Resolving IGV servo sticking turbine trips

System: GE Frame 9E Power Turbine ( Location: Oman ) – June-July 2016

Oil Brand: Total Preslia 46

Oil Volume: 13,000 liters

Problem: IGV Servo Valves sticking problem due to Oil varnishing caused repeated trips and restart problems.

Summary of project:
HYPRO SVR skid was installed on the oil tank for Oil cleaning in order to eliminate the associated problems. To quantify the results, bi-monthly Oil analysis was conducted to monitor the improvement in oil condition. Within 35 days, the Oil condition was back to the normal range, thereby eliminating sticky valves problem and eliminating the turbine trips.

Quantified goals: 
ISO 4406 Particle count < 17/14/10
MPC < 15
MPC Pre SVR installation: 30.5
MPC Post SVR installation: 13.8
Particle Count Pre SVR installation: 19/17/11
Particle Count Post SVR installation: 16/13/10
Benefits achieved – USD
Eliminated frequent trips and restart problems associated with Oil Varnishing resulted in uninterrupted Power supply.

Oil Sampling for turbine oil analysis
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