bids are invited for biennial rate contract for maintenance jobs of id / fd fans vane controllers & dampers, burner tilting mechanism, storage tanks, expansion bellows, spring hangers and various structure related jobs of boilers in steam generation plant, rcf (trombay); job-1: replacement of inlet guide vane controller assembly of id / fd fans. a replacement of vane controller assy. of id / fd fans of boiler 25.00 nos 0.00 job-2 : in-situ overhauling & repair of blades and repl. of gearbox of inlet / outlet dampers of id / fd fans: a overhauling & repair of blades of inlet / outlet dampers 25.00 nos. 0.00 b removal, shifting & installation of gearbox of inlet / outlet dampers 20.00 nos. 0.00 job-3 : overhauling of burner tilting mechanism of boilers : a overhauling of burner tilting mechanism of all the 3 boilers 24.00 nos. 0.00 job-4: inspection & repair of storage tanks of boiler & wtp a opening & boxing up of ø 20’’ manhole covers 20.00 nos. 0.00 b erection of scaffolding inside tank 1500.00 m3 0.00 c replacement of damaged ms plate of shell & base plate 80.00 m2 0.00 d blinding of inlet / outlet lines of tank 150.00 inch dia. 0.00 job - 5: replacement of damaged support structures of equipments & galleries, ms duct plates, in boilers / wtp. a replacement of damaged support structures of equipment & galleries of boilers, at all elevations. 30.00 mt 0.00 b replacement of damaged duct plates of boiler. 150.00 sq. mtr. 0.00 c removal & installation of corrugated sheet of furnace wall. 200.00 sq. mtr 0.00 job - 6: replacement of damaged metallic expansion bellows of ducts of id & fd fans of boilers a replacement of metallic expansion bellow of id fan inlet ducting. (size:1202mm x 1802mm x 300mm ) 1.00 nos. 0.00 b replacement of metallic expansion bellow of wind box inlet ducting (size : 1300 mm x 1774mm x 300 mm) 1.00 no. 0.00 c replacement of metallic expansion bellow of id fan discharge ducting (size: 1070 mm x 1760 mm x 300 mm) 1.00 no. 0.00 job - 7: replacement of spring hanger of pipe line / duct a replacement of variable load spring hangers supports including scaffolding erection & structural repairing/modification 6.00 nos. 0.00