Recent content by JULIÃO NGAIE

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  1. J

    By pass control valve osillating during start up and fuel oil operation

    @abed.a Tivemos uma situação semelhante após a unidade nº 2, Frame 9E, funcionar apenas com combustível gasoso por mais de um ano; ela apresentou o mesmo comportamento. A solução foi substituir os filtros de diesel de alta pressão. A unidade nº 4 apresentou comportamento similar ao da unidade...
  2. J

    MARK VIe (UCSBH4A) controller does not boot, even after downloading setup and restoring to the new controller

    Dear all, I work with a GT 9E GE MARK VIe (UCSBH4A) TMR combined cycle with a steam turbine through the HRSG with a MARK VIe Dual controller. The two controllers (UCSBH4A) of the HRSG do not boot. We have already downloaded the setup through the toolbox, according to "6700AN" after replacing...
  3. J

    GT 9 E MARK VIe Trips when starting up on liquid fuel

    Sorry, I forgot to mention, before the start up we did some preparation. We remove the liquid fuel from the circuit, replace the check valves, replace the high pressure filters and the filters on the filtering skid. Then we performed fuel recirculation, so we decided to start up the GT...
  4. J

    GT 9 E MARK VIe Trips when starting up on liquid fuel

    The GT starts up with liquid fuel (diesel) up to a speed of 95%, at this exact moment the magnetic pickups (77FD1 and 77FD2) start to show values that vary very quickly, between 20% and 5%, before reaching 95% of the speed they show stable values at 20%. When the GT presents this unstable...
  5. J

    Mark Vle controller problem

    how can I do this?
  6. J

    Mark Vle controller problem

    Yes, I did it twice after we noticed this problem on the "R" controller, now the "T" controller also has the same problem, the "S" controller is the only one that is working normally.
  7. J

    Mark Vle controller problem

  8. J

    Mark Vle controller problem

    Dear all, I work with a gas turbine 9E version mark Vle, for a few hours we lost power supply to the plant causing loss of DC GT voltage, after power restoration, when powering the peecc led light boot of the controller R flashes, the controller S is ok, while controller T does not connect...
  9. J

    How to resolve excitation trip in frame 9E GE?

    Dear all, I work with GT frame 9E GE. We are having trouble resetting the "excitation trip" alarm and this situation does not allow us to synchronize. We have already tried to reset with the lockout relay on the protection panel and excitation panel, without success, it seems that the trip coil...
  10. J

    ALARM CONTROLLER HEARTBEAT STOPPED”

    Thanks for the reply, I will check
  11. J

    ALARM CONTROLLER HEARTBEAT STOPPED”

    Hello everyone, this is my first interaction. I work with the 9E GE unit, in the last two months it emits an alarm “G2.L30CSHB_Q_ALM: CONTROLLER HEARTBEAT STOPPED” by the R controller which after 10 minutes goes back to normal, for that reason we turn off the unit and are waiting for the...
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