G
Sir,
We have Gas turbine of GE Frame one 6.4 MW with MARK2 control system. we facing below mentioned problem. kindly expert opinion is required. Unit was successfully stopped for gas turbine MOH.
MOH was completed successfully. however, startup sequence of unit is not being complete as unit was tripping without alarm. Below mentioned action already has been completed however fault is still persisting.
1. Verified the health of speed picks
2. Monitored the speed pickup signals with recorder.
3. Speed ratio and gas control servo valve (MOOG) replaced.
4. Range of PCD (axial compressor discharge verified.
5. Dry run test of control system was verified and found successful.
It is important to mentioned that unit was tripping while purge time is being complete bleed valve being close.
Your prompt response will highly appreciate in this regard.
Your Faithful
Ghulam Rasool
Technician Instrument Pakistan petroleum limited
We have Gas turbine of GE Frame one 6.4 MW with MARK2 control system. we facing below mentioned problem. kindly expert opinion is required. Unit was successfully stopped for gas turbine MOH.
MOH was completed successfully. however, startup sequence of unit is not being complete as unit was tripping without alarm. Below mentioned action already has been completed however fault is still persisting.
1. Verified the health of speed picks
2. Monitored the speed pickup signals with recorder.
3. Speed ratio and gas control servo valve (MOOG) replaced.
4. Range of PCD (axial compressor discharge verified.
5. Dry run test of control system was verified and found successful.
It is important to mentioned that unit was tripping while purge time is being complete bleed valve being close.
Your prompt response will highly appreciate in this regard.
Your Faithful
Ghulam Rasool
Technician Instrument Pakistan petroleum limited