Auxiliary Machinery. Test 49

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

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

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

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 fuel oil pressure and temperature are correct.
The ignitor rods, clean the ignitor tips if necessary.
The boiler water level is at the correct level.

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 ?

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

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

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

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

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

What size of refrigeration installation is shown here?

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

Review Answers

Auxiliary Machinery. Test 49

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