Auxiliary Machinery. Test 67 – Online Maritime Tests

The main danger of feeding cold feedwater into a boiler is _____

If the oil flows from the sludge outlet on an oil purifier, the most likely reason for this is _____

that the relief valve of the gear-type supply pump is working.
that air is being sucked into the suction piping of the lub oil pump.
that defects have developed in the vertical shaft parts or otherwise that the rubber plate has hardened.
that the bowl has not been closed correctly, there is a fault in main seal ring, pilot valve or water supply for closing the bowl.

When water is found mixed in the light liquid (oil) outlet of an oil purifier, the most likely reason is _____

that the relief valve of the oil supply attached pump has been set too high, causing overload.
water in the gear case.
defects in the horizontal shaft parts.
excessive supply of sealing water, feed rate too high and water outlet of oil clogged.

What would your first action be if the boiler feed pump stopped?

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