Question 629Steam Plants - Assistant Engineer

70% to pass

Which of the following statements concerning the operation of a lube oil purifier is correct?

AThey should be operated as slowly as possible to ensure a long service life.
BThey should be operated at maximum design speed and recommended operating capacity.
CThey should not be primed with water when operated as a separator.
DThey should be operated as clarifiers for optimum moisture removal.
AI Explanation

The correct answer is B) They should be operated at maximum design speed and recommended operating capacity. Lube oil purifiers are designed to operate at their maximum design speed and recommended operating capacity in order to achieve optimal separation of contaminants from the oil. Running the purifier at a slower speed or below its recommended capacity would result in less effective separation and a shorter service life for the purifier. Priming the purifier with water when operating as a separator (option C) is also incorrect, as this can disrupt the purification process. Lastly, operating the purifier as a clarifier for moisture removal (option D) is not the primary function of this type of equipment.

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Official Resources
46 CFR Machinery & Electrical 46 CFR Engineering USCG National Maritime Center
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