Tender For Nctps-Iii - Mechanical- I Circle - Boiler Maintenance Division - Aph-‘A- Renewal Of Chocked Heating Elements Baskets In Hot End, Hot Intermediate End & Cold End And Overhauling Of Lube Oil System, Main Drive Assembly And Aph Soot Blower Sy
Tender Value
Ref. Documents
Estimated cost
Bid Submission
29 Oct 2026
2 days left
EMD
1.03 Lakhs
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-Iii - Mechanical- I Circle - Boiler Maintenance Division - Aph-‘A- Renewal Of Chocked Heating Elements Baskets In Hot End, Hot Intermediate End & Cold End And Overhauling Of Lube Oil System, Main Drive Assembly And Aph Soot Blower System, Renewal/ Reconditioning Of Metallic Expansion Joints In Flue Gas, Primary & Secondary Air Side, Removal Of Damaged Insulation, Cladding Sheet & Re Fixing And Plastering Of Refractory In Aph Guide Bearing Area Of Aph- A (Model :33.5Vimt2200(2500)720 Pa) During Long Shutdown/Overhauling Period.
BOQ
| Sl. No. | Item Description |
| 1 | Opening of all manhole doors, and closing manhole doors after completion work including changing of asbestos ropes and clamps in the doors. |
| 2 | Water washing of Air pre heater including cost of consumables and T & P’s etc. |
| 3 | Charges for removal of worn- out radial seal in both cold end / hot end,refixing with new HT bolts & nuts and positioning and checking clearance. |
| 4 | Charges for removal of worn-out/damaged bypass seals (complete assembly CE & HE) fixing and positioning properly with new seals. (Including transporting of new materials from stores to site and scraps from site to Stores). Including cost of consumables and T&P’s. |
| 5 | Charges for providing platforms (inside & out side of FG duct) to dismantling the Basket removal door at 26 mtr in APH flue gas inlet path, providing monorail & hoist arrangements to faccilitate for leading and removal basket through this Basket removal door and dismantling the platform, monorail & hoist, refixing the Basket removal door after completion of baskets renewal work including charges for consumables and T&P's |
| 6 | This work involves drawl of new Hot End /Hot intermediate heating elemants baskets (Height range 600 -850 mm and width range 192-1000mm) from NCTPS III stores by using crane and loading into the lorry, transporting and unloading the new Hot End / Hot intermediate heating elements baskets at '0' mtr level in Boiler area and these new Hot End and Hot intermediate heating elemants baskets lifting one by one from '0' mtr level to 26 mtr elevation by using electric motor winch and these lifted new baskets are kept in APH are platform then and dismantling the exsting chocked/deteriorated / eroded Hot End and Hot intermediate heating elemants baskets one by one in their place after providing gentry arrangements for lifiting these deteriorated/ chocked baskets. Insertring the new basket into the APH Hot End and hot intermediate module one by one. Then lowering the released deteriorated/ cvhocked baskets one by one from 26 mtr level to '0' mtr level in Boiler area, through electric motor winch and loading of these released deteriorated/ Chocked Hot End and Hot intermediate heating elements baskets in the lorry using crane and treasoprting to central stores and unloading for devolution including consumables, T&P's and hire charges. (The required crane, Lorry, High capacity electric motor winch are arrangeed by contractors scope) |
| 7 | Charges for dismantling the Basket removal door at 18 mtr in APH flue gas outlet path, providing winch arrangements to faccilitate for leading and removal basket through this Basket removal door and dismantling winch, refixing the Basket removal door after completion of baskets renewal work including Consumables and T&P's |
| 8 | This work involves drawl of new Cold End heating elements baskets from NCTPS III stores by using crane and loading in to the lorry, transporting and unloading the new Cold End heating elements baskets at '0' mtr level in Boiler area and these new Cold end heating elements baskets lifting one by one from '0' mtr level to 18 mtr elevation by using electric motor winch and these lifted new baskets are kept in APH are platform then and dismantling the existing chocked/deteriorated / eroded cold end heating elements baskets (Size:750 mm height width range: 192 - 654 mm) one by one in their place after providing gentry arrangements for lifting these chocked/deteriorated baskets. Inserting the new basket into the APH cold end baskets one by one. Then lowering the released chocked/deteriorated baskets one by one from 18 mtr level to '0' mtr level of Boiler, through electric motor winch and loading of these released deteriorated/ Chocked cold end heating elements baskets in the lorry using crane and transporting to central stores and unloading for devolution including consumables, T&P's and hire charges. (The required crane, Lorry, High capacity electric motor winch are arranged by contractors scope) |
| 9 | Charges for providing of scaffolding/ temporary platform below the APH inside primary, secondary airduct, flue gas duct side of the APH for renewal of rotor angle, 'T' bar,Bypass & CE radial seal setting and removal of scaffolding after completion of renewal work. |
| 10 | Overhauling of APH lub oil pumps and its valves for support bearing and guide bearing .This work involves Dismantling, cleaning, Inspection of bearings, gears, internals and replacement of the same, if required then reassembling and alignment works etc., |
| 11 | Charges for dismantling the APH lube oil coolers from bed, removing the internal copper tube assembly, cleaning, servicing, checking and plugging the defective tubes and testing of cooler by hydraulic testing method and reassembling. Including cost of consumables and T&P’s |
| 12 | Removing the APH lube oil filter inlet & outlet flanges:This work involves removing all the bolt and freeing the inlet & outlet flanges,removing the oil filter, changing the outer SS micron mesh and reassembling the same. including cost of consumables and T&P's |
| 13 | Charges for dismantling of Air motors / inspection the lubricating oil for internals, vanes, bearings and reassembling works. Including cost of consumables and T&P’s. |
| 14 | Charges for removal of fluid coupling, half multi disc, out put half coupling, damaged worn-out oil seals from the APH gear box and fixing of new oil seal and assembling of all dismantled components. Including cost of consumables and T&P’s. |
| 15 | Charges for removal of coupling half multi disc oil seals, damaged worn-out overrunning clutch/shaft of APH for the main gear box fixing of new or overhauled clutch/reconditioned shaft, assembling of all dismantled components, aligning, commissioning charges inclusive of consumables and T&P’S. |
| 16 | Charges for checking of Guide bearing, the work includes draining of lube oil from bearing, removal of lube oil inlet and outlet pipe lines from guide bearing housing, removal of guide bearing housing cover, checking and correcting the guide bearing level, providing necessary lock cleaning and flushing of guide bearing, inspection of guide bearing, checking and correcting the level of guide bearing and renewal of new oil and assembly the same including cost of consumables and T & P’s etc. |
| 17 | Charges for removing the cover of support bearing, cleaning of sump, flushing, rinsing, inspection of internals, overhauling of lubricating lines, checking support bearing levels and providing covers etc in B pass. Including cost of consumables & hire Charges for T & P's. |
| 18 | Charges for checking the rotor level by master level and correcting by loosening / tightening of rotor lock bolt, further providing necessary locking arrangements for rotor, alignment of radial sector plates on both hot and cold end sides and setting of seal clearance by loosening of all radial and By pass seals,fixing of straight edge, removing the bolts and lock nuts By gas cutting, renewal of worn out and damaged radial and by pass seals and refixing of all seals and setting the required seal clearance and tack welding of sector plates & final alignment including cost of consumables and T&P’s. |
| 19 | Charges for loosening and dismantling the cold end / hot end all axial seals, removing the bolts and lock nuts by gas cutting & adjusting the Axial seal plate, the gap between Axial seal plate to sector plate, renewal of worn out and damaged axial seals and refixing of all seals and setting the required seal clearance and tack welding of sector plates and final alignment including cost of consumables and T&P’s. |
| 20 | Charges for chipping, breaking and removing of refractory, super ceramic packing, graphite rope of Stationary spool retainer ring, dismantling & removal of worn out sealing ring cover cutting, machining fixing new sealing ring Welding grinding, reconditioning of Stationary spool retainer ring in Worn-out portions, reassemble of all Components cutting bending, fabrication & Fixing of guide bearing oil flow Inspection door & breather in cover. |
| 21 | Charges for complete overhaul of APH soot blower and its gear box. |
| 22 | Charges for complete overhauling of manhole doors.Including cost of consumables for T&P's. |
| 23 | Charges for cleaning, complete inspection and water washing of SCAPH A pass and attending minor defects . Including cost of consumables for T&P's. |
| 24 | Plastering of Refractory in APH Guide Bearing area. Charges for cleaning, surface preparation, transporting the refractory from stores and unloading at site,leading, lifting, stacking at APH Guide Bearing area, mixing the refractory with water, application and curing and after completion works removing the waste refractory from APH area, lowering to the ground flower, loading to tipper and disposing at waste disposal area. Charges including cost of refractory, consumable and hire charges for T&P's. |
| 25 | Renewal / reconditioning of metallic expansion joints (Style 1 & 2 ): Work involves arresting the upstream and down stream of duct, cutting and removal of existing eroded cover plate and metalic expansion joints and gauching. Leading, lifting , positioning of new expansion joint,aligning with the duct channel and complete welding. |
| 26 | Charges for transportation of retrieved material and scrap from APH to NCTPS-III stores |
| 27 | Fixing of Insulation :This work involves removal of damaged insulation and re fixing with new/old insulation material in APH Guide bearing area upto 150mm thickness. |
| 28 | Fixing of cladding sheet :This work involves fixing of G.I.Sheet with new / old G.I. sheet over insulation done in APH Guide bearing area |
| 29 | Material Supply Portion:Supply of Seals For APH: (Radial, Axial and Bypass seals) (All fasteners (Bolt/Stud/Nut/Washer) should be HT class, Gr12.9; Make : TVS, Unbrako, LPS, MFL or equivalent for APH.Radial Seal Material : Corten A Steel; Thickness- 2.5mm.Test certificate for the materials to be submitted at the time of supply.) |
| 30 | Radial Seal Assembly For Hot End & Cold End Including Fasteners For APH A Pass. Material :2.5mm corten :ARotation : Clockwise direction |
| 31 | Axial Seals Assembly For Hot End & Cold End Including Fasteners For APH A Pass. Material :2.5mm corten :ARotation : Clockwise direction |
| 32 | By pass Seals Assembly For Hot End & Cold End Including Fasteners For APH A Pass. Material :1.6mm corten :ARotation : Clockwise direction |
| 33 | Supply of Ceramic fibre blanket ( Size: 3.81mtrs x 0.61Mtr.) Thickness: 50mm (Make: Lloyds /Shree ceramic/ MMP Refractech or equivalent) Temperature: 1260 deg.cel, Density:128 Kg./Sq.mtr. (Test certificate for the material to be submitted at the time of supply). Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Oct 23, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedOct 29, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 2 daysOct 30, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 3 daysTender Documents
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