A
Dear sir,
GE make Mark V control system control and protect the 6FA Gas Turbine. Moog make servo valve used in our plant. Gas Speed ratio valve control the P2 pressure. Combustion inspection work carried out on 12.08.16 after CI works, offline water wash work carried out and GT put back into service on 17.08.17. Physically inspection work carried out there was no problem at field, but oil leakage found in Gas Speed ratio valve.
Temporarily remedial arrangement of leakage hydraulic oil filtering and oil recirculate from SRV to Lube oil tank. After five days the oil leakage gradually corrected automatically and then oil leakage stopped. It is came to know that air lock may be in the SRV. The machine continuous running more than 275 days and regard created. On 18.05.17 the Gas Turbine got tripped on unit blackout and the unit synchronized. Now, again the oil leakage found in the SRV. 4 days continuously running, but leakage problem persist in THE SRV. How to attend the leakage arresting? The SRV dismantling and assembling work procedure and suggestion may be given please.
PERUMAL
AEE/C&I
[email protected]
GE make Mark V control system control and protect the 6FA Gas Turbine. Moog make servo valve used in our plant. Gas Speed ratio valve control the P2 pressure. Combustion inspection work carried out on 12.08.16 after CI works, offline water wash work carried out and GT put back into service on 17.08.17. Physically inspection work carried out there was no problem at field, but oil leakage found in Gas Speed ratio valve.
Temporarily remedial arrangement of leakage hydraulic oil filtering and oil recirculate from SRV to Lube oil tank. After five days the oil leakage gradually corrected automatically and then oil leakage stopped. It is came to know that air lock may be in the SRV. The machine continuous running more than 275 days and regard created. On 18.05.17 the Gas Turbine got tripped on unit blackout and the unit synchronized. Now, again the oil leakage found in the SRV. 4 days continuously running, but leakage problem persist in THE SRV. How to attend the leakage arresting? The SRV dismantling and assembling work procedure and suggestion may be given please.
PERUMAL
AEE/C&I
[email protected]