Tamil Nadu Generation And Distribution Corporation Limited-TANGEDCO has published Tender For Nctps I Es Circle Em I Division S Dn Iv Time Bound Works Routine Maintenance And Breakdown Works Of Ht Motors Lt Motors And Batteries Chargers Of Turbine Auxiliaries Of All Three Units At Nctps I Site For 360 Days. Submission Date for this Tender is 16-02-2024. Electrical Maintenance Tenders in Thiruvallur Tamil Nadu. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Charges for cleaning of the outer surface of the 415V37 KW motor – 3 Nos. 55KW motor 6 nos and 415V, 2.2 KW Generator SOVEF motor 6 Nos., 2.2 KW stator water vac pump motor 6 Nos , 3.7 KW phosphate dosing pump motor 6 nos for all three units at NCTPS-I (Weekly maintenance) |
| 2 | Charges for cleaning the outer surface of 6.6 KV, 500 KW, CEP motor 6 Nos for all three units at NCTPS-I |
| 3 | Charges for cleaning the outer surface of 6.6 KV 3500 KW, BFP motor 9 nos for all three units at NCTPS-I |
| 4 | Cleaning of Batteries & chargers Cleaning of all battery cells & Measurement of cell voltage & Specific gravity for 220V, 24V, UPS 360V batteries (1388 Cells) |
| 5 | 1) Monitoring of all Battery chargers & Batteries daily 2) Measuring of pilot cell voltage & Specific gravity for 220V, 24V, & UPS 360V batteries 3) Recording charger voltage, charger amps, Battery amps and alarms in float and boost chargers. |
| 6 | 6.6KV, 3500KW, Boiler Feed pump motor Charges for Replacement of Boiler feed pump motor with spare motor Releasing the boiler feed pump motor. Charges for disconnection of power cables, space heater cables, earth connections, loosening of bed bolts, releasing the motor from its location. Removing of floor grills at 13.5 mtr level, providing adequate barricades as a safety measure and lift the motor from its location and keep it in a safe location at Repair bay |
| 7 | Overhaul of stator: Inspection and cleaning and checking of stator windings, fastening of the stator winding to the end ring and also the inter coil spacers and packing in the overhang portion of the windings, tightening the wedges, spraying one coat of Dr. Beck protective enamel varnish, Drying out the stator, preheating, checking the IR value, DC resistance and Tan delta. |
| 8 | Overhaul of rotor: Inspection and cleaning of released rotor, checking the position of stampings, cleaning of corroded parts, inspection of winding bars, cleaning of overheated and burnt places, applying one coat of Dr. Beck’s insulating varnish and drying out. |
| 9 | Erection of spare motor in the location. Charges for removal of floor grills at 13.5 mt level for erecting the motor, providing sufficient barricade as a safety measures, Lifting the spare motor from repair bay to BFP location, positioning and tightening of bed bolts, Connecting the power cables, space heater cables, earth connections etc and tightness checking (Replacement of Boiler Feed Pump Motor with spare motor) |
| 10 | Charges for dismantling the cooler cover, cleaning the cooler tubes by wire brush, air and water. Checking the cooler tubes for leak by, hydraulic testing at 4 kg/cm 2 pressure. Changing the gaskets and reassembling the cooler. Arresting of leaks by plugging the leaky tubes in the brass plugs (Fabrication and supply of brass plug under contractor scope) (Rectification of defects in Boiler Feed Pump motor cooler) |
| 11 | 500 KW CEP MOTORReplacement of failed CEP Motor with spare motor. (6.6KV, 500 KW CEP Motors) |
| 12 | OVERHAULING OF LT MOTORS: Motor capacity ranges from 30.1 to 50 KW (37KW Ash water supply pump motor) |
| 13 | Motor capacity ranges from 50.1 to 75 KW (55 KW Sea water booster pump motor) |
| 14 | 110 KW Auxiliary cooling water pump motor |
| 15 | Labour required for Metal filling, machining and repairing of worn out shafts/ Bearing seating surfaces on DE & NDE sides, checking of bearings housings, providing sleeves in the end covers on DE & NDE. |
| 16 | 150 KW Instrument Air compressor motor |
| 17 | CHARGES FOR REPLACEMENT OF FAILED LT MOTORS RANGES FROM 4.81 KW TO 15 KW:charges for disconnecting the power cable, releasing the motor from its bed, lifting, lowering and transporting the motor to a convenient location, removing of coupling pulley, refixing of coupling pulley after overhauling, transporting the motor to its location, lifting, lowering the motor and placing in motor bed and erection of motor, reconnecting the power cable and including coupling, alignment and coupling the motor with the compressor orpump (For the rating from 4.81 KW to 15 KW) |
| 18 | Charges for replacement of failed LT motors ranges from 30.1 KW to 160 KW:charges for disconnecting the power cable, releasing the motor from its bed, lifting, lowering and transporting the motor to a convenientlocation, removing of coupling pulley, refixing of coupling pulley after over hauling, transporting the motor to its location, lifting, lowering the motor and placing in motor bed and erection of motor, reconnecting the power cable and including coupling, alignment and coupling the motor with the compressor or pump ( For the rating from 30.1 KW to 160 KW) |
| 19 | Rewinding of LT motors: Charges for rewinding of 1.5 KW LT motors including replacement of new terminal block, new bearings, cooling fan and fan cover |
| 20 | Charges for rewinding of various LT motors ranging from 0.37KW to 0.75KW including replacement of new terminal block, new bearings, cooling fan and fan cover |
| 21 | Material charges for rewinding of 1.5 KW LT motor including Bearings, Terminal block,cooling fan and fan cover (retrieved copper will be retained by the contractor) less copper scrap value, less scrap value for damaged bearings |
| 22 | Material charges for rewinding of various LT motor ranging from 0.37KW to 0.75KW includingbearings, Terminal block, cooling fan and fan cover(retrieved copper will be retained by the contractor)less copper scrap value, less scrap value for damaged bearings |
| 23 | Consumables and Tools and plants |
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