Recent content by Aptx4869

  1. A

    7FH2 Generator Cooler and Rated Load

    Greetings While I was reading GEK-107092d, I came across something not very clear. It talks about isolating one cooler (in case it has a failure) of the generator. Fortunately, we haven't had any cooler failures in the past. the quote is: "If a cooler leak is severe, the defective cooler...
  2. A

    Gap Voltage for Axial Displacement and Zero Position

    Dear all During our outage, found gap voltage for Bently Nevada axial displacement probe was around 6.4 Vdc. I&C team adjusted this one to 10.2 Vdc since 10 Vdc is the recommended setting. After unit back to service, the axial displacement reading increased too much while the turbine was...
  3. A

    Checking for Leaks for Gas in the Turbine Compartment

    Dears, After we completed T&I for one of our units, three of the hazardous gas detectors read high when transferring from mode 4 to mode 6Q. The total number of detectors is eight. It seems there is really gas leak in the turbine compartment. Now I am asking if we could pressurize the pm4...
  4. A

    1st Stage Nozzle Melting at Trailing Edge

    Greetings all, During our T&I inspection, the turbine shell (casing) was removed for some job (not related to 1st stage nozzle). We found the 1st stage nozzles (S1N) at 9 & 6 clock positions have their trailing edge melted to some degree with TBC removed also from trailing edge. the leading...
Top