annual rate contract for maintenance of boiler pressure parts of stage-i and stage-ii , btps under banda dept . , btps , wbpdcl annual rate contract for maintenance of boiler pressure parts of stage i and stage ii , btps under b and a dept . , btps , wbpdcl , maintenence of boiler pr . parts stage iunit capacity 60mwx2 , economiser tube jointtube od 51 mm , thickness 4 . 8 mm , material: sa 210 gr . c or equivalent , insert at furnace wall , goose necks-pannel & roof tube ( 1 insert = 02 nos . joint ) tube od:63 . 5 mm to 69 . 9 mm , thickness from 5 . 1 to 6 . 3 mm , material: sa 210 gr . a or equivalent , joint at saturated screenroof & side wall , screen tube , primary superheater tube , secondary superheater tube . ( od: 63 . 5 mm , thickness: 5 mm upto 6 . 9 mm , material: sa213t11 or equivalnt ) , insert at furnace wall , goose necks-pannel & roof tube ( 1 insert = 02 nos . joint ) tube od:63 . 5 mm to 69 . 9 mm , thickness from 5 . 1 to 6 . 3 mm , material: sa 210 gr . a or equivalent , joint at saturated screenroof & side wall , screen tube , primary superheater tube , secondary superheater tube . ( od: 63 . 5 mm , thickness: 5 mm upto 6 . 9 mm , material: sa213t11 or equivalnt ) , insert at furnace wall , goose necks-pannel & roof tube ( 1 insert = 02 nos . joint ) tube od:63 . 5 mm to 69 . 9 mm , thickness from 5 . 1 to 6 . 3 mm , material: sa 210 gr . a or equivalent , joint at saturated screenroof & side wall , screen tube , primary superheater tube , secondary superheater tube . ( od: 63 . 5 mm , thickness: 5 mm upto 6 . 9 mm , material: sa213t11 or equivalnt ) , maintenence of boiler pr . parts stage iiunit capacity 215 mwx1 , lp water cleaningeconomizer zone , psh & prh , joint for lnsertion of water wall tube , cage rear wall below main cavity & baffle wall tube below main cavity , size: 63 . 5x5 . 4 , mat: bs3059/45s2 or 5a210gr . c , insertion joint for division wall tubesize: 82 . 5x7 , mat: bs3059/45s2; or sa210gr . c , joint for lnsertion of furnace roof , cage rear wall & baffle wall tube above main cavity , size:63 . 5x4 . 8 , mat: bs3059/620s2 or sa213t11 , joint for insertion of economiser tubesize: 38 . 1x3 . 6 , mat: bs3o59/45s2 or sa210gr . c , insertion joint of psh bottom & middlesize:57 . 1x6 , mat: bs3059/620s2 or sa213t11 , joint for insertion of psh top bank tubetube , size: 63 . 5x3 . 6 , mat: bs3059/33s2 orsa210gr . c , insertion joint of prh bottom & middlesize: 57x3 . 2 , mat: bs3059/620s2 or sa213t11 , joint for lnsertion of prh top bank tubesize: 57x3 . 2 , mat: bs3059/620s2 or sa213t11 , joint for lnsertion of plsh and fsh inlet tube , size: 44 . 5x7 , mat: sa213t22 , joint for lnsertion of fsh & frh tubesize: 50 . 8x3 . 6 , mat: sa213t91 , economiser/psh/prh coil lifting , inspection repairing and fitting with proper alignment ( if required for preventive inspection beyond the leakage area ) , platen sh , fsh , frh coil pullinginspection and proper alignment of coil and panel with clit and support welding , second pass scaffolding per 6 meter , common work for stage i & ii , stress relieving , radiography , lremoval and refitting of refractory , replacement of high pressure valve size upto 2 , replacement of high pressure line ( 1/2 to 4 ) ( unit of 01 number includes two joints ) , deinsulation & insulation with claddingof wall , casing and pipe and other area of boiler , hp valve welding from 50 nb upto 100 nbpipe , hp valve gland packing replacementupto 6 , hp valve servicingincluding gland packing & bonnet seal replacement upto 4 , d-metering of boiler tubeat any area of boiler for thickness measurement ( minimum survey 150 nos . /day ) , minimum mobilization chargeif total executed job value less than rs . 15000 . 00 , vertical scaffoldingfor approaching roof tube/ wall reheater/ mrh/ platen/ division panel ( per 6 meter vertical ) for stage i & for approaching furnace/ roof tube/ pendent reheater/ platen/fsh & division panel ( per 6 meter vertical ) for stage ii , horizontal scaffolding for approaching platen sh/ divisional wall/ scw/ roof tubes/furnace ( per 6 meter horizontal ) for stage i & for approaching rh/ platen sh / final sh / divisional panel/scw/ roof tubes/ furnace ( per 6 meter horizontal ) for stage ii , guard tube and guard plateremoval , fabrication and fitting , build up in eroded tubesas per requirement , repairing of skin casing , fabrication of bends of any degreeof any boiler tube , fitting and welding of tube attachmentwherever require , membrane strip fitting & welding , fabrication and erection of steel itemsby ms plate/ ms angle/ ms channel/ i beam etc . , boiler metal temp tc & mounting replace , thermowell replacement in hp line , gst