Overhauling Maintenance Of Ducts And Dampers Of Boiler Of Unit No. 06 Of 2X500 Mw, Dtps, Anpara, anpara-Uttar Pradesh

Overhauling Maintenance Of Ducts And Dampers Of Boiler Of Unit No. 06 Of 2X500 Mw, Dtps, Anpara- 1 Servicing Of Medium / Large Size Gates In Id, Fd, Pa, Hot / Cold Air Ducts, Flue Gas Ducts & Rectification Of Defects, If Any. 2 Servicing & Repairing Of Discharge / Suction Dampers Of Id, Fd, Pa Air And Flue Gas Dampers. 3 Cutting, Welding & Patch Work In Flue Gas Duct, Secondary Air Duct / Primary Air Duct Including Dampers Flap, Baffle Plates And Hopper Etc.Welding 4 Cutting, Welding & Patch Work In Flue Gas Duct, Secondary Air Duct / Primary Air Duct Including Dampers Flap, Baffle Plates And Hopper Etc.Cutting 5 Cutting, Welding & Patch Work In Flue Gas Duct, Secondary Air Duct / Primary Air Duct Including Dampers Flap, Baffle Plates And Hopper Etc.Patch Work 6 Replacement / Repair Of Damaged And Eroded Bracing Pipe With New Bracing Pipe Of Hot Air Duct / Cold Air Duct / Flue Gas Duct 7 Repairing Of Expansion Joints 8 Flue Gas Ducts Cleaning / Inspection: ( For Ducts Of One Unit To Be Considered As One Job ) Pa Fan Discharge To Aph Inlet 9 Flue Gas Ducts Cleaning / Inspection: ( For Ducts Of One Unit To Be Considered As One Job ) Pa Cold Air Discharge Duct: From Pa Fan Discharge To Cold Pa Dampers Of All Mills ( A-K ) 10 Flue Gas Ducts Cleaning / Inspection: ( For Ducts Of One Unit To Be Considered As One Job ) Pa Hot Air Discharge Duct : From Aph Outlet To Hot Pa Dampers Of All Mills ( A-K ) 11 Flue Gas Ducts Cleaning / Inspection: ( For Ducts Of One Unit To Be Considered As One Job ) Pa Ducts: From Hot / Cold Air Dampers Of Mills To Mill Assembly Of All Mills ( A-K ) 12 Flue Gas Ducts Cleaning / Inspection: ( For Ducts Of One Unit To Be Considered As One Job ) Fd Fan Discharge To Aph Inlet 13 Flue Gas Ducts Cleaning / Inspection: ( For Ducts Of One Unit To Be Considered As One Job ) Flue Gas Duct: From Esp Outlet Gate To Id Fan Suction Damper 14 Flue Gas Ducts Cleaning / Inspection: ( For Ducts Of One Unit To Be Considered As One Job ) Flue Gas Duct: From Id Fan Discharge Damper To Chimney 15 Fabrication / Repairing Of Duct Emtying Chute Meant For Disposal Of Ash. 16 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 17 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 18 Replacement / Refixing Of Old / New Gi / Ai Sheets With The Help Of Self Tapping Screws 19 Fabrication / Erection Of Temporary Platforms For Working At Different Heights On Ducts ( The Job Includes Disassembling Of Platform After Completion Of Work ) As Mentioned Below:Erection Of Platform Of Height Upto 10 Mtr. 20 Fabrication / Erection Of Temporary Platforms For Working At Different Heights On Ducts ( The Job Includes Disassembling Of Platform After Completion Of Work ) As Mentioned Below:Erection Of Platform Of Height Upto 15 Mtr. 21 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 )

Sr No	CorrigendumDate	Corrignedum	CorrigendumType	NewSubmissionDate
1	02-May-2023	Extension of Dates	Date	15-05-2023
2	17-May-2023	Extension of Dates2	Date	01-06-2023
3	30-May-2023	Corrigendum in BOQ	Financial Bid	01-06-2023

INR 590 /-

INR 10000.0 /-

INR 5 Lakhs /-

Name of Work: Overhauling maintenance of Ducts & Dampers of Boiler of Unit 06, 2x500 MW, ‘D’TPS, Anpara.

Sl. No.	Item Description
1	Servicing of medium/large size gates in ID, FD, PA, hot/cold air ducts, Flue gas ducts & rectification of defects, if any.
2	Servicing & repairing of discharge /suction dampers of ID, FD, PA air and flue gas dampers.
3	Cutting, welding & Patch work in flue gas duct,secondary air duct/ primary air duct Including dampers flap, baffle plates and hopper etc. Welding
4	Cutting, welding & Patch work in flue gas duct,secondary air duct/ primary air duct Including dampers flap, baffle plates and hopper etc. Cutting
5	Cutting, welding & Patch work in flue gas duct,secondary air duct/ primary air duct Including dampers flap, baffle plates and hopper etc. Patch work
6	Replacement / Repair of damaged and eroded bracing pipe with new bracing pipe of hot air duct/cold air duct/flue gas duct
7	Repairing of expansion joints
8	Flue gas ducts cleaning / inspection: (for ducts of one unit to be considered as one job) PA fan discharge to APH inlet
9	Flue gas ducts cleaning / inspection: (for ducts of one unit to be considered as one job) PA Cold air discharge duct: from PA Fan discharge to cold PA dampers of all mills (A-K)
10	Flue gas ducts cleaning / inspection: (for ducts of one unit to be considered as one job) PA Hot air discharge duct : from APH outlet to hot PA dampers of all mills (A-K)
11	Flue gas ducts cleaning / inspection: (for ducts of one unit to be considered as one job) PA ducts: from hot/cold air dampers of mills to mill assembly of all mills (A-K)
12	Flue gas ducts cleaning / inspection: (for ducts of one unit to be considered as one job) FD fan discharge to APH inlet
13	Flue gas ducts cleaning / inspection: (for ducts of one unit to be considered as one job) Flue gas duct: from ESP outlet gate to ID Fan suction damper
14	Flue gas ducts cleaning / inspection: (for ducts of one unit to be considered as one job) Flue gas duct: from ID Fan discharge damper to chimney
15	Fabrication / repairing of duct emtying chute meant for disposal of ash.
16	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
17	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
18	Replacement/ Refixing of old/new GI / AI sheets with the help of self tapping screws
19	Fabrication / erection of temporary platforms for working at different heights on ducts (the job includes disassembling of platform after completion of work) as mentioned below: Erection of platform of height upto "10" mtr.
20	Fabrication / erection of temporary platforms for working at different heights on ducts (the job includes disassembling of platform after completion of work) as mentioned below: Erection of platform of height upto "15" mtr.
21	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)