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| 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 | 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. |
| 6 | Replacement / re-fixing of old / new G. I. / Al. sheet with the help of self tapping screw. The mineral wool will not be replaced. |
| 7 | Refractory works of main boiler andPressure Parts |
| 8 | Cleaning of Cold PA ducts (left and right) from P.A. fans outlet dampers to APH. |
| 9 | Cleaning of Cold SA ducts (left and right) from P.A. fans outlet dampers to APH. |
| 10 | Cleaning ofDog House. |
| 11 | Cleaning of Hot SA duct (Right) |
| 12 | Cleaning of Hot SA duct (Left) |
| 13 | Cleaning of Wind Box (Right) |
| 14 | Cleaning of Wind Box (Left) |
| 15 | Cleaning of Gooseneck cat house front and rear. |
| 16 | Cleaning of Economiser chamber of boiler |
| 17 | Cleaning of gallery between Reheater and arch tubes. |
| 18 | Cleaning of gallery between exit super heater and hangers tubes to conv. super heater |
| 19 | Cleaning of second pass (LTSH) |
| 20 | Cleaning offrom water wall of first pass (furnace) from ‘0’ meters to 48 meters elevation. |
| 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. |
| 35 | Complete Insulation of pipelines, pressure parts main boiler, ESP, ducts and other associated equipments. When new cladding to be provided with 20-24 gauges (G.I.)/Aluminium sheet shall be provided by the department free of cost). Work includes fabrication and fixing of cladding structure one layer of mineral wool blankets/pads or calcium silicate pipe section of thickness 40/50/60 mm, are provided/fixed at site. |
| 36 | Complete Insulation of pipelines, pressure parts main boiler, ESP, ducts and other associated equipments. When new cladding to be provided with 20-24 gauges (G.I.)/Aluminium sheet shall be provided by the department free of cost). Work includes fabrication and fixing of cladding structure more than one layer of mineral wool blankets/pads or calcium silicate pipe section of thickness 40/50/60 mm, are provided/fixed at site. |
| 37 | Complete Insulation of pipelines, pressure parts main boiler, ESP, ducts and other associated equipments. When old/removed cladding sheets to be fixed with the help of self-tapping screw, when one layer of mineral wool blankets/pads or calcium silicate pipe section of thickness 40/50/60 mm, are provided or the old/removed but usable are provided/fixed at site. |
| 38 | Complete Insulation of pipelines, pressure parts main boiler, ESP, ducts and other associated equipments. When old/removed cladding sheets to be provided with 20-24 gauges (G.I.)/Aluminium sheet shall be provided by the department free of cost). Work includes fabrication and fixing of cladding structure more than one layer of mineral wool blankets/pads or calcium silicate pipe section of thickness 40/50/60 mm, are provided or the old/removed but usable are provided/fixed at site. |
| 39 | Insulation of headers in penthouse/outside, when more than one layer of mineral wool/blankets/pads of thickness 40/50/60 mm, are provided/fixed on the headers in penthouse. |
| 40 | Application of mineral wool blankets/pads and fixing with G.I. Wire on H.P./L.P. Valves of boiler. Application of insulating powder, hard lag/ mastic compound & finishing/cladding with G.I./Aluminium sheets of 20-24 gauge wherever required as per site requirement or as instructed. |
| 41 | Application of Castable refractory |
| 42 | Application of Plastic refractory |
| 43 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from primary super heater chamber inside the boiler. |
| 44 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from Economizer chamber inside the boiler. |
| 45 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from gallery between re-heaters and arch tube inside the boiler. |
| 46 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from penthouse above furnace. |
| 47 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from gallery between tertiary super heater and secondary re-heater in penthouse. |
| 48 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from gallery between secondary re-heater and tertiary re-heater in penthouse. |
| 49 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from the following heating areas of boiler pressure parts from gallery between tertiary re-heater and final super heater in penthouse. |
| 50 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard gallery between final super heater and primary super heater headers in penthouse. |
| 51 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from extended furnace house between 1st and 2nd pass. |
| 52 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from economizer hopper inside the boiler. |
| 53 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yard from gallery along with water wall header left/right in penthouse from primary re-heater inlet header to final super heater header. |
| 54 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yards from Hot secondary air duct from APH to wind box (left) |
| 55 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yards from Hot secondary air duct. from APH to wind box (right) |
| 56 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yards from Boiler furnace wind box (left) |
| 57 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yards from Boiler furnace wind box (right) |
| 58 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yards from Interconnecting duct of hot secondary air. |
| 59 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yards from inlet damper to outlet damper of air and flue gas duct of primary APH including APH. |
| 60 | Cleaning and removal of fly ash/debris etc. and their disposal to dumping yards from inlet damper to outlet damper of air and flue gas duct of secondary APH including APH. |
| 61 | Cleaning and removal of fly ash/foreign materials/debris/garbage etc. From doghouse of boiler and their disposal to dumping yard. |
| 62 | Cleaning and removal of fly ash/foreign materials/debris/garbage etc. From S-panel of boiler and their disposal to dumping yard. |
| 63 | Cleaning and removal of fly ash/foreign materials/debris/garbage/pigeon-shits etc. From buck stay of first and second pass of boiler from 11m to 80m by sweeping with hard broom/wire brush and their disposal to dumping yard. |
| 64 | Cleaning and removal of fly ash/foreign materials/debris/garbage/pigeon-shits etc. From penthouse roof of boiler by sweeping with hard broom/wire brush and their disposal to dumping yard. |
| 65 | Complete Insulation of pipe lines, Pressure parts Main Boiler, ESP, Ducts and other associated equipments- When new cladding is to be provided with 18-24 Gauge (Aluminium sheet shall be provided by the department free of cost). Work includes fabrication and fixing of cladding structure. When one layer of mineral wool blankets/ pads or Calcium silicate pipe section of thickness 25/40/ 50/ 60/75 mm, are provided / fixed at site. |
| 66 | Complete Insulation of pipe lines, Pressure parts Main Boiler, ESP, Ducts and other associated equipments-When new cladding is to be provided with 18-24 Gauge (Aluminium sheet shall be provided by the department free of cost). Work includes fabrication and fixing of cladding structure. When more than one layer of mineral wool blankets/ pads or calcium silicate pipe section of thickness 25/40/50/60/75 mm, are provided / fixed at site, |
| 67 | When old/ removed cladding sheets to be fixed with the help of self tapping screws.When one layer of mineral wool blankets/ pads or Calcium silicate pipe section of thickness 25/40/ 50/ 60/75 mm, are provided or the old/ removed but usable are provided/ fixed at site. |
| 68 | When old/ removed cladding sheets to be fixed with the help of self tapping screws,When more than one layer of mineral wool blankets/ pads or calcium silicate pipe section of thickness 25 /40/ 50/ 60 /75 mm, are provided or the old/ removed but usable are provided/ fixed at site. |
| 69 | Insulation of Headers in Pent House/ out side : When more than one layer of mineral wool blankets /pads of thickness 25/40/50/60/70 mm, are provided /fixed on the headers in pent house etc. |
| 70 | Application of mineral wool blankets/ pads and fixing with G.I. wire on H,P./ L.P. Valves of Boiler. Application of insulating powder, hard lag/ mastic compound & finishing / cladding with G.I. / Aluminum sheets of 18-24 gauge wherever required as per site requirement or as instructed. |
| 71 | Application of Refractory in Main Boiler/Pressure parts heating zones. |
| 72 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard from Low temperature Super Heater chamber inside the Boiler. |
| 73 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard From Economiser Chamber inside the Boiler |
| 74 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard from From gallery between reheaters and arch tubes inside the Boiler |
| 75 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard From pent house above furnace |
| 76 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard From gallery between Platen superheater and reheater in pent house |
| 77 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard From gallery between CRH header and HRH header in pent house |
| 78 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard From gallery between divisional superheater to platen super heater in pent house |
| 79 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard From gallery between/around all the four Divisional superheater headers in pent house |
| 80 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard From extended furnace house between 1st and 2nd pass of Boiler |
| 81 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard From economizer hopper of Boiler |
| 82 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard From gallery along with water wall header left/right/front in pent house from divisional super heater to platen super heater area |
| 83 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard Hot secondary air duct from Air pre heater to wind Box (L) |
| 84 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard Hot secondary air duct from Air pre heater to wind box (R) |
| 85 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yardBoiler furnace wind box (L) |
| 86 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard Boiler furnace wind box(R) |
| 87 | Cleaning and removal of fly ash/ foreign materials/ debris etc. and their disposal to dumping yard Inter connecting duct of hot secondary air |
| 88 | Cleaning and removal of fly ash/ foreign materials / debris / garbage etc. from S-panel of Boiler and their disposal to dumping yard. |
| 89 | Cleaning and removal of fly ash/ foreign materials/ Debris/ garbage / insulating materials/ pigeon shits etc. from buck stays of 1st and 2nd pass of Boiler from 11 mtr. Boiler elevation up to 80 mtr and sweeping with hard broom/ wire brush and their disposal to dumping yard. |
| 90 | Complete internal water washing of 1st pass |
| 91 | complete internal water washing of 2nd pass |
| 92 | Complete Insulation of Ducts ( Primary air, Secondary air, Flue Gas) covering entire area from PA fans ducting, FD fans ducting upto APH inlet, ESP outlet gates to ID fans upto Chimney:-When new cladding is to be provided with 20-24Gauge G.I./ Aluminium sheet. Work includes fabrication and fixing of cladding structure, when more than one layer of mineral wool blankets/ pads , are provided / fixed at site |
| 93 | Complete Insulation of Ducts ( Primary air, Secondary air, Flue Gas) covering entire area from PA fans ducting, FD fans ducting upto APH inlet, ESP outlet gates to ID fans upto Chimney:-When old/ removed cladding sheets to be fixed with the help of self tapping screws and more than one layer of mineral wool blankets/ pads , are provided or the old/ removed but usable are provided/ fixed at site. |
| 94 | Replacement/ Refixing of old/new GI / AI sheets with the help of self tapping screws |
| 95 | Erection of platform of height upto \"10\" mtr. . |
| 96 | Erection of platform of height upto \"15\" mt |
| 97 | Fixing the scaffolding pipes from \"0\" mtrs. to elevated duct area (above 20 meters) & dismantling the same after completion of work and thereafter shifting the pipes to site store for Complete Insulation of Ducts ( Primary air, Secondary air, Flue Gas) covering entire area from ESP outlet gate to ID fans inlet & ID fans outlet upto Chimney (only vertical & elevated duct areas). |
