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PHOTO - Typical Orion Minimum Load Start Time

* Fuel is total fuel consumed as % of hourly consumption at peak output.
Output is % of peak output.

Start from Minimum Load

  • Plant is operating with 7EA at 50% Load and only one steam turbine is on line.
  • The LM 6000’s and second steam turbine have been down less than 12 hrs.
  • The 7EA starts increasing load immediately.
  • The first LM 6000 starts immediately and the others follow on one minute intervals.
  • Steam turbine 1 follows steam production.
  • Steam turbine 2 starts 10 min after 7EA begins to ramp.
  • Duct burners start immediately after maximum unfired steam production is achieved.
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