Uttar Pradesh Rajya Vidyut Utpadan Nigam Limited-UPRVUNL has published Boiler Insulation Work During Overhauling Insulation, Refractory And Removal Of Fly Ash, Debris From Pressure Part, Ducts, Hoppers And Roof Of Pent House Etc. During Overhauling Of Unit-03, 3X210 M.W., Atps, Anpara. Submission Date for this Tender is 06-09-2022. Boiler Work Tenders in anpara Uttar Pradesh. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 08-Aug-2022 | EXTENTION OF SUBMISSION DATE | Date | 23-08-2022 |
| 2 | 23-Aug-2022 | Date Extension | Date | 06-09-2022 |
| Sl. No. | Item Description |
| 1 | One layer Insulation of pipeline, valves, headers, pressure parts (I&II), ESP, Dearator & various ducts of ID/FD/PA fans & bowl mills etc. When new cladding is to be provided with 24 / 22 Gauge (GI / Al.) sheet. |
| 2 | More than one layer Insulation of pipeline, valves, headers, pressure parts (I&II), ESP, Dearator & various ducts of ID/FD/PA fans & bowl mills etc. When new cladding is to be provided with 24 / 22 Gauge (GI / Al.) sheet. |
| 3 | One layer Insulation of pipeline, valves, headers, pressure parts (I&II), ESP, Dearator & various ducts of ID/FD/PA fans & bowl mills etc. When old removed GI sheet to be re-fixed. |
| 4 | More than one layer Insulation of pipeline, valves, headers, pressure parts (I&II), ESP, Dearator & various ducts of ID/FD/PA fans & bowl mills etc. When old removed GI sheet to be re-fixed. |
| 5 | Fixing the scaffolding pipes from "0" mtrs to elevated duct area (above 30 meters) & dismantling the same after completion of work and thereafter shifting the pipes to site store. |
| 6 | Insulation of headers in pent house of 3x210MW Boiler. When two or more than two layers of new/old mineral wool blankets/pads of thickness 40 / 50 / 60 mm are to be provided on the headers in the pent house. |
| 7 | Replacement / re-fixing of old / new G. I. / Al. sheet with the help of self tapping screw. The mineral wool will not be replaced. |
| 8 | Refractory works of main boiler andPressure Parts |
| 9 | Cleaning of Cold PA ducts (left and right) from P.A. fans outlet dampers to APH. |
| 10 | Cleaning of Cold SA ducts (left and right) from P.A. fans outlet dampers to APH. |
| 11 | Cleaning ofDog House. |
| 12 | Cleaning of Hot SA duct (Right) |
| 13 | Cleaning of Hot SA duct (Left) |
| 14 | Cleaning of Wind Box (Right) |
| 15 | Cleaning of Wind Box (Left) |
| 16 | Cleaning of Gooseneck cat house front and rear. |
| 17 | Cleaning of Economiser chamber of boiler |
| 18 | Cleaning of gallery between Reheater and arch tubes. |
| 19 | Cleaning of gallery between exit super heater and hangers tubes to conv. super heater |
| 20 | Cleaning of second pass (LTSH) |
| 21 | Cleaning of Pent house above furnace. |
| 22 | Cleaning of gallery between platen super heater and cold reheat headers in pent house. |
| 23 | Cleaning between exit super heater and convector super heater headers in pent house. |
| 24 | Cleaning of space between header No.10 & rear sidewall in pent house. |
| 25 | Cleaning of gallery between cold reheat headers in pent house. |
| 26 | Cleaning of gallery in left and right of pent house between water wall and skin casing. |
| 27 | Cleaning of Space below boiler drum between front water wall and front drum houseman hole. |
| 28 | Cleaning second pass of pent house (above ceiling tube of pent house) |
| 29 | Cleaning of all four Economiser hoppers. |
| 30 | Cleaning of all the four flue gas ducts from air pre-heater to ESP inlet. |
| 31 | Cleaning of inter connecting duct of flue gas at ESP inlet. |
| 32 | Cleaning of flue gas duct hopper just before and after F.G.-3 and F.G.-4 dampers. |
| 33 | Cleaning and removal of accumulated fly ashes / foreign materials / debris / scraps etc. from the boiler roof and its disposal to ‘0’Mtr.level boiler and from ‘0’Mtr. to dumping yard. |
| 34 | Removal of set refractory from steam header for checking which involves breaking of refractory by chisel and removal of same and shifting to dumping yard. |
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