Auxiliary Machinery. Test 14 – Online Maritime Tests

Correct start up procedure of an oil fired boiler is that the air fan is running for some time, before oil is supplied and ignition occurs. What is the reason for this?

For safety reasons, to ensure that all explosive atmosphere inside the boiler is removed.
To allow the funnel and air system to cool down by the air before heating is supplied.
To allow the heavy fan to reach normal operation speed before load is put to the boiler.
To ensure enough air to ignite the fuel.

For a low pressure boiler, after testing the water cloride level, it is found to be 500 PPM, what action would You take?

Do nothing.
Blow down boiler and check condenser for leakage.
Increase dosage.
Decrease dosage.

If oil is found in the boiler water, what action would You take other than isolating the leak?

Blow down the boiler.
Dose with coagulent.
Dose with coagulent and blow down the boiler.
Do nothing.

What is the purpose of an observation tank in a boiler feed system?

To monitor chloride level.
For adding chemicals into the boiler water.
To check condensate returns for oil.
To monitor the water colour.

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