Auxiliary Machinery. Test 23 – Online Maritime Tests

After closing the drain during the blowing procedure for a glass water gauge, the water cock is opened and the water flows to the top of the glass. Then the steam cock is opened and the water flows down and out of the glass; Which of the following statements are correct?

The water level is between the water cock connection of the boiler, and the bottom of the gauge glass. It is safe to put feed water into the boiler.
The water level is above the steam cock connection of the boiler. There is a danger of priming the boiler if any additional feed is put into it.
The water level is normal, but it requires time for the gauge glass to stabilise. It is safe to put feed water into the boiler.
The water level in the boiler is below the water cock connection of the boiler. It is unsafe to put feed water into the boiler.

In a fuel oil separator liquid flows out through bowl casing drain and/or sludge outlet. What is the reason to this?

Sludge discharge or water draining in progress.
Seal ring in sliding bowl bottom defective.
Any of the others.
Strainer in operating water high-pressure side, clogged or water pressure too low.

The fuel oil separator (ALCAP) bowl discharge is not working properly

Broken water seal.
Back pressure in oil outlet too high.
Water outlet valve is not closing properly.
Opening water function missing.

Too low oil flow in the fuel oil purifier oil outlet line is caused by:

High fuel oil temperature.
Broken water seal.
Control paring disc dirty.
Low level in the fuel oil settling tank.

Classification societies require that when initially fitted to a boiler, safety valves must be subjected to a test of accumulation of pressure. Is this to:

Ensure the maximum firing rate can keep the pressure above normal working pressure.
Ensure the valves are of the correct discharge capacity for the boiler.
See at what pressure the safety valve will reset.
See how high the boiler pressure will go before the safety valve operates.

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