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 Date17 Apr 2025
Closing Soon1 May 2025
Tender AmountRefer Documents
Costs
EMD
₹ 4,700Document Cost
Refer DocumentsTender Fee
Refer Documents
Summary
Mtps I Tm Unit Iii Renewal Of Gasket At Water Box Side Tube Nest Side Condensate Inlet And Outlet Flange Inspection And Cleaning Of Tube Nest And Hydraulic Testing Of Lph 3 4 Gc 1 Changing The Defective Valves Es 3 Etc
Description
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Contact
Tender Id
2025_EB_546448_1Tender No
CE / MTPS-I / SE / M-I / TM /OT.20 / 2025-26Tender 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 Renewal of Gasket at water box side tube nest side condensate inlet and outlet flange inspection and cleaning of tube nest and hydraulic testing of LPH 3 4 GC 1 Changing the defective valves ES 3 Replacement of defective Flash Tank
MTPS I TM Unit III Renewal of Gasket at water box side tube nest side condensate inlet and outlet flange inspection and cleaning of tube nest and hydraulic testing of LPH 3 4 GC 1 Changing the defective valves ES 3 Replacement of defective Flash Tank
BOQ Items
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d) Providing new gaskets for the tube nest and placing the tube nest inside the shell.
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e) Cleaning and checking of drip line Header Nozzle holes, Checking the tube nest for leak if any plugging of all punctured tubes, placing the water box on the tube nest and tightening of main flange, Condensate inlet and outlet flanges after providing new gaskets.
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Overhauling and Gasket renewal of Gland Cooler 1 a) Removal of Water box, flange bolts and nuts, Condensate inlet and outlet flanges, lifting the water box, placing it on the floor and cleaning of all flange surfaces.
(Tag.No. GC No. 1)
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b) Lifting of tube nest, Placing it on the floor, inspection, cleaning of tube nest and hydraulic testing etc.
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c) Providing new gasket, for the tube nest and placing the tube nest inside the shell
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d) Placing the water box on the tube nest and tightening the main flange, Condensate inlet and outlet flanges after providing new gasket
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Labour charges for replacement of valves, pipes, stubs, bends and Reducers by IBR welding works. Replacing the defective existing ES-3 Valve with spool piece by new valve Size GV 200mm / 250 ATA / MO, pipe size OD 219.1 X 6.35 mm thick.
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Stress Relieving charges for newly welded ES-3 valve welding joints of pipe size: OD 219.1 X 6.35 mm thick
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Checking and cleaning of new valves. Cutting the existing Valves of VDAS-122 of size 100 mm / 1500 Class, Edge preparation, positioning the valve with pipe lines, checking the alignment for welding by IBR welder with TIG and Arc welding as per IBR specification
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Stress Relieving charges for newly welded VDAS-122 welding joints of pipe size: 100 mm / 1500 Class (Rate for 1 sectional joint)
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Replacing the existing damaged Metallic expansion bellow of Flash tank-I vent line to condenser (Tag No- E-5) by a new Metallic expansion bellow and spool piece by cutting, edge preparation and NON IBR welding.
Cutting the damaged metallic expansion by providing necessary box type line support to arrest the movement of pipe line and removal of the chequered plate etc.
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Grinding the cutting surface of the pipe and edge preparation of the pipe at both sides, suit the new bellow and positioning the metallic expansion bellow in the line.
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Welding the both sides of the Metallic expansion bellow and providing the chequered plate, beams and removal of pipe supports.
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Charges for cutting, edge preparation and welding of spool piece (One Joint)
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Labour charges for replacement of valves, pipes, stubs, bends and Reducers by Non IBR welding works. Replacing the defective drain line valves or equivalent in Heater drip, condenser air, Auxiliary steam, and drain water lines etc by Non IBR welder.
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Gasket renewing for 250/300/350 mm valve, This work involves Removing the valve from line, Cleaning the flange surface on both sides, Preparation of gaskets for both ends, positioning the valve in the Line with gaskets and tightening the flange bolts & nuts. (Tag No: Deaerator Pressure Control Valve-1No - Total= 1 No)
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Transportation of valve from central store to site Transporting the valve and pipes from central store to Unit-II repair bay and repair bay to Unit-III work spot. (Tag No:- ES-3 Valve, D/A Pr.control Valve, VDAS-122, HD-14 &15)
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Cost of welding electrodes for IBR welding. (For Item Sl. No:10 & 12)
147
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Cost of welding electrodes for Non-IBR welding. (For Item Sl.No:18)
168
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Cost of Argon Gas used for cutting and preheating for welding work for Item Sl.No. 10 & 12
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Cost of Cutting Gas for cutting the pipes, valves & bends wherever necessary.
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SS Pipe Grade 304/ 4”/ OD-114.3x6mm Thick, length 220mm
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SS Elbow, Grade 304 /4”
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SS Reducer Grade 304 / 4”x 3”
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SS Reducer Grade 304 / 4”x 2”
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SS Pipe Grade 304 / 3”, length 60mm
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SS Pipe Grade 304 / 2”, length 60mm
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Consumables & T&Ps (Sl.No. 1 to 20)
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Evaluation Notes How It Works ?
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