| Forced Outages and Energy Losses Due to Failure of Equipment and Auxiliaries in Thermal Power Stations (Capacity 660-800 MW) in India (2013-2014 and 2014-2015) | ||||||
| Areas/Causes of Outages | No. Outages | MU Loss | %age of Group FO Loss | |||
| 2013-2014 | 2014-2015 | 2013-2014 | 2014-2015 | 2013-2014 | 2014-2015 | |
| I. Equipments | ||||||
| A. Boiler | ||||||
| Water Wall Tube Leakage | ||||||
| Super Heater Tube Leakage | ||||||
| Reheater Tube Leakage | ||||||
| Economiser Tube Leakage | ||||||
| Air Preheater Problem | ||||||
| Furnace Trouble | ||||||
| Boiler Operation Problems | ||||||
| (a) Furnace Fire Out /Flame Failure | ||||||
| (b) Furnace Draft Abnormal | ||||||
| Others | ||||||
| Total Boiler | ||||||
| B. Turbine | ||||||
| Turbine Bearing Problem | ||||||
| Governing/Oil System Problem | ||||||
| Turbine Diffrential Expansion Problem | ||||||
| Turbine Axial Shift /Thrust Pad Problem | ||||||
| Turbine Eccentricity/High Vibration | ||||||
| Turbine Rotor Failure/Damaged | ||||||
| Turbine Control Valve Problem | ||||||
| Condenser Tube Leakage/Cleaning | ||||||
| Main Steam Line Problem | ||||||
| Emergency Safety Valve Closure | ||||||
| Condenser Low Vacuum | ||||||
| H.P. and L.P. Bypass System | ||||||
| Turbine Misc. Problems | ||||||
| Total Turbine | ||||||
| C. Generator | ||||||
| Stator/Stator Earth Fault | ||||||
| Rotor/Rotor Earth Fault | ||||||
| Gen. Transformer Tripping/Damaged | ||||||
| Excitation Problem | ||||||
| Gen. Cooling System Failure | ||||||
| Seal Oil System Problem | ||||||
| Fire in Turbo Generator 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 Uxiliaries | ||||||
| I.D. Fans Problem | ||||||
| F.D. Fans Problem | ||||||
| P.A. Fans Problems | ||||||
| Milling System /RC Feeder Problem | ||||||
| Pipes and Valves Boiler Side | ||||||
| Boiler Aux. Misc. Problems | ||||||
| Total Boiler Auxiliaries | ||||||
| B. Turbine Auxiliaries | ||||||
| Boiler Feed Pump/Motor Problem | ||||||
| Condensate Pump Problem | ||||||
| C.W. Pump Problem | ||||||
| Regenerative System Problem | ||||||
| Turbine Pipes & Walve Problem | ||||||
| Desecrator Problem | ||||||
| Turbine Misc. | ||||||
| Total Turbine Misc. | ||||||
| Total Boiler and Turbine Aux. | ||||||
| III. Other Misc., Mech. And Elect Problem | ||||||
| A. Other Electrical Problem | ||||||
| Unit Aux. Transformer/Station Transformer Problem | ||||||
| Gen. Transformer Tripping/Damaged | ||||||
| H.T./L.T. Supply Problem | ||||||
| D.C. Supply Problem | ||||||
| Switch Yard/ Bus Bar Problem | ||||||
| Breaker/Isolator Problem | ||||||
| Fuel Supply and Other Misc. Problem | ||||||
| Electrical Miscellaneous Problem | ||||||
| Total Other Electrical Problem | ||||||
| Fuel Supply and Other Misc. Problems | ||||||
| Coal Feeding Problem | ||||||
| Light Feeding Problem | ||||||
| Ash Handling System Problem | ||||||
| Raw Water Problem | ||||||
| Non-readiness of Residual Work of New Unit | ||||||
| Vintage Unit Withdrawn and Closed For Operation | ||||||
| Fuel Supply and Other Misc. Problem | ||||||
| Other Misc. Problem | ||||||
| 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 | ||||||
