Tamil Nadu Generation And Distribution Corporation Limited-TANGEDCO has published Ttps – Mech.Ii – Tm I - Unit-I – Overhauling Of Turbine Lub Oil System, Seal Oil System, Valves And Equipments During The Forthcoming Overhaul. Submission Date for this Tender is 31-07-2023. Air Compressor Tenders in Tuticorin Tamil Nadu. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Overhauling OF SEAL OIL COOLER : Draining of oil from SOC, shifting oil barrels, after attending hydraulic testing of tube nest top up oil to MOT through centrifuge etc. |
| 2 | Dismantling of top water box, brush cleaning of all tubes, hydraulic testing of tube nest, plugging of punctured tubes, cleaning of top and bottom water box, cleaning of all flange seating areas, providing new oil and water gaskets, assembling and tightening of all parts and charging of oil & water side etc. |
| 3 | OVERHAULING OF LUB OIL COOLERDismantling of existing Turbine Lub oil cooler top water box ,Draining of oil from LOC ,cleaning of tube nest and shiftingoil barrels after overhaulingof tube nest and tup up oil to MOT through centrifuge. |
| 4 | Inspection of LOC/SOC Bottom water box:Inspection of LOC/SOC Bottom water box & rectification work including cost of welding rods,epoxy paints etc. |
| 5 | Inspectionand cleaning of MOT: Draining the oil to clean oil tank through centrifuge,Removal of MOT strainers, Cleaning the tank after removing the slag,Drawal of new oil and devolution of empty barrel,Topping up of oil from clean oil tank through centrifuge. |
| 6 | Overhauling of clean oil tank: complete cleaning of slag and painting of internals. |
| 7 | Overhauling of NRV Overhaulingof PNRV 100/250 ATA , GLV100 / 40 , 16ATA, GLV 4” / 600, 300class HO / MO , SCNRV 150/ 40, 16 ATA,SRV 2.5 ” X4 ” / 300 Class ,GV 350/125class &GV 300/125 class, GV150/64 ATA HO, SCNRV 350/125 class : Dismantling the valve, cleaning all the parts, checking the seating surfaces, bearing, yoke bush etc., Lapping the gate/seat/disc/flap for perfect blue matching. Re-assembling the valve with new gland packing rings and bonnet gaskets without any leak. Checking the Actuator thrust base bearing andapply lubrication. |
| 8 | Overhauling ofGV 150/64, 40, 16 ATA HO, GV 6 "/ 600, 300, 150 class HO, GLV150 /40 ATA ,GLV 6 ” / 300 class HO/MO, SCNRV 200/40, 16 ATA. Dismantling the valve, cleaning all the parts, checking the seating surfaces, bearing, yoke bush etc., Lapping the gate/seat/disc/flap for perfect blue matching. Re-assembling the valve with new gland packing rings and bonnet gaskets without any leak. Checking the Actuator thrust base bearing andapply lubrication. |
| 9 | Overhauling of GV 150/64, 40, 16 ATA HO, GV 6 "/ 600, 300, 150 class HO, GLV150 /40 ATA ,GLV 6 ” / 300 class HO/MO, SCNRV 200/40, 16 ATA. Dismantling the valve, cleaning all the parts, checking the seating surfaces, bearing, yoke bush etc., Lapping the gate/seat/disc/flap for perfect blue matching. Re-assembling the valve with new gland packing rings and bonnet gaskets without any leak. Checking the Actuator thrust base bearing andapply lubrication. |
| 10 | Overhauling of GV 10"/1500 Class HO and PNRV 250/250 ATA, SCNRV 300/150 Class. GV/GVL 10 "/150 class,12 "/150,300 class. Dismantling the valve, cleaning all the parts, Checking the seating surface. Lapping the gate/seat & flap/disc for perfect blue matching. Reassembling the valves with new self sealing ring and bonnet gaskets and gland packing rings. |
| 11 | Overhauling of GV 20"(400/500mm) 150 class H.O : Dismantlingthe valve, cleaning all the parts, checking the bearings and seating surfaces. Lapping the gate / seatfor perfect blue matching. Re-assembling the valve with new bonnet gasket and packings. |
| 12 | Replacement of 400/500 mm Gate valve by Butterfly valve in lub oil cooler HDPE cooling water lines: This activities invloves dismantling of old valves from HDPE lines, position, aligning new valves with HDPE lines andtightening with flangesincluding rectification if any in the HDPE pipe ends. |
| 13 | Overhauling of vapour extraction fan :Dismantling of VEF complete assembly, Inspection and renewal of wornout spares and assembling and commissioning... . |
| 14 | Repair of FRP lining : Repair of FRP lining per sq.meter in thelub/seal oil coolers bottom water boxes including cost of FRP materials . |
| 15 | Inspection of couplingBearing and mechanical seal in AC lub Oil/ DC/ AC/DC seal oil pumpspump: Dismantling of bearing and mechanical seal assembly and renewal if required and assembling. |
| 16 | Cleaning and painting works including cost of paintings: Cleaning and painting ofMOT/LO/SO cooler strainer and related valves, pipelines in turbine oil system . |
| 17 | Repairing of gear pump in Turbine lub Oil centrifuge system: complete dismantling and renewal of wornout spares and assembling. |
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