Turbine Operation (TO) Practice Questions - Australia High Risk Work Licence - Turbine Operation (TO) Exam

What is the primary purpose of the high-pressure jacking oil pump (JOP) during low-speed turning gear operation?

To pump accumulated oil out of the turbine casing drain back to the main reservoir To supply high-pressure hydraulic control fluid to snap shut the main stop valves To establish a hydrostatic oil film under the rotor journals to reduce starting friction and wear To cool the rotor journals by spraying oil directly into the bearing clearance

Correct Answer:

To establish a hydrostatic oil film under the rotor journals to reduce starting friction and wear

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