item 2.
With the liquid item 3.
On the separation plate between liquids 2 and 3.
On the bottom item 4.

If you fire the boiler and it misfires repeatedly, indicating flame failure, what are you going to check first?

The photocell is clean in sight glass 'G'.
The boiler water level is at the correct level.
The fuel oil pressure and temperature are correct.
The ignitor rods, clean the ignitor tips if necessary.

What is item 'A' in the steam lay-out drawing ?

The 7.0 bar steam pressure relief valve.
The main 7.0 bar pressure reducing valve.
The 3.0 bar steam pressure relief valve.
The 7.0 bar - 3 bar pressure reducing valve.

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