Uttar Pradesh Rajya Vidyut Utpadan Nigam Limited-UPRVUNL has published Overhauling Works Of Coal And Oil Burner Drum Internals Boiler Structure Platform Dp Test And Cleaning Of Boiler Etc During Overhauling Of Unit No 09 3X200mw Btps Obra Sonebhadra. Submission Date for this Tender is 07-11-2022. Road Cargo Transport Tenders in obra Uttar Pradesh. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 26-Oct-2022 | Submission date corrigendum | Date | 31-10-2022 |
| 2 | 01-Nov-2022 | Corrigendum of submission date | Date | 07-11-2022 |
| Sl. No. | Item Description |
| 1 | Replacement/Overhauling of Coal & Oil Burners including air nozzle & scanner guide assembly of all the four corners (18 M/L) of boiler (3X200 MW0 & setting of Fire Ball angles |
| 2 | Complete overhauling of all the 52 nos. S.A. dampers in wind box at all the four corners. |
| 3 | Fabrication and fitting of burner top/bottom casing at all the four corners. |
| 4 | Overhauling of boiler fill pump. |
| 5 | Overhauling of scanner fans and its dampers. |
| 6 | Changing and repairing of railings of main boiler of 3X200 MW unit no.-09 |
| 7 | Checking and attending of spray nozzles of S/H and R/H spray (L/R) |
| 8 | Checking and rectification of box supports of down comers from 48 M/L to 16 M/L. |
| 9 | Complete Overhauling Boiler Drum internals |
| 10 | Repairing of man holes of Boiler |
| 11 | Replacement of packing of man holes |
| 12 | Repairing of Boiler Peep holes. |
| 13 | Replacement of packing of boiler peep holes. |
| 14 | Alignment and fixing of supports of hot air ducts |
| 15 | Rectification of hinge supports of wind box of boiler at 19 M/L (L&R). |
| 16 | Hard Facing of Coal nozzle casting. |
| 17 | work of Repairing and Servicing of CBD (Continuous Blow Down) Expander tank & safety valves with replacements of H.P./L.P. valves . |
| 18 | Erection and fabrication of new structure and platform & Painting |
| 19 | Erection and fabrication of new structure and platforms behind APH and Economizer at Boiler 15 m/l and Boiler 30m/l respectively. |
| 20 | Painting of the above structure. |
| 21 | Fitting of new grills by replacements. |
| 22 | Strengthening of Structural Horizontal/ Vertical/ Inclined Beam by welding stiffeners at every 01 meter over whole beam on both sides and additional plates of the same thickness on both sides of all web and flanges. |
| 23 | Correction of Sagged/ Bowed Beams by cutting and replacement of the same thickness. |
| 24 | Strengthening Vertical Columns of Boiler Structure. |
| 25 | Cleaning, Shielding by Plate and Painting of Intersection of Inclined andVertical Columns of Boiler Structure. |
| 26 | Strengthening by welding of the above joint at Inclined and Vertical Columns of Boiler Structure. |
| 27 | Complete repairing of hydraulic seal system. |
| 28 | Replacement of high pressure steam/ feed line/EBD/CBD/S.H. Spray Line/R.H. spray line bends at different elevations. |
| 29 | D.P. tests for dissimilar in Re-heater, stub joints, PSH stub etc. up to dia -Size 127 mm. |
| 30 | D.P. test of joints of critical pipes. (Main Steam/CRH/HRH Line/Link lines). |
| 31 | Boiler Cleaning. |
| 32 | Works of cleaning of boiler of Unit No.-09 (200 MW) during its proposed overhauling. |
| 33 | Disposal of ash garbage/ waste refractory from inside the Boiler and hot PA Duct to 3Km away from Power plant premises. |
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