Sealing System


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Hi everybody. I need your help about sealing oil system in our BLC 406 centrifugal compressor. Our operation system is MARK VI.

After startup of gas turbine MS 5002 b in MARK VI operation system we saw an abnormal behaviour in sealing oil system. The oil level on over tank head not steady and the second seal pump start to compensate the lack of oil.

We started by checking the regulate valves, the safety valves and sealing oil flow return to the tank. We checked also the oil flow of the pumps. We didn't find any problem in the previous checking. I'm realy confused. Thanks.