Oilers/Plant Tenders (HHC) Civil Service Exam 2026 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 440

Where is the oil purifier typically located in a ship's lube-oil system?

In the engine room

On the main deck

Below the overhead settling tank

The oil purifier is typically located below the overhead settling tank in a ship's lube-oil system because this positioning allows for efficient gravity drainage and helps maintain optimal pressure and flow of lube oil into the purifier. The overhead settling tank serves as a reservoir that allows for sedimentation of impurities and contaminants from the oil, ensuring that only cleaner oil is directed to the purifier. This is crucial for effective purification and maintaining the overall health of the lube-oil system. Proper placement aids in process efficiency, reduces the risk of contamination, and ensures that the lube oil meets the necessary quality standards before reaching the engine components.

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At the fuel tank level

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