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- First Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q511 - General Subjects I
237. Referring to the illustration, suppose after initiating the oil discharge mode, the oily-water separator fails to come out of the oil discharge mode in a timely fashion. Cracking open the upper sampling valve reveals the presence of oil exiting under positive pressure. What is most likely the cause
A stuck oil discharge check valve prevents oil from leaving the separator, causing pressure to build and oil to exit under pressure when the upper sampling valve is opened, thus preventing the unit from exiting oil discharge mode.
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