Corrigendum - Overhauling Of Boiler Pressure Parts, Hp Valves, Safety Valves, Soot Blower, Eco / Ltsh / Psh / Fsh / Rh Coil Replacement Of 210Mw Boiler Of Unit –1 Bktppbktpp , Boiler Pressure Part Work: , Scaffolding Of Furnace Zone , Plsh By Bsl Couplok Scaffolding . , Scaffolding Of Fsh , Rh , Ltsh & Economizer . , Cleaning Of Furnace ( Boiler First Pass ) , Plsh , Fsh & Rh Zone By Hp Water Jet . , Cleaning Of Ltsh , Economiser , Pent House Including Roof , Roof Top , Inside Pent House Accumulated Ash , Dog House , Dead Chamber , All Boiler Area Backstay . , Bottom Trough Seal Oh Including Sealing At Top Of Bottom Ash Hopper By Wooden Planks , Gi Sheet Etc . , Arrangement & Assistance For Furnace Gas Tightness Test . , Hanger & Supports Checking Including Air And Flue Gas Duct Area Up To Id Fan ( Excluding Esp ) & Boiler Buck Stay Checking . , Inspection Of Pent House . , Repairing Of Pent House . , Demetering Of Pressure Parts ( Maximum 22 , 000 Points ) . , Removal , Fabrication & Fitting Of Guard Tube & Guard Plate For Screen Tube , Ltsh , Economiser . , Lifting & Refitting Of Ltsh Coil . , Dp Test Of Stub Joints ( Limited To 10% ) . , Joint In Furnace Wall Tube . , Joint In Ltsh & Economiser Tube . , Joint In Fsh , Plsh , Rh & Ltsh . , Deposition Of Weld Metal On Tubes , Stubs , Headers Etc . , Radiography Of Pressure Welding Joints . , Skin Casing Welding . , Pressure Parts Area Miscellaneous Job . , Overhauling Of Boiler Drum And Drum Internals . , Removal And Refitting Of Economiser Coil . , Stress Relieving For Pressure Parts Welding Joint . , Cleaning & Resetting Of Spring / Sling At Pent House . , Roof Loose Tube Proper Clamping . , Fabrication Of Different Size Bends . , Economiser Header Stub Joint Replacement . , Ltsh Inlet Header Stub Joint Replacement . , Safety Valve Oh: , Servicing & Trevi Test Of Drum , Sh , Rh Safety Valves , Safety Valve Seat Cutting , Servicing Of Soot Blower Safety Valve . , High Pressure Valve Servicing: , Overhauling Of Hp Valve Size Up To 25 Mm , Overhauling Of Hp Valve Size Above 25 Mm & Up To 50 Mm , Overhauling Of Hp Valve Size Above 50 Mm & Up To 100 Mm , Overhauling Of Hp Valve Size Above 100 Mm & Up To 200 Mm , Overhauling Of Hp Valve Size Above 200 Mm , Eco Inlet Nrv ( Size-10 ) . , Crh / Hrh Isolating Device , Sh / Rh Atemperation Line Nrv , High Pressure Valve Replacement: , Replacement Of Hp Valve , Size Up To 50Mm , Replacement Of Hp Valve , Size Above 50Mm & Upto 100 Mm , Replacement Of Hp Valve , Size Above 100Mm & Upto 200 Mm , Hp Valve Actuator Cleaning , Greasing & Tit-Bit Maintenance: , Servicing Of Valve Actuator , Size Up To 50Mm , Servicing Of Valve Actuator , Size Above 50Mm & Upto 200 Mm , Servicing Of Valve Actuator , Size Above 200Mm & Upto 350 Mm , Oh Of Lrsb & Wall Blowers: , Lrsb Servicing & Alignment Work & Pressure Setting Of Soot Blowing System . , Wall Blower Servicing & Alignment Work & Pressure Setting Of Soot Blowing System . , Lrsb Lance Tube Replacement By A New One & Commissioning . , Wall Blower Replacement By A New One & Commissioning . , Engagement Of Ex-Bhel Experts: , Ex-Bhel Expert