Customer Case for Petrochemical Conversion Company:
- Speed Turbine over speeding and tripping when the main stop valve is opened. : Alfanar specialist observed that when turbine stop valve is opened the turbine is over speeding and tripping the turbine.
The following were the activities carried to solve the problem:
1) Stop valve throttle bush contact was checked – Found ok.
2) Throttle valve bush dimensions was checked – Found more clearance than the protocol dimensions.
3) Throttle valve plunger – Found bent .
4) Throttle valve along with the bush was manufactured by ATS and assembled and commissioned the turbine —- Problem was solved.