Tamil Nadu Generation And Distribution Corporation Limited Tender
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Tamil Nadu Generation And Distribution Corporation Limited - TANGEDCO Tender
Machinery and Tools
Eprocure
Opening Date3 May 2023
Closing Date9 May 2023
Tender AmountRefer Documents
Costs
EMD
₹ 7,100Document Cost
Refer DocumentsTender Fee
Refer Documents
Description
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Contact
Tender Id
2023_EB_306253_1Bid Award Id
ViewTender No
CE / MTPS-I / SE / M-I / TM / OT. 54 /2023-24Tender Authority
Tamil Nadu Generation And Distribution Corporation Limited ViewPurchaser Address
-Website
http://https://www.tangedco.gov.in/
GEM & Bid Advisory Services
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Documents
MTPS I TM Unit III Overhauling of Valves in Feed Water Main Condensate and Extraction Steam lines during Annual Overhauling work 2023 24
MTPS I TM Unit III Overhauling of Valves in Feed Water Main Condensate and Extraction Steam lines during Annual Overhauling work 2023 24
MTPS I TM Unit III Overhauling of Valves in Feed Water Main Condensate and Extraction Steam lines during Annual Overhauling work 2023 24
BOQ Items
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Overhauling of GV 100 / 250 ATA III Gr. HO, GV 65 /250 ATA III Gr. MO/HO, GV 2.5”, 4" 2500 Class HO/MO valves Dismantling the valve, cleaning all the parts, checking the seating surfaces. Bearings. Lapping the gate and seat for perfect blue matching, Reassembling the valve with new self sealing ring and gland packings.
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Overhauling of GV 200 / 250 ATA M.O, GV 200 / 600 Class M.O ,SCNRV 400,600mm/ 150 Class GV 500,600mm/ 150 Class.
Dismantling the valve/NRV cleaning all the parts checking the seating surfaces and actuator bearings, Lapping the gate / seat / flap for perfect blue matching, Reassembling the valve with new self sealing ring / bonnet gasket and gland packings.
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Overhauling of GV, GLV 200 / 40 ATA, HO/MO, SCNRV 250 / 300/ 40 ATA, Control valve 6" x 6" / 300 class, GV 250 / 40 ATA H.O, 2.5”, 4” / 150, 300 class. Dismantling the valve, cleaning all the parts, checking the seating surfaces and actuator bearings. Lapping the gate / seat / flap for perfect blue matching, Re-assembling the valve with new bonnet gaskets and gland packings.
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Overhauling of GV 300/ 16 ATA MO, GV 300/40 ATA HO, GLV 200/ 40 ATA MO, Control valve 10 ” x 10" / 300 class
Dismantling the valve, cleaning all the parts of the valve, checking the seating surfaces and actuator bearings. Lapping the gate / seat / disc / flap for perfect blue matching. Reassembling the valve with new bonnet gaskets and gland packings.
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Overhauling of NRV 100/250 ATA , GLV 100 / 40 , 16 ATA, GLV 4” / 600, 300 class HO / MO , SCNRV 150/ 40, 16 ATA, SRV 2.5 ”X4 ” / 300 Class , GV 350/125 class & 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. Reassembling the valve with new gland packing rings and bonnet gaskets without any leak. Checking the Actuator thrust base bearing and apply lubrication.
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Overhauling of GV / GLV 2" class 800, 1500, 2500 HO/MO valves Dismantling the valve, cleaning all the parts, Lapping the gate, disc with seat, for perfect blue matching. Reassembling the valve with new bonnet gasket and gland packings.
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Overhauling of GV/ GLV 1" class 800/1500/2500 HO/MO.
Dismantling the valve, checking the seating surfaces. Cleaning all the parts. Lapping the disc with seat for perfect blue matching. Reassembling the valves with new gland packings and bonnet gaskets.
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Changing of CRH (Left and Right) line flange and dummy flange gaskets. a) Providing the scaffolding arrangements. Disassembling the CRH line flange studs and dummy flange bolts. Removing the spacer flange for inspection.
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b) Cleaning the spacer flange at both sides and mating surface of the line flange, Dummy flange. Providing the gaskets and positioning the spacer flange, Reassembling the CRH line flange and du mmy flange by tightening the studs / bolts without any leak.
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Overhauling of control valve size 4”x2.5”/1500 class:
Dismantling the valve, cleaning all the parts, checking the seating surfaces Reassembling the valve with new Tech seal Bonnet, Tech seal for body, Stack, Gauge and gland packing. Checking and cleaning the Pneumatic actuator and lubrication to the bearings, fixing the actuator on the valve.
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Cleaning and painting:- Cleaning and painting of Main Condensate lines from hotwell to Gland Cooler-I.(Bus Green-Paint Under contractor scope)
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Enamel paint.
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Champion Make Style – 54 Super Metallic Compressed Asbestos fiber Jointing sheet confirm to IS 2712/1998, Grade W/1, Size 2000 x 1500 x 4mm for CRH (L&R) Flanges & Dummy flanges and ES -4, MC-36 & 37 valve bonnet
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Pure Graphite Die molded Gland Packing Rings to with stand a pressure of 200 Ksc and Temperature of 600oC density between 1.4 - 1.6 gm/cc and carbon content minimum 99.5 % (Full Ring) size: 41.3 – 17.2 – 12 mm for Feed water and Steam line 1” HO/MO drain line valves.
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Pure Graphite Die molded Gland Packing Rings to with stand a pressure of 200 Ksc and Temperature of 600oC density between 1.4 - 1.6 gm/cc and carbon content minimum 99.5 % (Full Ring) size: 55.6 – 27 – 13.5 mm for Feed water, Steam line 2” HO/MO drain line valves.
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Consumables and T& P Charges For Item Sl.No: 1 to 14
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