Auxiliary Machinery. Test 58 – Online Maritime Tests

What would you do if water was found leaking at sea from the exhaust gas boiler and it is found to be from a leaking finned tube pipe from the steam generating unit ?

Plug the section/ bank.
Plug the pipe.
Put the exhaust gas boiler out of commission.
Put the entire steam generating bank out of commission.

What is the main purpose of the photocell 'P' fitted in the burner front casing ?

To cut-out the boiler if water level is low.
To maintain the correct fuel/air ratio.
To detect firing of the pilot burner 'PB'.
To energise the fuel solenoid 'S' when comustion is satisfactory.

What should be the level in the sight glass of the accumulated fresh water in the fresh water generator ?

Between one fourth and half level.
Two inches from the top.
One inch from the bottom.
Half level.

After boiler inspections and surveys, what is the final test carried out by the surveyor in order to accredit the safety valves and boiler mountings ?

Check the condition of valves and valve seats.
Check the valve spindles for cracks.
Check safety valve blow-off pressure with boiler under steam.
Check the valves for corrosion.

What is the purpose of 'S' fitted in the fuel admission line to the rotating cup burner of this boiler ?

Emergency stop / Boiler failure cut-out for any reason.
Keeps fuel to burner open in normal firing mode via photocell.
Fuel admission by operation/ Fuel block by stop/emergency.
All of these.

By which unit is the combustion intensity in this boiler controlled ?

By the regulating valve 'R'.
By pressostat controlled fuel admission solenoids.
By the compound regulator.
By the position of the air flap.

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