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 Date20 Jun 2023
Closing Date4 Jul 2023
Tender AmountRefer Documents
Costs
EMD
₹ 10,000Document Cost
Refer DocumentsTender Fee
Refer Documents
Description
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Contact
Tender Id
2023_EB_330012_1Bid Award Id
ViewTender No
CE / MTPS-I / SE / M-I / MP / OT.189 /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 Mill Plant IV Complete inspection of Mill internals reconditioning renewal of worn out parts bearings replacement of worn out worm wheel with worm shaft and renewal of worm gear hub Mill bottom Mill bottom cover plate etc
MTPS I Mill Plant IV Complete inspection of Mill internals reconditioning renewal of worn out parts bearings replacement of worn out worm wheel with worm shaft and renewal of worm gear hub Mill bottom Mill bottom cover plate etc
MTPS I Mill Plant IV Complete inspection of Mill internals reconditioning renewal of worn out parts bearings replacement of worn out worm wheel with worm shaft and renewal of worm gear hub Mill bottom Mill bottom cover plate etc
BOQ Items
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Charges for dismantling of clamping ring, removing the worn out bull ring segment, cleaning threaded holes using M24 tap set, preparing the bowl for fixing bull ring segments, assembling the bull ring segments, making wedges if necessary, fixing the clamping ring and bowl hub cover
1
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charges for dismantling of journal door and roller assembly after disconnecting seal airline and assembling the same as before, after attending works inside the mill & setting ring roller clearance
3
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Charges for arresting the coal pipe firmly, dismantling victaulic coupling and lowering down the mill outlet elbows to 4.5 m. floor including charges for scaffolding.
4
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Charges for consumables and T & Ps
1
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Charges for Renewal of thrust bearing adopter by oil heating and using necessary fixture for assembling the adopter in correct position after positioning the shims below the worm gear hub lock nut. Removing the bearing thrust bearing adopter (worn out) and assembling the new adopter by heating.
1
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Charges for gas heating the bowl and bowl hub assembly using 3 Nos. cutting set in order to expand the bowl hub for releasing it from the vertical shaft and also providing ice bag in the vertical shaft above the upper radial bearing to cool the shaft portion.
1
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Charges for dismantling the flexible coupling bolts, flexible coupling (worm shaft only), distance piece, unscrewing the worm shaft extension cover bolts and bearing housing cover bolts, removing the worm shaft extension cover, lowering to ground floor, releasing the worm shaft assembly from its position and lowering to ground floor and providing back the overhauled worm shaft assembly in the gear box and fitting back the worm shaft extension cover, bolting and tightening the bolts to the required torque level and assembling back the flexible coupling bolts, distance piece etc.
1
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Charges for checking the axial and radial misalignment between the motor and mill worm shaft by making use of 3 Nos. dial gauges, mounting the dial gauge fixtures on the shaft and setting the dial gauges on the fixtures and adjusting the motor and completing the alignment within the prescribed limits.
1
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Charges for inspection of mill outlet elbows and changing the deflector block if any lifting the elbows and assembling with proper alignment with the existing pipe line and removing coal pipe supports and devolution of scraps to stores.
4
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Charges for removing the old coupling halves from the motor and worm shaft ends. The charges includes gas heating the new/old coupling halves in the motor shaft and worm shaft and assembling the new/ old coupling in motor shaft and worm shaft.
1
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Charges for cutting and removing the existing worn out airport ring assembly and erecting new/old airport assembly.
1
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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/old bearing in oil bath and providing the new / old bearing in the worm shaft in proper position.
1
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Charges for Dismantling of separator body top along with classifier assembly and reassembling the separator body top as per direction of engineer in charge. This includes making the fixture for lifting arrangements, lead, lift retaping and cleaning the threaded holes in the flange etc.
1
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Charges for cleaning the gearbox internals like worm shaft and worm wheel. Draining the cooling water from cooling coil, cleaning and inspection of worm wheel teeth, cleaning the cooling coil and reconditioning the coil. Arresting the leakages in the water line, assembling back the cooling coil covers, filling the gearbox oil up to normal level.
1
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Cost of MS Welding electrodes
26
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Charges for Hard facing of clamping rings and bowl hub cover.
1
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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.
1
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Charges for Dismantling of mill bottom after removing broken M 24 size –16 Nos. bolt by drilling / gouging, tapping all the holes and assembling as per the direction of Engineer in charge. This includes making necessary fixture and supporting for lifting arrangements and lead, lift and transporting of materials from stores, reaming of holes in the mill bottom etc.
1
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Charges for dismantling the radial bearing after removing the oil pump hub and oil pump bushing and reassembling the new / old radial bearing in the new/old radial bearing housing and assembling the new/old pump hub and bushing.
1
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Charges for draining of Mill gearbox oil completely, cleaning the gearbox internals like worm shafts and worms wheel. After inspection filling the gearbox with new/old oil including devolution of old oil to stores etc, (Department vehicle will be provided for drawl of oil at free of cost)
1
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Charges for dismantling the Spool pieces, multiple port outlet bodies and transition pipes 4 Nos. each after assembling the coal pipe inspection with center feed pipe structures including transportation of supporting material from stores to site and re-fixing the Spool piece, MPO bodies and transition pieces and assembling to its original position and carrying out necessary related works. and devolution of scraps to stores etc. for a mill.
1
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Charges for hard facing the Airport ring assembly segments (6Nos) and bowl extension rings (6 Nos.)etc.in one mill
1
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Charges for Dismantling of bowl hub with bowl from the vertical shaft and assembling new bowl and bowl hub as per the direction of engineer in charge. This includes making necessary fixture and supporting for lifting arrangements and lead, lift and transporting of materials from stores, reaming of holes in the bowl and bowl hub etc.
1
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Charges for dismantling of Gear housing cover with Upper bearing housing and if necessary to replace the broken M24 studs completely removing, tapping all the holes and assembling back.
1
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Charges for dismantling and removing worn out thrust bearing of Mill vertical shaft by gas heating the racer cleaning the bearing seating area in the vertical shaft and assembling back new thrust bearing after heating the racer in oil bath.
1
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Charges for Removal of worn out / eroded 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.
1
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Charges for Dismantling of upper skirt assembly, lower skirt assembly, Mechanical face seal assembly dust guard and blue matching of seal runner renewal of seal bronze, air seal, dismantling of Mill bottom cover, upper bearing housing cover, oil seals etc., Complete overhauling, assembling back and providing old/new lower skirt assembly, scrapper assembly and arresting the oil leakages in the return line and also spillage’s and the rear side of gearbox to prevent Mill fire and cleaning and tapping the threaded hole wherever necessary.
1
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Charges for renewing radial bearing in the worm shaft after gas heating and releasing the old bearing land providing new / old bearing in the worm shaft after heating the bearing in oil bath.
1
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Cost of Cutting gas
5
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Charges for tapping the upper skirt assembly fixing new holes M24x16 Nos and cleaning the tapped holes M24x16 Nos provided for fixing clamping ring in bowl hub and bowl hub cover (M16x8 Nos)
1
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Charges for providing wedges between lower skirt and Mill insulation cover plate, firmly, removal of gearbox bottom cover flange bolts, lowering the thrust bearing and pump housing after supporting lower radial bearing housing. Lowering the thrust bearings and reassembling of all the above parts if necessary providing SS shims at the bottom cover flange. Blue matching the worm shaft and worm wheel engagement till we get 20 to 50% pattern by trial method releasing/ providing thin SS shim sheet at the bottom cover flange and to get proper running clearance and centering of engagement.
1
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Charges for dismantling of upper bearing housing cover with bearing housing, removing the vertical shaft along with upper radial bearings, lower bearings, worm wheel, dismantling of worn out worm wheel and changing new worm wheel and inserting the vertical shaft after inspecting the bearings, providing wedges for the vertical shaft lock nut and fitting as per direction of engineer in charge. This includes making suitable fixture for lifting arrangements
1
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Charges for mounting and demounting the bowl with hub assembly by using overhead hoist and setting with necessary fixture arrangement on heavy duty precision lathe to rough machining the bore for welding.
1
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