MPM I Unit III Overhauling and Reconditioning of Hot and Cold Air Dampers, Gates, Ducts, Expansion Joints, Seal Air Fan, Fly Ash Cleaning
TNEB Limited · Tamil Nadu · Civil Works & Infrastructure · open
Key facts
- EMD: ₹8K
- Published: 28 Sep 2026
- Closing date: 14 Oct 2026
- Status: open
- Office: Chief Engineer/TTPS Tuticorin
Description
Overhauling and reconditioning of hot and cold air dampers, gates, ducts, replacement of expansion joints, seal air fan, and cleaning of fly ash inside the hot air duct at TTPS Unit III, Tuticorin.
Eligibility & requirements
- Startup relaxation: No
- MSE relaxation: No
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Commercial terms
- Bid type: Item Rate
- Make in India (MII): No
- MSE preference: No
Line items (14)
- Charges for opening the manhole doors, dismantling the cold air damper links, Shaft, flaps, cleaning the above, applying grease, changing if necessary and assembling the above parts and confirming free movement of flaps etc. — Qty: 5 Nos
- Overhauling of Hot air damper. — Qty: 6 Nos
- Charges for dismantling the cold air gate, gear box, chain links and gates cleaning the above, applying grease changing the worn out parts and complete O/H of gear box and assembling the above parts and confirming free movement of gates etc. — Qty: 6 Nos
- Charges for welding of eroded and worn out portion of duct joints, and welded joints by welding with ms welding electrodes. — Qty: 150 Mtr
- Charges for eroded portion of hot air duct side walls by cutting, grinding and fabrication and welding new m.s plats. — Qty: 50 Sq.Mtr
- Charges for dismantling the bottom side knife edge gate valve assembly from tramp iron spout assembly, dismantling of tramp iron spout assembly, to facilitate release of knife edge gate valve at mill side (Top side) assembly from mill gear box after disconnect is the air line (pneumatic line) from knife edge gate valve, air valves box and air headers. Assembling back after overhauling of knife edge gate valve assembly. — Qty: 12 Nos
- Charges for dismantling worn out duct expansion joint from the hot & cold air duct, lifting, unloading from 4 mtr height and assembling of new or reconditioned expansion joint and devolution of scrap including the cost of consumables and T&Ps etc. — Qty: 6 Nos
- Charges for removal of accumulated fly Ash deposited inside the horizontal portion of the hot air duct at 4.5 mtr & 18 mtr area for the entire duct area. The collected ash to backed in gunny bags and disposed it to ash slurry trenches at ‘0’ mtr level. — Qty: 1 No
- Charges for dismantling of Seal Air Fan’s suction side reducer, removal of fan cover and impeller, dismantling the plumber block with shaft and changing the worn out parts like bearings and Plumber blocks, and reassembling them in position after aligning with the fan motor. Cleaning of air filter, inspection of suction & discharge dampers, cleaning the flanges and arresting of air leak if any. This includes charges for lead, lift and transporting of materials from and to stores. — Qty: 3 Nos
- Cost of Materials ( Contractor Scope ) Bearing No. 22213 K MB C3 W 33+H 313 Sleeve with Lock nut and lock washers without locations Ring. — Qty: 6 Sets
- Cost of Materials ( Contractor Scope ) M.S. Bolt, nut and 2Nos washer of size: M12x70mm Fth — Qty: 20 Kgs
- Cost of Materials ( Contractor Scope ) Asbestos Rope of various sizes (Size: 10mm thick withstanding Temp. 350deg C) — Qty: 15 Kgs
- Cost of Materials ( Contractor Scope ) Asbestos Rope of various sizes (Size: 8mm thick withstanding Temp. 350deg C) — Qty: 10 Kgs
- Charges for inspection, overhauling and commissioning of actuators for both manual and electrical operation in hot air dampers.
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