|
Complete Overhauling Of Pressure Parts Of Boiler, Supply Of Scaffolding, Jet Cleaning Of First And Second Pass Of Boiler, Works Of Main Boiler System, Soot Blower, Drum Internal, Penthouse, Repairing Of Seal Plate Of Seal Trough, Repairing Of Buck Stay, Repairing / Refixing / Servicing Of Hangers And Its Supports, Insulation, Radiography Test & Other Associated Works Required During Oh#3, 2X210mw, Btps, Parichha, Jhansi”. Time Duration: 30 Days Fy 2023-24- 1 Complete External Water Washing Of All Floors Of Boilerfrom 8 Meter Toroof Of Pent House And Internal Cleaning Ofsecond Pass Including Dust / Ash Disposal From Pent House, Dog House Andeconomizer Hopper. 2 Supply And Erection Of Cup Lock In Ist And 2Nd Pass Scaffolding. Total Duration 30 Days 3 High Pressure Jet Cleaning For Pressure Part With Supply Of Pump. 4 High Pressure Joints Of Carbon Steel / Low Alloy T-11 / T-22 / T91 / Tph 347 Hp Joints Up To 76.1Mm Of Tube Size. 5 Thickness Survey Ofboiler Pressure Part, 16 Hanger Economizer ( Lower & Upper Bank ) / 16 Hanger Of Ltsh And Other Area Of Boiler Pressure Part I.E. Water Wall, Scw, Crh, Hrh, Fsh, Etc As Per Requirement. 6 Unit Rate Of Extra Metal Build Up Eroded Portion Of Pressure Parts Tube Caused By Ash / Steamerosion Using Suitable Electrode Matching With Parent Metal Composition By Arc And Argon Welding Where Joint Is Not Required ( Size:150Mmlength X 35Mmwidth, Depth Of Erosion Up To 2.5Mm ) . 7 Fin Welding Work Of Water Wall / Steam Cool Wall. 8 Installation Of Ss Shielding / Cassette Baffles In All Erosion Prone Area Like In Screen Water Wall, Ltsh, Economiser And Extended Scw. 9 Dp Test Of Dissimilar Joints Of Header Tubes ( Dp Kit Shall Be In The Scope Of Contractor ) . 10 Repairing Of Skin Casing Of First Pass & Second Pass Of Pent House And Complete Furnace Sealing In Pent House And Dog House Area. Casting Of Refractory Of Penthouse Where Ever Required After Alignment / Correction Of Roof Sealing Tubes. Disposal Of Ash Of Penthouse. 11 Repairing / Replacement Works Of Wind Box Expansion Bellow And Sadc Of Each Corner. 12 Overhauling Of Soot Blower And Aph Blower. 13 Complete Overhauling Of All Lrsb, 1Job= 6 Nos. Lrsb. 14 Complete Internal Overhauling Of Boiler Drum. 15 Servicing Of Safety Valves ( Drum, Super Heater, Hrh, Crh And Erv ) . 16 Servicing Of Ms1 & Ms2, Economizer Inlet Valve, Feed Control Valves And Other Various Types Of Valves ( 250Mm To 350Mm Size Valve ) . 17 Dismantling And Casting Of Refractory Work In Various Places Inside Boiler. 18 Additional Scaffolding / Day Due To Delayof Uprvunl End 19 Repairing And Reconditioning Work Of Inspection Window And Man Holes. 20 Repairing Of Damaged / Bulged Seal Plate Of Seal Trough Of Boiler. 21 Repairing And Reconditioning Of Horizontal Buck Stay Of Ist And 2Ndpass By Cutting / Dismantling / Welding Of Buck Stay Link And Resetting Of Horizontal Buck Stay Link With Buck Stays. 22 Repairing And Reconditioning Of Vertical Buck Stay Of First And Second Pass By Cutting / Dismantling / Welding Of Buck Stay Link And Resetting Of Vertical Buck Stay Link With Buck Stays. 23 Servicing / Replacement / Resetting Of Spring Hangers, Supports, Anchor And Restraints Of Critical Piping And Ducts And Resetting The Spring Hangers On Cold Set Values Of Boiler Side 24 Supply And Fixing Of 65Mm Thick Lrb Insulation Pad In Single Layer 25 Supply And Fixing Of 65 Mm Thick Lrb Insulation Pad In Double Layer 26 Supply And Fixing Of 65 Mm Thick Lrb Insulation Pad In Triple Layer 27 Supply And Fixing Of G.P. Sheet 22 Swg ( 0.71 Mm Thick ) 28 Removing The Old Webbed G.C. Sheet / G.P. Sheet / Aluminium Sheet And Fixing The Same On Lrb Pads With Self Tapped Screws. 29 Lrb Pads In 50Mm Applying With New Aluminium Sheet Of 24 Gauge On Steam / Feed Lines 30 Radiography Of New H.P Joints Of Boiler Tube By Remote Operated Gamma Radiography Camera, Processing Of Films And Interpretation Of H.P Joints During Work In Boiler. ( Complete Work Of Radiography, Processing & Submission Of Report Of 01 No. H.P Joint =01 No Job ) 31 Radiography Of Old H.P Joints Of Boiler Tube By Remote Operated Gamma Radiography Camera, Processing Of Films And Interpretation Of H.P Joints During Work In Boiler ( Complete Work Of Radiography, Processing & Submission Of Report Of 01 No. H.P Joint =01 No Job )
|
