Hello,
At combine cycle power plant we have 2 GE gas turbine 6FA and 1 steam turbine Doosan Skoda MTD 40 CA. Steam turbine have knocking sound from gear wheels when turning gear operating. We stopped turning gear and opened inspection cower and check gear well, found normal. Also turning gear unit started without synchronization and also found good. Sound appearing after turning gear synchronization when turbine shaft speed get 25rpm and more. Can someone give some recommendations with your experience?
P.S jacking oil pressure at all bearings is normal and also lube oil pressure is good.
Thank you.
At combine cycle power plant we have 2 GE gas turbine 6FA and 1 steam turbine Doosan Skoda MTD 40 CA. Steam turbine have knocking sound from gear wheels when turning gear operating. We stopped turning gear and opened inspection cower and check gear well, found normal. Also turning gear unit started without synchronization and also found good. Sound appearing after turning gear synchronization when turbine shaft speed get 25rpm and more. Can someone give some recommendations with your experience?
P.S jacking oil pressure at all bearings is normal and also lube oil pressure is good.
Thank you.