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  1. Romefu12

    Turbine in plant simulation

    If you are looking for a specific model of turbine to base your simulation on, for example a Westinghouse 501F or a GE 207FA –D11, those figures for estimated thermal efficiency under ISO conditions can be found in the manufacturer’s literature, or in specific modeling software such as Gate...
  2. Romefu12

    7FA Steam Adjusted Heat Rate

    Are you wanting to calculate the heat rate of the gas turbine itself or the heat rate of the combined cycle plant as a total heat rate? The Gas Turbine heat rate is easy, however the total plant heat rate depends on many factors and will require some effort. Gas Turbine Heat Rate as follows...
  3. Romefu12

    Restart requirements

    Restarting a 9FA after a trip or normal shutdown, regardless of vintage is simply at the customer’s own discretion. GE directive is to restart the unit within 2 hours for minimal effects after a trip from full load. If the unit is not restarted within 2 hours then GE recommends the unit go on...
  4. Romefu12

    GE MS9001 mystery hole

    aafuni To specifically answer your question it might help to post a part number and casting number as GE has many iterations of nozzle segements for all frame sizes / firing temperatures etc Kind Regards Romefu12
  5. Romefu12

    Gas turbine compressor washing

    Online Compressor Washing can be evaluated by analyzing the Gas Turbine Output and Compressor Efficiency both before and after the washing. Be advised that this net gain is only temporary and will depend on many factors as to the effectiveness of inlet filtration, the operating environment...
  6. Romefu12

    GT 9FA increased proximity readings at TE of generator

    npower0073 There is an issue with the 7FA units coupled to the 7FH2 Hydrogen Cooled Generators that the 9FA units may also be susceptible. The issue is that of the alignment elevation of the Generator. On the 7FA / 7FH2 configuration, the Generators were being lowered to account for an increase...
  7. Romefu12

    US KKS Training

    Iyabo KKS tagging system, as far as I know is only taught by the OEM’s from Europe, That would be Siemens and ABB or Alstom Power. I was taught the system by both companies however I think there may be somewhere you can purchase a book to teach you. I would think if you were working in a power...
  8. Romefu12

    Fuel Gas Temperature to GTG

    ppmsb The event of the Fuel Gas Heater trip/fail is not necessarily detrimental to the GT if only occurring a few times. If the unit is setup correctly and depending on the unit model, for example a GE 7/ 9FA+e would simply perform a runback to a minimal pre-selected mode and load. However there...
  9. Romefu12

    Hydropower Bearing Arrangments

    QCE Which Rotor are you speaking of? I would assume that you are speaking of the thrust bearing being located below the generator rotor, with the turbine shaft and turbine runner hanging below? If this is the case then in my opinion the theory of "gravity works" can be a blessing and a...
  10. Romefu12

    Hydropower Bearing Arrangments

    QCE Your questions are a little vague, What type of Hydro Turbine are you speaking (by the over and under statement I would assume a Vertical Kaplan type Turbine? Another question about the arrangement I would assume you are asking about the Combined Guide and Thrust Bearing being under the...
  11. Romefu12

    info on becoming aircraft tech

    11Rookie11 Many years ago I began working the same field in auto mechanics as a hobby in High school. At that time I was also being trained as a Journeyman Machinist. I still work on all of my own vehicles. But if you don’t take this personally let me give you some advice that may help you...
  12. Romefu12

    General Electric traction motor specs needed: GHM 838

    EEINPA Try contacting the Ozark Mountain Railcar Company at the following link. http://www.ozarkmountainrailcar.com/ge80toncentercab.htm They have an 80 ton GE Switcher for sale that still has the GHM-838 traction motors and may have a manual or a better nameplate. Romefu12
  13. Romefu12

    Clogging Of Burner Nozzles

    MAH82 Sounds like you just answered you flame instability issue. Your fuel nozzles need to be clean, especially in DLN systems. Romefu12
  14. Romefu12

    Flame Unstability

    MAH82 Flame instability can be cause by a number of issues. Much depends on the type of combustion system in use. You statement is that the instability occurs in pre-mix mode. Without knowing what manufacturer of gas turbine you are using and what combustion system you are using I can only say...
  15. Romefu12

    GE 9FA DLN II combustion trouble

    Stratford Your L28FDD alarm indicates loss of flame in Can 8. However your HIGH EXHAUST TEMPERATURE SPREAD TRIP caused by Exhaust TC 17 indicates a swirl calculation @260 MW to indicate a problem with Can 4. I would begin by borescope inspection of cans 3,4, 5, and 8. Romefu12
  16. Romefu12

    Should engineers price gouge

    Dear All Personally I think many Engineers pay is extremely low. At this point I really don't understand why anyone would want to do my job for less than 6 figures a year. I have been in the Power Generation business and worked for the big 3 Power Generation companies for 25 years. If I had...
  17. Romefu12

    GE 9FA DLN II combustion trouble

    Stratford It is not unusual for 1 can to suffer a flame out. If you do suffer a flame out you will create a substantial High Spread. You need to download the Exhaust Thermocouple Spread data during the event (Control Tags TTXD1 thru TTXD27) and your FD_INTENS_1 thru FD_INTENS_4 to determine when...
  18. Romefu12

    GE 9FA DLN II combustion trouble

    Stratford Diagnostics of the 9FA and DLN 2.0 takes some rather substantial expertise and a host of data download of the event from the control, Mark VI is presume and a host of control tags to determine what actually happened to give you a loss of flame and subsequent HETS trip. You would need...
  19. Romefu12

    Bearing Temperature

    Caemaniac For tilting pad segmented shoe, or elliptical friction type bearings typically alarm at 265 degrees F. This is where the Siemens, Westinghouse, and GE engines I have been privileged to work on currently alarm. This alarm is for High Bearing Metal Temperature and is not used to trip the...
  20. Romefu12

    Tool Tracking

    DP68 I don't fully understand your entire issue of tool tracking in this case however if your desire is to prevent theft of tools and equipment than Laser Etching is a good choice, if your deire is to track what tools and equipment have not been returned to your tool room, broken, lost, etc than...

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