TWO YEARS RATE CONTRACT FOR...

Amount

Unit Rates to be quoted for Ist year

PART-A (Annexure-A attached) Daily General, Routine Mtc./Break-down Mtc. of Coal Mills, Gravimetric feeders, Seal Air Fans, Fire Fighting and steam inerting system of Unit-6 coal mills, covered under Item No.1 to 5 of Part-A, Annexure-IV of the scope of work.

Part-B UNIT RATE ITEMS (ANNEXURE-B attached) Inspection of Girth Gear and Pinion teeth and adjustment of Pinion for getting required matching and clearances. It includes opening & refixing of sound hood Panels, grease distribution Panel & its lines, girth gear seal air belt & its adjustment also, replacement of Pinion labyrinth seal & pinion bearing servicing, clearance adjustment & filling of fresh grease etc. and normalization.

Removing & refixing of pinion along with DE & NDE bearing housing. It includes replacement of bearing on either end and normalization.

Overhauling of the main reducer, including replacement of coupling halves, bearings, seals, gears, shafts or any other worn out/damaged components if required and normalization.

Replacement of main reducer with new/repaired & serviced reducer and normalization.

Replacement of Aux. reducer and its cleaning, servicing complete work and normalization.

Checking and replacement of mill drive system i.e. Auxiliary motor to Pinion including opening, servicing and refixing of couplings complete work and normalization.

Inspection of support bearing including cleaning of internals & oil spray nozzles, checking of bearing clearance & shell lift and replacement of window gaskets, if required and normalization.

Replacement/opening, repairing & refixing of support bearing liner including shifting the cradle inside the mill and lifting the shell for liner replacement, checking & adjustment of bearing clearances and shell lift and normalization.

Alignment of driving pinion with main reducer, main reducer with main motor and main motor with Auxiliary reducer.

Replacement/dismantlement, complete servicing & assembly of screw conveyor assembly including opening & refixing hot air box, replacement/repair of drive bars & protecting sleeves and screw conveyor alignment, replacement, removal & refixing of bearing housing, replacement of half wear sleeves and felt seals. Adjustment of bearing housing for getting equal clearance in rewelding. Checking & adjustment of clearance of screw conveyor flange with conveyor body. Replacement/repair of hot air tube/body liners of screw conveyor assembly and locking & straightening of ribbon at coal inlet end and normalization.

Replacement of screw conveyor ribbon(complete) including vertical positioning of the screw conveyor assembly and alignment of new ribbon with other ribbons, cutting and removal of old ribbon and chain links and welding on new ribbon, locking & straightening of ribbon at coal inlet end and final adjustment of ;chain links for getting proper running clearances in the trunion tube & normalization.

Replacement/repositioning of liner plates of mill shell including perfect site cleaning, grinding of liners sides, tightening of liner bolts after 50% and 100% ball charging, readjustment of shell liners for shell balancing and normalization.

Removal of balls from mill shell: a) Segregation of balls of more than 20mm dia and filling & sealing in the drums(per drum)

b) Segregation of balls of less than 20mm dia and filling & sealing in drums and transporting to scrap yard (per drum)

Initial Ball charging to mill including transportation of balls from stores (while mills are under capital shutdown or after complete segregation of grinding media) per ton.

Replacement/readjustment of girth gear seal air belt including perfect cleaning of sealing surface, seal counter flange, and the existing belt(for adjustment purpose) and providing proper stiffeners, air tightness check and normalization.

Replacement/readjustment of trunion seal air gasket including perfect cleaning of sealing surface, seal counter flange and providing proper stiffeners, air tightness & normalization.

Replacement of Trunion Tube liners including removal of old liner and fixing of new liner and normalisation. The activity does not involve the removal of the Hot Air Box.

Replacement/Dismantlement, repair and reassembly of classifier outlet gates body and plate including replacement of seals, brass bushing and any other worn out component if any & normalization.

Replacement of ceramic tiles to reduce wear out of classifier outlet gates and normalization.

Replacement/removing, repair & refixing of transit pieces and T pieces including all cutting & welding work and normalization.

Replacement/removing & refixing of purge air expansion joint and purge air duct and all cutting & welding and normalization.

Replacement/removing & refixing of mill outlet elbow including replacement of spool pieces at its outlet pipe and normalization.

Replacement/removing & refixing of orifices in the PF Pipe line and normalization.

Replacement/removing & refixing of Rockwell coupling including replacement of coupling gaskets and normalization.

Putting patch by welding for attending coal leakage at any point, Length, width & thickness of patch piece about 300X250X12.5mm.

Replacement of rubber gaskets of victaulic coupling & normalization.

Replacement of long ceramic bend and normalization.

Replacement of short ceramic bend and normalization.

Replacement/removing & refixing of PF Pipe of 22” dia up to length of 2 Mtr. In the fuel pipe lines & normalization.

Replacement of PF pipe of dia 22” of length more than 2 Mtrs. & up to 5 Mtrs. Long in the fuel pipe line and normalization.

Replacement of centre feed pipe cone(Raw Coal Chute) at the Gravimetric feeder outlet and normalization.

Clearing of chocking of one PF Pipe from classifier outlet to Furnace and normalization.

Clearing of chocking of centre feed pipe from Gravimetric feeder out to mill inlet(either end) and normalization.

Complete Dismantlement, servicing & assembly of Ball feeding gate, burner outlet gate, feeder inlet gate & outlet gate including replacement of any damaged/worn out component if any and normalization.

Servicing & adjustment of damper including replacement of any component, if required, and normalization a) Hot air damper

Servicing & adjustment of damper including replacement of any component, if required, and normalization b) Cold air damper

Servicing & adjustment of damper including replacement of any component, if required, and normalization c) Mixed air damper

Servicing & adjustment of damper including replacement of any component, if required, and normalization d) By pass air damper

Servicing & adjustment of damper including replacement of any component, if required, and normalization e) Purge air damper.

Replacement/opening & refixing of feeder belt including dismantlement and assembly of all relevant components and belt tracking and normalization.

Servicing/Replacement of Dyno Drive System of R.C. Feeders & normalization. It includes replacement of worn out/damaged mechanical parts.

Servicing / Replacement of Main Drive Gear Box & normalization .It includes replacement of worn out/damaged components.

Supply of following manpower for the works on Boiler Area other than above stipulated works with required T & P:- a) Skilled labour

Supply of following manpower for the works on Boiler Area other than above stipulated works with required T & P:-( b) Unskilled labour

Unit Rates to be quoted for 2nd year

PART-A (Annexure-A attached) Daily General, Routine Mtc./Break-down Mtc. of Coal Mills, Gravimetric feeders, Seal Air Fans, Fire Fighting and steam inerting system of Unit-6 coal mills, covered under Item No.1 to 5 of Part-A, Annexure-IV of the scope of work.

Part-B UNIT RATE ITEMS (ANNEXURE-B attached) Inspection of Girth Gear and Pinion teeth and adjustment of Pinion for getting required matching and clearances. It includes opening & refixing of sound hood Panels, grease distribution Panel & its lines, girth gear seal air belt & its adjustment also, replacement of Pinion labyrinth seal & pinion bearing servicing, clearance adjustment & filling of fresh grease etc. and normalization.

Removing & refixing of pinion along with DE & NDE bearing housing. It includes replacement of bearing on either end and normalization.

Overhauling of the main reducer, including replacement of coupling halves, bearings, seals, gears, shafts or any other worn out/damaged components if required and normalization.

Replacement of main reducer with new/repaired & serviced reducer and normalization.

Replacement of Aux. reducer and its cleaning, servicing complete work and normalization.

Checking and replacement of mill drive system i.e. Auxiliary motor to Pinion including opening, servicing and refixing of couplings complete work and normalization.

Inspection of support bearing including cleaning of internals & oil spray nozzles, checking of bearing clearance & shell lift and replacement of window gaskets, if required and normalization.

Replacement/opening, repairing & refixing of support bearing liner including shifting the cradle inside the mill and lifting the shell for liner replacement, checking & adjustment of bearing clearances and shell lift and normalization.

Alignment of driving pinion with main reducer, main reducer with main motor and main motor with Auxiliary reducer.

Replacement/dismantlement, complete servicing & assembly of screw conveyor assembly including opening & refixing hot air box, replacement/repair of drive bars & protecting sleeves and screw conveyor alignment, replacement, removal & refixing of bearing housing, replacement of half wear sleeves and felt seals. Adjustment of bearing housing for getting equal clearance in rewelding. Checking & adjustment of clearance of screw conveyor flange with conveyor body. Replacement/repair of hot air tube/body liners of screw conveyor assembly and locking & straightening of ribbon at coal inlet end and normalization.

Replacement of screw conveyor ribbon(complete) including vertical positioning of the screw conveyor assembly and alignment of new ribbon with other ribbons, cutting and removal of old ribbon and chain links and welding on new ribbon, locking & straightening of ribbon at coal inlet end and final adjustment of ;chain links for getting proper running clearances in the trunion tube & normalization.

Replacement/repositioning of liner plates of mill shell including perfect site cleaning, grinding of liners sides, tightening of liner bolts after 50% and 100% ball charging, readjustment of shell liners for shell balancing and normalization.

Removal of balls from mill shell: a) Segregation of balls of more than 20mm dia and filling & sealing in the drums(per drum)

b) Segregation of balls of less than 20mm dia and filling & sealing in drums and transporting to scrap yard (per drum)

Initial Ball charging to mill including transportation of balls from stores (while mills are under capital shutdown or after complete segregation of grinding media) per ton.

Replacement/readjustment of girth gear seal air belt including perfect cleaning of sealing surface, seal counter flange, and the existing belt(for adjustment purpose) and providing proper stiffeners, air tightness check and normalization.

Replacement/readjustment of trunion seal air gasket including perfect cleaning of sealing surface, seal counter flange and providing proper stiffeners, air tightness & normalization.

Replacement of Trunion Tube liners including removal of old liner and fixing of new liner and normalisation. The activity does not involve the removal of the Hot Air Box.

Replacement/Dismantlement, repair and reassembly of classifier outlet gates body and plate including replacement of seals, brass bushing and any other worn out component if any & normalization.

Replacement of ceramic tiles to reduce wear out of classifier outlet gates and normalization.

Replacement/removing, repair & refixing of transit pieces and T pieces including all cutting & welding work and normalization.

Replacement/removing & refixing of purge air expansion joint and purge air duct and all cutting & welding and normalization.

Replacement/removing & refixing of mill outlet elbow including replacement of spool pieces at its outlet pipe and normalization.

Replacement/removing & refixing of orifices in the PF Pipe line and normalization.

Replacement/removing & refixing of Rockwell coupling including replacement of coupling gaskets and normalization.

Putting patch by welding for attending coal leakage at any point, Length, width & thickness of patch piece about 300X250X12.5mm.

Replacement of rubber gaskets of victaulic coupling & normalization.

Replacement of long ceramic bend and normalization.

Replacement of short ceramic bend and normalization.

Replacement/removing & refixing of PF Pipe of 22” dia up to length of 2 Mtr. In the fuel pipe lines & normalization.

Replacement of PF pipe of dia 22” of length more than 2 Mtrs. & up to 5 Mtrs. Long in the fuel pipe line and normalization.

Replacement of centre feed pipe cone(Raw Coal Chute) at the Gravimetric feeder outlet and normalization.

Clearing of chocking of one PF Pipe from classifier outlet to Furnace and normalization.

Clearing of chocking of centre feed pipe from Gravimetric feeder out to mill inlet(either end) and normalization.

Complete Dismantlement, servicing & assembly of Ball feeding gate, burner outlet gate, feeder inlet gate & outlet gate including replacement of any damaged/worn out component if any and normalization.

Servicing & adjustment of damper including replacement of any component, if required, and normalization a) Hot air damper

Servicing & adjustment of damper including replacement of any component, if required, and normalization b) Cold air damper

Servicing & adjustment of damper including replacement of any component, if required, and normalization c) Mixed air damper

Servicing & adjustment of damper including replacement of any component, if required, and normalization d) By pass air damper

Servicing & adjustment of damper including replacement of any component, if required, and normalization e) Purge air damper.

Replacement/opening & refixing of feeder belt including dismantlement and assembly of all relevant components and belt tracking and normalization.

Servicing/Replacement of Dyno Drive System of R.C. Feeders & normalization. It includes replacement of worn out/damaged mechanical parts.

Servicing / Replacement of Main Drive Gear Box & normalization .It includes replacement of worn out/damaged components.

Supply of following manpower for the works on Boiler Area other than above stipulated works with required T & P:- a) Skilled labour

Supply of following manpower for the works on Boiler Area other than above stipulated works with required T & P:-( b) Unskilled labour

RM TRIPATHI PRIVATE LIMITED (BID ID -1164618)

KG ASHTECH PVT. LTD, (BID ID -1163757)

APEX PROJECTS (BID ID -1164589)