M
We have Hitachi Based Gas turbine 25.6MW base load;
we have been having a recurring problem.
Once GT is started load variation is taking place freely without much change in vibration; we have a dusty environment; and have constant problem of compressor fouling.
In one of our Gas turbines which was running for 2 months load was reduced from base of 23 MW to 15MW; it was found that machine vibration increased above 155 and machine tripped; Bearing 1 vib (Turbine side) was higher than Bearing 2.
it is recurring; and once offline water wash is done; vibration is normal after startup.
did someone have a similar problem?
any suggestion for rectification.
regards
Manoj
we have been having a recurring problem.
Once GT is started load variation is taking place freely without much change in vibration; we have a dusty environment; and have constant problem of compressor fouling.
In one of our Gas turbines which was running for 2 months load was reduced from base of 23 MW to 15MW; it was found that machine vibration increased above 155 and machine tripped; Bearing 1 vib (Turbine side) was higher than Bearing 2.
it is recurring; and once offline water wash is done; vibration is normal after startup.
did someone have a similar problem?
any suggestion for rectification.
regards
Manoj