annual maintenance contract for mechanical maintenance and boiler tube leakage rectification job of unit 3 4 boiler 500mwx2 and auxiliaries sgtpp , name of job: , mandatory works:mech maint mandatory works , optional job:roller journal servicing , duct repairing ( steel works ) , aph steel works , aph seal adjustment , replacement of damage r-jremoval of damaged roller journal complete assembly from coal mill and insertion of serviced roller journal assembly into the mill and complete box up of the coal mill ( optional job ) as per annexure . , coal feeder overhauling , coal pipe bend pipe replacement , aph gearbox replacement , hfo/ldo pump replacement , id fan bearing replacement , overhauling of pa fan , overhauling of fd fan , o/h of seal air fan inclu runner replacecomplete overhauling of seal air fan including runner replacement . , area/equipment cleaningarea/equipment cleaning with scope of supply of separatemanpower , tools and tackles , conveying vehicles like tractor with operator and fuel . , scaffolding per 6mtr vertical 2 mtr hori , sky climber fitting inside boiler with , hiring charge of laser cutting machine/ , pump with pump operator required for any , painting work , pa fan suction cover cleaning , mill overhauling and maintenance:coal mill overhauling including rj assemrj assembly , servicing , replacement and orfice and mdv servicing classifier checking in position . , classifier cone replacement during overh , bowl replacement during overhauling , yoke replacement during overhauling , coal mill gearbox replacement including , roller journal hard facing work , btl rectification job:water wall tube joint without scafldngtube od 51xt6 . 0mm , sa 210 gr-c , economiser coil joint without scaffoldintube od 38 . 1 x t 5 . 3mm , sa 210 gr-a , ltsh joint without scaffoldingtube od 47 . 63 x t 6 . 6mm , sa 213t11 , division panel joint w/o scaffolding t22tube od 51 x t 7 . 1mm , sa 213t22 , division panel joint w/o scaffolding t91tube od 44 . 5 x t 5 . 6mm , sa 213t91 , platen sh joint w/o scaffolding t22tube od 51x6 . 3mm sa213 t22 , platen sh joint w/o scaffolding ss-347htube od 63 . 5x8 . 0mm sa213tp347h , reheater joint without scaffolding t11tube od 47 . 63xt4 . 5mm sa 213t11 , reheater joint without scaffolding t91tube od 54 . 0mmxt5 . 0mm sa213t91 , screen tube/arch tube/waterwall hanger tube/ steam cooled wall/roof tube without scaffolding tube od 63 . 5mmx12mm sa210grc , ltsh hanger tube without scaffoldingtube od 51x11 . 0mm sa210 gr-c , eco hanger tube without scaffoldingtube od 45 . 5x7 . 1mm sa210 gr-c , other superheater joint , stress relieving per day , removal refitting fabrication guard tube , build up on eroded tubes per sq inch , radiography per day , welding of membrane strip/fin , fabrication of different sizes of bends , scaffolding per 6 meter horizontalat reheater , platen sh , division panel , screen tube , roof tube , scaffolding per 6 meter verticalat furnace wall , roof tube , platen , division panel , economizer , demetering boiler tube per day & report , boiler 2nd pass scaffolding water washinby lp water . , economizer/ltsh coil lowering and liftineconomizer/ltsh pair coil lowering and subsequent lifting aftercompletion of job without welding joint including coil alignment . , complete scaffolding inside boiler