Turbine Start up
Turbine Start up Parameters:-
Unit Start up
Modes of Start Up.
- Cold start up ≤150°C
- Warm startup 150 °C ~ 300 °C
- Hot start up 300°C ~ 400°C
- Very hot start up ≥ 400 °C
These temperatures are metal temperatures at upper half regulating stage of HP Inner casing
Warm start up
Main steam pressure 16 kg/cm2
Temperature 400°C
Reheat steam Temperature 330°C
Rate of speed rise is 150 rpm/min.
Hot start up
Steam pressure 36 Kg/cm2
Temperature 440°C
Reheat Temp 410°C
Rate of speed rise is 250 rpm/min.
Very Hot start up
Main steam pressure 45 kg/cm2
Temperature 510°C
Reheat steam Temperature 480°C
Rate of speed rise is 250 rpm/min.
