Forced Outages and Energy losses Due to Failure of Equipment and Auxiliaries in Thermal Power Stations (Capacity 300-330 MW) in India (2009-2010 to 2011-2012) | |||||||||
Area/Cause of Outages | No. of Outages | MU Loss | %age of Group F.O. Loss | ||||||
2009-10 | 2010-11 | 2011-12 | 2009-10 | 2010-11 | 2011-12 | 2009-10 | 2010-11 | 2011-12 | |
Equipments | |||||||||
Boiler | |||||||||
Equipments | |||||||||
Boiler | |||||||||
Water Wall Tube Leakage | |||||||||
Super Heater Tube Leakage | |||||||||
Re-Heater Tube Leakage | |||||||||
Economizer Tube Leakage | |||||||||
Air Pre-Heater Problems | |||||||||
Furnace Trouble | |||||||||
Boiler Operational Problems | |||||||||
Furnace Fire Out/Flame Failure | |||||||||
Furnace Draft Abnormal | |||||||||
Drum Level High/Low | |||||||||
Other Misc. Problems | |||||||||
Total Boiler | |||||||||
Turbine | |||||||||
Turbine Bearing Problems | |||||||||
Governing/Oil System Failures | |||||||||
Turbine Differential Expansion Problem | |||||||||
Axial Shift/Thrustpad Problem | |||||||||
Turbine Eccentricity/High Vibrations | |||||||||
Turbine Rotor Failure/Damaged | |||||||||
Turbine Control Valve Problem | |||||||||
Condenser Tube Leakage/Cleaning | |||||||||
Main Steam Line Problem | |||||||||
Emergency Stop Valve (Esv) Closure | |||||||||
Condenser Low Vacuum | |||||||||
H.P/LP By- Pass System | |||||||||
Other Misc. Problems | |||||||||
Total Turbine | |||||||||
Generator | |||||||||
Stator/Stator Earth Fault | |||||||||
Rotor/Rotor earth fault | |||||||||
Gen. Transformer | |||||||||
Excitation Problems | |||||||||
Gen. Cooling System Failure | |||||||||
Seal Oil System Problem | |||||||||
Gen. Bearing Problem | |||||||||
Fire In Gen. Bushing/Bushing Failure | |||||||||
A.V.R. Problems | |||||||||
Generator Transformer Protection Relay Operation Problem | |||||||||
Hydrogen System | |||||||||
Other Misc. Problems | |||||||||
Total Generator | |||||||||
Auxiliaries | |||||||||
Boiler Auxiliaries | |||||||||
I.D. Fans Problem | |||||||||
F.D. Fans Problem | |||||||||
P.A. Fans Problem | |||||||||
Milling System/Rc Feeder Problems | |||||||||
Pipes And Valves | |||||||||
Other Misc. Problems | |||||||||
Total Boiler Aux. | |||||||||
Turbine Auxiliaries | |||||||||
Boiler Feed Pump Problems | |||||||||
Condensate Pump Problems | |||||||||
C.W. Pump Problems | |||||||||
Regenerative System Problem | |||||||||
Pipes And Valves (Turbine Aux.) | |||||||||
De-Aerator System Problem | |||||||||
Other Misc. Problems | |||||||||
Total Turbine Aux. | |||||||||
Total Boiler & Turbine Aux. | |||||||||
Others Misc. Problems | |||||||||
Other Electrical Problems | |||||||||
Unit Aux. Transformer/Station Transformer Problems | |||||||||
H.T./L.T. Supply Problem | |||||||||
Dc Supply Problem | |||||||||
Switch Yard/Bus Bar Problem | |||||||||
Breaker/Isolator Problems | |||||||||
Misc. Fire Hazards/Fire In Cable Gallery | |||||||||
Instrumentation Problem | |||||||||
Air Supply Problem | |||||||||
Other Electrical Miscellaneous | |||||||||
Subtotal | |||||||||
Fuel and Other Misc. Problems | |||||||||
Coal/Lignite Shortage/Feeding Problem | |||||||||
Wet/Poor Quality Coal/Lignite | |||||||||
Fuel Oil Problem | |||||||||
Cooling Tower Problem | |||||||||
Ash Handling System Problem | |||||||||
Raw Water Problem | |||||||||
D.M. Water Problem | |||||||||
E.S.P. Problem | |||||||||
Non- Readiness of Residual Work of New Unit | |||||||||
Vintage Unit Withdrawn And Closed For Operation | |||||||||
Other Misc. Problems | |||||||||
Subtotal | |||||||||
Grid System | |||||||||
Transmission Constraints/Grid Disturbance | |||||||||
Reserve Shutdown | |||||||||
Subtotal | |||||||||
Total Miscellaneous |