Tamil Nadu Transmission Corporation Limited-TANTRANSCO has published Nctps – I - Se/Mi Circle – Aoh (23-24) - Bm Dn. – Unit I – Flue Gas Duct “B” Pass – Rectification Of Flue Gas Duct Portions From Aph Outlet To Before Mechanical Hopper Area During Annual Overhaul For The Year 2023-24.. Submission Date for this Tender is 12-07-2023. Duct Work Tenders in Thiruvallur Tamil Nadu. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | MS Plate 6 mm thick IS 2062, Grade B, Including Loading, transportation & Unloading. (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of Iron & Steel material and as per the direction of Engineer in charge) (The materials will be supplied by TANGEDGO if available at stores during execution of works) |
| 2 | 100 NB MS ERW Pipe, Confirming to IS 1239, Gr-Fe 330, Wall Thickness5.4 mm for duct supports. Make-Jindal/TATA/SAIL (Supply to the NCTPS stores. The contractor should inspect the site in overhaul to ascertain the actual requirement of Iron & Steel material and as per the direction of Engineer in charge) (The materials will be supplied by TANGEDGO if available at stores during execution of works) |
| 3 | Providing scaffolding arrangement for renewal / rectification works in flue gas duct portions from APH outlet to before Mechanical hopper area. Including cost of consumables and T&P’s. |
| 4 | Clearing the ash from Air pre heater hoppers and duct portion and disposals including cost of consumables such as gunny bags etc., |
| 5 | Cutting and removal of heavily eroded flue gas duct plates (Multilayer) from the parent plate, transporting & devoluting scrap to Central stores. |
| 6 | Transporting of 6 mm M.S/ Checkered plates from central stores to boiler area cutting into required size, leading, lifting, positioning on the eroded top portions of the duct wall after removal of wornout plates above 1.5 meter level and welding the same. Including cost of consumables and T&P’s.(The Required Iron & Steel materials is under Contractor scope) |
| 7 | Welding eroded initial welding joints in the flue gas duct at APH outlet to before Mechanical hopper area. Including cost of consumables and T&P’s. |
| 8 | Removing the existing eroded duct supports, supports for FG duct area and transporting of new pipes / Angles from Central stores / NCTPS, cutting into required size leading, lifting, positioning and welding. Including cost of consumables and T&P’s. (The Required Materials will be supplied by Contractor) |
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