| Forced Outages and Energy Losses Due to Failure of Equipment and Auxiliaries in Thermal Power Stations (Capacity 25-99 MW) in India (2012-2013 to 2014-2015) | |||||||||
| Area/Causes of Outage (25-99 MW Cap. Group) | No. of Outage | MU Loss | %age of Group F.O Loss | ||||||
| 2012-2013 | 2013-2014 | 2014-2015 | 2012-2013 | 2013-2014 | 2014-2015 | 2012-2013 | 2013-2014 | 2014-2015 | |
| I. Equipments | |||||||||
| A. Boiler | |||||||||
| Water Wall Tube Leakage | |||||||||
| Super Heater Tube Leakage | |||||||||
| Reheater Tube Leakage | |||||||||
| Economiser Tube Leakage | |||||||||
| Air Preheaters | |||||||||
| Furnace Trouble | |||||||||
| Boiler Operational Problems | |||||||||
| (a) Furnace Fire Out/Flame Failure | |||||||||
| (b) Furnce Draft Abnormal | |||||||||
| (c) Drum Level High/Low | |||||||||
| Others | |||||||||
| Total Boiler | |||||||||
| B. Turbine | |||||||||
| Turbine Bearing Problem | |||||||||
| Governing/Oil System Problem | |||||||||
| Turbine Differential Expansion Problem | |||||||||
| Trubine Axial Shieft/Thrust Pad Problem | |||||||||
| Turbine Eccentricity/High Vibration | |||||||||
| Turbine Rotor Failure/Damaged | |||||||||
| Turbine Control Valve Problem | |||||||||
| Condenser Tube Leakage/Cleani | |||||||||
| Main Steam Line Problem | |||||||||
| Emergency Safety Valve Closure | |||||||||
| Condenser Low Vaccum | |||||||||
| H.P and L.P Bypass System | |||||||||
| Trubine Misc. Problem | |||||||||
| Total Turbine | |||||||||
| C. Generator | |||||||||
| Stator/Stator Earth Fault | |||||||||
| Rotor/Rotor Earth Fault | |||||||||
| Gen. Transformers Tripping/Damaged | |||||||||
| 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 Miscllaneous 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 | |||||||||
| Pipes and Valves Boiler Side | |||||||||
| Bolier Aux. Misc. Problems | |||||||||
| Total Boiler Aux. | |||||||||
| B. Trubine Auxiliaries | |||||||||
| Boiler Feed Pump/Motor Problem | |||||||||
| Condensate Pump Problem | |||||||||
| C.W. Pump Problem | |||||||||
| Regenerative System Problem | |||||||||
| Turbine Pipes and Valves Problem | |||||||||
| Deaerator Problem | |||||||||
| Turbine Misc. | |||||||||
| Total Turbine Aux. | |||||||||
| Total Boiler and Turbine Aux. | |||||||||
| III. Others Misc. Problem | |||||||||
| A. Other Electrical Problem | |||||||||
| Unit Aux. Transformer/Station Transformer Problem | |||||||||
| Gen. Transformer Tripping/Damaged | |||||||||
| H.T./L. T. Supply Problem | |||||||||
| DC Supply Problem | |||||||||
| Switch Yard/Bus Bar Problem | |||||||||
| Breaker/Isolator Problems | |||||||||
| Misc. Fire Hazards/Fire in Cable Gallery | |||||||||
| Fuel Supply and Other Misc. Problems | |||||||||
| Air Supply Problem | |||||||||
| Electrical Miscellaneous Problems | |||||||||
| Total Others Electrical Problems | |||||||||
| B. Fuel and Other Misc. Problem | |||||||||
| Coal Feeding Problem | |||||||||
| Lignite Feeding Problem | |||||||||
| Wet/Poor Quality Coal | |||||||||
| Fuel Oil Problem | |||||||||
| Cooling Tower Problem | |||||||||
| Ash Handling System Problem | |||||||||
| Raw Water Problem | |||||||||
| D.M Water Problem | |||||||||
| E.S.P Problem | |||||||||
| E.S.P./Pollution Problem | |||||||||
| Non-Readiness of Residual Works of New Unit | |||||||||
| Vantage Unit Withdrawn and Closed for Operation | |||||||||
| Fuel Supply and Others | |||||||||
| Other Misc. Problems | |||||||||
| Coal Shortage | |||||||||
| Total Fuel Supply and Other Misc. Problem | |||||||||
| C. Grid System | |||||||||
| Transmission Constrasalnts/Grid Disturbance | |||||||||
| Reserve Shut Down | |||||||||
| Total Grid System | |||||||||
| Uneconomical Operation | |||||||||
| Total Miscellaneous | |||||||||
