| Forced Outages and Energy Losses Due to Failure of Equipment and Auxiliaries in Thermal Power Stations (Capacity 300-350 MW) in India (2012-2013 to 2014-2015) | |||||||||
| Areas/Causes of Outages | No. of Outages | MU Loss | %age of Group FO Loss | ||||||
| 2012-2013 | 2013-2014 | 2014-2015 | 2012-2013 | 2013-2014 | 2014-2015 | 2012-2013 | 2013-2014 | 2014-2015 | |
| I. Equipment | |||||||||
| A. Boiler | |||||||||
| Water Wall Tube Leakage | |||||||||
| Super Heater Tube Leakage | |||||||||
| Re-heater Tube Leakage | |||||||||
| Economiser Tube Leakage | |||||||||
| Air Pre-heater Problem | |||||||||
| Furnace Trouble | |||||||||
| Boiler Operational Problem | |||||||||
| (a) Furnace Fire Out/Flame Failure | |||||||||
| (b) Furnace Draft Abnormal | |||||||||
| (c) Drum Level High/Low | |||||||||
| Others | |||||||||
| Total Boiler | |||||||||
| B. Turbine | |||||||||
| Turbine Bearing Problem | |||||||||
| Governing/Oil System | |||||||||
| Turbine Differential Expansion Problem | |||||||||
| Turbine Axial shaft /Trust Pad Problem | |||||||||
| Turbine Eccentricity/High Vibration | |||||||||
| Turbine Rotor/Failure/Damaged | |||||||||
| Turbine Control Valve Problem | |||||||||
| Condenser Tube Leakage/clean | |||||||||
| Main Stream Line Problem | |||||||||
| Emergency Safety valve Closure | |||||||||
| 1Condenser Low Vacuum | |||||||||
| 1H.P. and L.P. Bypass System | |||||||||
| 1Turnine Misc. Problem | |||||||||
| Total Turbine | |||||||||
| C. Generator | |||||||||
| Stator /Stator Earth Fault | |||||||||
| Gen. Transformer Tripping/Damaged | |||||||||
| Rotor/Rotor Earth Problem | |||||||||
| Excitation Problem | |||||||||
| Gen Cooling System Failure | |||||||||
| Seal Oil System Problem | |||||||||
| Fire in Turbo Gen. Bushing/Bushing Failure | |||||||||
| Generator Bearing Problem | |||||||||
| A.V.R. Problem | |||||||||
| Generator Protection/Relay Operation Problem | |||||||||
| Hydrogen Pressure Problem | |||||||||
| Generator Miscellaneous Maintenance | |||||||||
| Total Generator | |||||||||
| II. Auxiliaries | |||||||||
| A. Boiler Auxiliaries | |||||||||
| I.D. Fans Problem | |||||||||
| F.D. Fans Problem | |||||||||
| P.A. Fans Problem | |||||||||
| Milling System /RC Feeder Problem | |||||||||
| Pipe and Valve Boiler Side | |||||||||
| Boiler Aux. Misc Problem | |||||||||
| Total Boiler Aux. | |||||||||
| B. Turbine Auxiliaries | |||||||||
| Boiler feed Pump Motor Problem | |||||||||
| Condensate Pump Problem | |||||||||
| C.W. Pump Problem | |||||||||
| Regenerative System Problem | |||||||||
| Turbine Pipe and Valves Problem | |||||||||
| Desecrator Problem | |||||||||
| Turbine Misc. Problem | |||||||||
| Total Turbine Aux. | |||||||||
| Total Boiler and Turbine Aux. | |||||||||
| III. Other Misc Problem | |||||||||
| A. Other Electrical Problem | |||||||||
| Unit Aux. Transformer/Station Transformer Problem | |||||||||
| General Transformer Tripping/Damaged | |||||||||
| H.T/L.T. Supply Problem | |||||||||
| D.C. Supply Problem | |||||||||
| Switch Yard/Bus Problem | |||||||||
| Breaker/Isolator Problem | |||||||||
| Electrical Miscellaneous Problems | |||||||||
| Total Other Electrical Problem | |||||||||
| B. Fuel and Other Misc. Problems | |||||||||
| Coal Feeding Problem | |||||||||
| Lignite Feeding Problem | |||||||||
| Wet/Poor Quality Coal | |||||||||
| Fuel Oil Problem | |||||||||
| Ash Handling System Problem | |||||||||
| E.S.P./Pollution Problem | |||||||||
| Fuel Supply and Other Misc. Problems | |||||||||
| Other Misc. Problems | |||||||||
| Coal Shortage | |||||||||
| Total Fuel Supply and Other Misc. Problems | |||||||||
| Grid System | |||||||||
| Transmission Constraints/Grid Disturbance | |||||||||
| Reserve Shut Down /Low Schedule | |||||||||
| Total Grid System | |||||||||
| Total Miscellaneous | |||||||||
