Tender For Nctps Ii - Mi Circle Bm - 600Mw - Unit-I Boiler - Annual Overhaul - Rectification Of Defective Tubes In Boiler Interpass Area (Reheater, Rear Arch Slope, Water Wall Screen Tubes, Hanger Tubes & Side Extension Wall) & Second Pass Area (Ltsh
Tender Value
Ref. Documents
Estimated cost
Bid Submission
09 Nov 2026
7 days left
EMD
39100
Bank guarantee accepted
Document Fee
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Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
Thiruvallur → Tamil Nadu
EMD Exemption
Available
Quantity
Not Available
Website
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Address
Project Description
Tender for Nctps Ii - Mi Circle Bm - 600Mw - Unit-I Boiler - Annual Overhaul - Rectification Of Defective Tubes In Boiler Interpass Area (Reheater, Rear Arch Slope, Water Wall Screen Tubes, Hanger Tubes & Side Extension Wall) & Second Pass Area (Ltsh, Eco, Ltsh Terminal Tubes, Steam Cooled Wall Tubes, Back Pass Screen Tubes & Support Tubes) During Aoh Of 2026-27.
BOQ
| Sl. No. | Item Description |
| 1 | I) Rectification of defective tubes in Boiler Inter pass Area:Providing special type platform to access the Re-heater coils for the entire re heater bottom area and water wall screen tube area for facilating Oxide scale thickness & Tube Thickness measurement and renewal of efective tubes. The charges for transportation of scaffolding materials and consumables to the boiler rear arch slope area, erecting the (64mtrs height x 3 mtrs width) scaffolding and temporary platform for facilitating attending the above work. After completion work, removing the scaffolding and temporary platform from the area and shifting back the scaffolding materials. Charges inclusive of T&P's and consumables. |
| 2 | Replacing of Oxide scale deposited tubes /bends by new bends/ tubes : Cutting and removing of Oxide scale deposited re-reheater tubes / bends by arc cutting by using special electrodes for a affected length portion from the coil assembly, edge preparation of tube ends , Positioning and new tubes/ bends by tag welding.Welding the tube joint with IBR welder.(argon gas, welding generator, TIG set and special welding electrodes will be the scope of contractor.) Charges inclusive of cost of consumables and T&Ps. |
| 3 | Fabrication charges for making bends (Tube size Ø 63.5mm outer dia) in Water wall Screen tubes: charges for marking, cutting , sizing and bending the tube (Ø63.5mm outer dia) to the required size and shape including cost of consumable and T&P's. |
| 4 | Replacing of failed / eroded water wall screen tubes /bends by new bends/ tubes : Cutting and removing of failed / eroded water wall screen tube (Dia 63.5 mm) tubes / bends by gas cutting for a affected length portion from the water wall screen tubes, edge preparation of tube ends , Positioning and new tubes/ bends by tag welding.Welding on the tube with IBR welder.(argon gas, welding generator, TIG set and special welding electrodes will be the scope of contractor.) Charges inclusive of cost of consumables and T&Ps. |
| 5 | Charges for fixing shrouding at erosion prone Boiler water wall screen tubes & bends by Tag welding. |
| 6 | Strengthening of existing joints: Charges for identification of less eroded existing joints in side extension wall at reaheater area tubes & Rear arch slope tubes. This work including transportation of tools and plants and consumables, grinding less eroded joints and strengthening the joints by welding with IBR welder. |
| 7 | II) Rectification of defective tubes in Boiler Second pass Area: Marking of defective LTSH tubes identified, during tube thickness survey, transportation, of T&P’s gas and consumables, cutting of defective portion of tubes edge preparation, welding of new spool piece with IBR welder and assisting for hydraulic test. Charges inclusive of consumables, argon gas and T&P's. |
| 8 | Charges for renewal of defective boiler of Economizer coil tubes of size 38.1mm OD inclusive of transportation, cutting of defective portion of tubes edge preparation, welding of new spool piece with IBR welder and assisting for hydraulic test. |
| 9 | FIN/SEAL WELDING BY IBR WELDER: Fabrication, grinding, welding with arrangement of scaffolding for welding of fin / seal plates in the boiler second pass steam cooled wall and other areas of boiler to arrest the ash leakage/air ingression wherever required. Charges inclusive of cost of T&P’S and consumables(fin welding to be done by IBR welder) |
| 10 | Charges for fixing shrouding at erosion prone Boiler Back Pass Screen tubes & bends by Tag welding. |
| 11 | Providing special type platform to access the tubes connecting LTHS coil to header / Economizer coils to header and back pass screen tube area for facilitating tube thickness measurement and renewal of defective tubes. The charges for transportation of scaffolding materials and consumables to the boiler rear arch slope area, erecting at 64mtrs height for a width of 3 mtrs, scaffolding and temporary platform for facilitating attending the above work. After completion work, removing the scaffolding and temporary platform from the area and shifting back the scaffolding materials. Charges inclusive of T&P's and consumables. |
| 12 | Replacing of failed Back pass screen tubes /bends by new bends/ tubes : Cutting and removing of failed back pass screen tube (Dia 51 mm) tubes / bends by gas cutting for a affected length portion from the coil assembly, edge preparation of tube ends, Positioning and new tubes/ bends by tag welding.Welding on the tube with IBR welder.(argon gas, welding generator, TIG set and special welding electrodes will be the scope of contractor.) Charges inclusive of cost of consumables and T&Ps. |
| 13 | Fabrication charges for making bends (Tube size Ø 51mm outer dia) in screen tubes : Charges for marking, cutting , sizing and bending the tube (Ø 51mm outer dia) to the required size and shape including cost of consumable and T&P's Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Oct 26, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedNov 09, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 7 daysNov 10, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 8 daysTender Documents
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