Tamil Nadu Generation And Distribution Corporation Limited Tender
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Tamil Nadu Generation And Distribution Corporation Limited - TANGEDCO Tender
Eprocure
Opening Date26 May 2021
Closing Date8 Jun 2021
Tender AmountRefer Documents
Costs
EMD
₹ 9,600Document Cost
Refer DocumentsTender Fee
Refer Documents
Description
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Contact
Tender Id
2021_EB_201443_1Bid Award Id
ViewTender No
SE/O/TTPS/Spec.No.74/21-22Tender 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
TTPS Operation Circle MPM II Unit IV Overhauling of mill, gear box, under bowl, mill outlets, classifier assembly etc and painting in Mills 4A, 4B and 4C during 2021 annual overhaul
TTPS Operation Circle MPM II Unit IV Overhauling of mill, gear box, under bowl, mill outlets, classifier assembly etc and painting in Mills 4D, 4E and 4F during 2021 annual overhaul
BOQ Items
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Charges for checking the bearing clearance after dismantling the thrust bearing and radial bearing housing covers, removing the bushes, springs etc. thoroughly cleaning the bearing housings and other components inspecting the thrust bearings, resetting the axial clearance by reducing the thickness of shims in the thrust bearing housing cover, providing of new shims and by trial method adjusting the clearance to 0.10 mm to 0.15 mm. Assembling back the thrust and radial bearing housing properly and renewing the gland studs and gland packing in the worm shaft assembly.
3
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Charges for changing the worm shaft thrust bearing after gas heating and releasing the old bearings from the worm shaft, heating the new bearing in oil bath and providing the new bearing in the worm shaft in proper position.
3
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Charges for renewing radial bearing in the worm shaft after gas heating and releasing the old bearing and providing new bearing in the worm shaft after heating the bearing in oil bath.
3
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Charges for removing (by gas cutting) the eroded spout segments liner from the inner cone and reconditioned the spout segments and refixing the spout segments liner without gap as per the direction of Engineer in charge. This includes the transportation of materials from and to stores and consumables.
3
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Charges for dismantling the wornout spool pipe and MPO (each 4 Nos.) after supporting the relevant coal pipes firmly and disconnecting the victaulic coupling, air line and other accessories and replacing of liner, old /new victaulic coupling gaskets, replacement or inverting the orifice and re-fixing MPO, MDV or spool pipes as per the direction of Engineer in charge. The work includes lead, lift of materials from `0’ meter and devolution of scraps to stores and cost of consumables such as cutting gas, welding electrodes etc.,
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Dismantling of worn out classifier assembly, inspection of deflector blade, cleaning, replacing of worn out deflector blade components renewal and assembling of new classifier assembly with its links. The overhauled classifier assembly was checked from 0 to 6 positions and ensured that the deflector blades, links move correspondingly to its position without any malfunction.
3
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Charges for dismantling the centre feed pipe from mill top to transition piece lowering down and placing it in the specified area. Cutting the wornout portion and reconditioning with new/old pipe aligning with the mill and fitting in the correct position as per the direction of Engineer incharge, necessary scaffolding platform and support to be provided by the contractor. This includes consumables and transport of materials from stores and devolution of scrap to stores.
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Charges for dismantling the centre feed pipe from mill top to dresser coupling lowering down and placing it in the specified area, cutting the worn out portion and reconditioning with new/ old pipe aligning with the mill and fitting in the correct position as per the direction of Engineer-in-charge, necessary scaffolding platform and support to be provided by the contractor. This includes consumables and transport of materials from stores and devolution of scrap to stores.
1
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Charges for dismantling the worn out lower portion of center feed pipe hoper, lowering the same from about 14mtr level, transportation the new/ reconditioned center feed pipe hoper lower from stores and lifting, fixing the same as per the requirement and as per the direction of engineer in charge. Necessary scaffolding platform and supports to be provided by the contractor. This includes the cost of consumables & hire charges for T&P’s.
1
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Charges for dismantling and lowering of wornout vertical discharge coal pipe, changing the eroded pipe portion, collars etc., or replacement of pipe with new/ old distance piece if required and lifting and re-aligning the vertical pipe in the mill as directed by the Engineer incharge. This includes lead, lift consumables such as cutting gas, M.S. Welding electrode etc.
12
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Charges for Removal of worn out side liner assembly and top liners, air intake vanes, etc. and assembling new liners including drawl of new liners from stores and devolution of old liners to stores.
6
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Charges for dismantling of lub oil cooler from Lub oil system, cleaning flushing the cooler oil pipe lines, water pipe lines, oil separator tank, checking of water line valves and nipple, replacement of wornout parts and reassembling the same conducting pressure test of cooler bundle for any tube puncture and plugging if necessary or changing the cooler bundle as per the instruction of site Engineer in charge. Checking of joy coupling L 110 of motor and pump alignment lub oil pump & motor after cleaning the bed portion and adding / removal of necessary shims of necessary conducting trial run after reassembling as per the direction of Engineers incharge including consumables welding electrode, etc.,
3
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Charges for complete painting of mill outer surface upto outlet elbow, tramp iron chute, under bowl, lube oil complete system and cooling water line near LOP system with one coat of good quality of enamel paint, painting the outlet distance pipes, MPO & spool pipes, outlet elbows with two coat of Heat Resisting Aluminium paint after cleaning with wire brush and emery sheet as per the direction of engineer in charge including the cost of paint and consumables etc., a) For Enamel painting of other mill surface.
291
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Charges for complete painting of mill outer surface upto outlet elbow, tramp iron chute, under bowl, lube oil complete system and cooling water line near LOP system with one coat of good quality of enamel paint, painting the outlet distance pipes, MPO & spool pipes, outlet elbows with two coat of Heat Resisting Aluminium paint after cleaning with wire brush and emery sheet as per the direction of engineer in charge including the cost of paint and consumables etc., b) For HR aluminium painting of coal pipe.
274
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Charges for lifting the bowl hub, bowl along with the bull ring segments and vertical shaft by hydraulic jacks, clamping the thrust bearing with fixtures and removal of shims and releasing the jacks, checking blue match, radial run out, back lash as directed by the Engineer incharge, including the cost of consumables.
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Charges for fixing of new venturi vane and assembling the venturi outlet assembly, venturi outlet conical collar assembly with coal feed pipe and the mill top.
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Charges for dismantling the inner cone assembly from the classifier cylinder by providing chain blocks, dismantling all the bolts and nuts, cutting the cone into three pieces vertically and removing the inner cone through the journal door and devolution of relieved scraps to stores.
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Charges for new/ reconditioned inner cone with ceramic tiles, lifting to mill floor [2.5m elevation] providing chain blocks, pull lifts and pushing in the inner cone segments [3 segments] into the mill, lifting, positioning and fixing them with the classifier cone and tightening all bolts and nuts.
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Charges for edge preparation of the slanting joints of the 3 segments of inner cone and joining them by welding 3 runs with MS electrodes and grinding & finishing the joint portions smoothly.
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