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| 1 | Preventive maintenance of expansion tank and its gauge glass | Preventive maintenance of expansion tank and its gauge glass |
| 2 | Checking , attending abnormal H2 gas leakage in 5X200MW Generators and its associated piping’s and H2 gas coolers. | Checking , attending abnormal H2 gas leakage in 5X200MW Generators and its associated piping’s and H2 gas coolers. |
| 3 | Preventive maintenance of 15.75KV bus duct inside T.G.hall: | Preventive maintenance of 15.75KV bus duct inside T.G.hall: |
| 4 | Changing excitation polarity in all 5X200MW units | Changing excitation polarity in all 5X200MW units |
| 5 | Preventive maintenance of slip ring carbon brushes, brush holder, neutral grounding transformer and reactor in 5X200MW units | Preventive maintenance of slip ring carbon brushes, brush holder, neutral grounding transformer and reactor in 5X200MW units |
| 6 | Dismantling and replacement of brush rocker assembly of slip ring for testing of rotor and remounting | Dismantling and replacement of brush rocker assembly of slip ring for testing of rotor and remounting |
| 7 | Preventive maintenance of earthing transformer and neutral grounding reactors of 5X200MW Units | Preventive maintenance of earthing transformer and neutral grounding reactors of 5X200MW Units |
| 8 | Isolation of 15.75KV bus duct outside T.G. Hall from man hole near A Axis wall for identification of stator EF: | Isolation of 15.75KV bus duct outside T.G. Hall from man hole near A Axis wall for identification of stator EF: |
| 9 | Preventive maintenance of seal oil filters, stator water filter, valves,H2 gas driers etc | Preventive maintenance of seal oil filters, stator water filter, valves,H2 gas driers etc |
| 10 | Attending leakage of oil from AC DC seal oil pumps including replacement of seal if required. | Attending leakage of oil from AC DC seal oil pumps including replacement of seal if required. |
| 11 | Preventive maintenance and greasing of bearings in A.C. seal oil pump in 5X200MW units | Preventive maintenance and greasing of bearings in A.C. seal oil pump in 5X200MW units |
| 12 | Preventive maintenance & hydraulic testing of H2 gas coolers. | Preventive maintenance & hydraulic testing of H2 gas coolers. |
| 13 | Preventive maintenance and hydraulic testing of seal oil coolers in 5x200MW units | Preventive maintenance and hydraulic testing of seal oil coolers in 5x200MW units |
| 14 | Decoupling, removal, remounting alignment and coupling of AC DC seal oil pumps | Decoupling, removal, remounting alignment and coupling of AC DC seal oil pumps |
| 15 | Preventive Cleaning work of 15.75 KV duct at 4 meter. | Preventive Cleaning work of 15.75 KV duct at 4 meter. |
| 16 | Reconditioning of all six no. 15.75KV bus duct perplex containers in 5x200MW units. | Reconditioning of all six no. 15.75KV bus duct perplex containers in 5x200MW units. |
| 17 | H2 gas purging and recharging | H2 gas purging and recharging |
| 18 | Monitoring and maintaining the level of hydraulic seal oil tank | Monitoring and maintaining the level of hydraulic seal oil tank |
| 19 | Normalizing seal oil system and draining oil from Gen. casing and hydraulic seal oil tank round the clock in emergency. | Normalizing seal oil system and draining oil from Gen. casing and hydraulic seal oil tank round the clock in emergency. |
| 20 | Filling H2 gas cylinders in Generator casing of 5x200MW units | Filling H2 gas cylinders in Generator casing of 5x200MW units |
| 21 | Bus separation from generator of all the three phases three neutrals, cleaning of seal off bushing | Bus separation from generator of all the three phases three neutrals, cleaning of seal off bushing |
| 22 | Cleaning Replacement of flexible links of phase neutral side of generator terminal as per scope of work | Cleaning Replacement of flexible links of phase neutral side of generator terminal as per scope of work |
| 23 | Work on seal oil stator water coller of 200MW Unit as per scope of work | Work on seal oil stator water coller of 200MW Unit as per scope of work |
| 24 | Replacement of defective Generator hydrogen gas cooler as per per scope of work | Replacement of defective Generator hydrogen gas cooler as per per scope of work |
| 25 | Replacement of defective float valve of Seal Oil Tank of as per scope of work | Replacement of defective float valve of Seal Oil Tank of as per scope of work |
| 26 | REPLACE VALVE NB 08 15 | REPLACE VALVE NB 08 15 |
| 27 | REPLACE VALVE NB 100 | REPLACE VALVE NB 100 |
| 28 | REPLACE VALVE NB 25 50 | REPLACE VALVE NB 25 50 |
| 29 | REPLACE VALVE PRES REG | REPLACE VALVE PRES REG |
| 30 | REPAIRING BRASS NOZZ H2 CO2 | REPAIRING BRASS NOZZ H2 CO2 |
| 31 | SERVICING AC DC SEAL OIL PUMPS | SERVICING AC DC SEAL OIL PUMPS |
| 32 | REPLACE BEARING SOP SOS | REPLACE BEARING SOP SOS |
| 33 | Replacement of defective float valve of expansion tank of as per scope of work | Replacement of defective float valve of expansion tank of as per scope of work |
| 34 | To Fro transportation of filled and empty hydrogen gas | To Fro transportation of filled and empty hydrogen gas |
| 35 | To Fro transportation of more than 100 nos. filled empty hydrogen gas and carbon-di-oxide gas cylinders in emergency (During odd hours) | To Fro transportation of more than 100 nos. filled empty hydrogen gas and carbon-di-oxide gas cylinders in emergency (During odd hours) |
| 36 | Preventive maintenance of GT cooling control cabinet, UATA , B MB etc. | Preventive maintenance of GT cooling control cabinet, UATA , B MB etc. |
| 37 | Preventive maintenance of PT cubical: | Preventive maintenance of PT cubical: |
| 38 | Preventive maintenance of stator water panel. | Preventive maintenance of stator water panel. |
| 39 | Preventive maintenance of seal oil panel. | Preventive maintenance of seal oil panel. |
| 40 | Preventive maintenance of Generator relay panel. | Preventive maintenance of Generator relay panel. |
| 41 | Work on SP Bus ducts of GT UAT Genreator | Work on SP Bus ducts of GT UAT Genreator |
| 42 | Breakdown maintenance of thyristor cooling fan excitation transformer cooling fan | Breakdown maintenance of thyristor cooling fan excitation transformer cooling fan |
| 43 | Dummy load testing in Excitation system. | Dummy load testing in Excitation system. |
| 44 | Repair AC stabilizer at Excitation room | Repair AC stabilizer at Excitation room |
| 45 | Repairing of field breaker trip coil. | Repairing of field breaker trip coil. |
| 46 | Preventive maintenance of field breaker | Preventive maintenance of field breaker |
| 47 | Preventive main excitation cooling equip | Preventive main excitation cooling equip |
| 48 | Preventive main thy. excitaion reg panel | Preventive main thy. excitaion reg panel |
| 49 | DISMANTLING OF AUX CONTACT BLOCK ASSY | DISMANTLING OF AUX CONTACT BLOCK ASSY |
