Complete Electrical and Mechanical Maintenance of Coal Handling Plant 3X210MW ATPS Anpara

Amount

Repairing Hot vulcanizing and cold jointing of the conveyor belt

Opening of coupling bolts, removal of counter weights form gravity take up box, clamping of belt. After completion of the work refitting of coupling bolts, putting back counter weight in take up box, removal of clamps and releasing of gravity take up box.

Dismantling of skirt board box duct and After completion of work re-assembly of skirt board box duct

Splashing and Hot / Cold vulcanizing of joints

Laying of Old/Repaired/ New Belt on rollers collected from any point of conveyor/ CHP side store due to damage of belt.

Removal of old and damaged belt and shifting the same to the scrap yard of stores along with all scrap

Conveyor belt lacing (Longitudinal as well as transverse)

Repairing of conveyor belt by Hot/ Cold vulcanising process

Repairing of longitudinal repaired conveyor belt by cold vulcanising process up to 10 Cm width

Repairing of longitudinal repaired conveyor belt by cold vulcanising process above 10 cm to 25 cm width

Repairing of take up trolley replacement strengthening of the rod of gravity take up pulley of conveyor along with its associated work.

Repositioning of folded belt on take up / tail pulley or other pulleys of conveyor along with its associated work.

Laying of Old /New sealing belt on bunker

Removal of old and damaged sealing belt of bunkers and shifting the same to the scrap yard of store along with all scraps

Hot/ cold vulcanizing of joint after splicing of sealing belts of bunker for preparation of joint including all associated work

Laying of new conveyor belt

Opening of coupling bolts of various conveyors

Removal of old conveyor belt

Laying of new conveyor belt

Tensioning of belt

splashing and hot vulcanizing of joints

Cold Rubber Lagging and lining on various Conveyor Pulleys

Cold rubber lagging with 16mm hearings bones grooved/ diamond grooved neoprene rubber having 750 + 50 shore hardness on the pulleys of CHP with all the necessary allied works of de-tensioning of belt, removal of hood etc. normalisation and successful trial run of belt as per scope of work

Fixing of rubber lining on various pulley of CHP by cold process with all the necessary allied works of de-tensioning of belt, normalisation and successful trial run of belt as per scope of work

Reconditioning of Old and used Conveyor belts and making it completely New with original specifications

Repairing & Reconditioning of Old, Used & Damaged conveyor belts of various length and width by hot vulcanizing process in order to get conveyor belts equivalent to original ones as per specification :- Width-1500mm, Nos. of Ply -04, Strength- 1250KN/m, Normal carcass thickness- 6.9mm, Top cover Thickness- 6mm, Bottom cover Thickness -2mm, Material- Nylon/ Nylon Fiber, Molded edge.

Jointing of pieces of repaired conveyor belts by Hot Vulcanizing process.

Work of repairing of spider cone of primary crusher of CHP

Material re-building and maintenance work at cone flange junction of feed end spider of Primary Crusher.

Repairing of feed end spider cone by replacing worn-out liner of inner surface of spider cone of Primary Crusher

Maintenance of the deck Sheet, Bunker gratings and misc steel structure fabrication, erection and strengthening

Removal of old/ damaged deck sheets and erection of New/ recovered deck sheets on the technological structure of conveyor after its fabrication from MS Sheets/ Plates as per scope of work.

Fabrication of new panel grating for bunker and erection at 37 meter bunker bay after proper dismantling of damaged bunker grating.

Fabrication and Erection of various sections of structure by structural steel such as angle, beam, Chanel and plates in following categories Light Section: All section of steel up to 65mm width and plate up to 3.15mm

Fabrication and Erection of various sections of structure by structural steel such as angle, beam, Chanel and plates in following categories Medium and Heavy section: All section of steel beyond 65mm width and plate above 3.15mm

Recovery of steel from scrap steel/ dismantling of steel from any structure and making its usable

Repairing of bunker grating by cutting, straightening and welding

Strengthening of Various structures and Post by welding steel plate on back of structure.

Fabrication and erection of take up post for various conveyors.

Fabrication of Deflector plate and breaker plate of Primary Crusher and Secondary Crusher respectively

Fabrication of Deflector plate for Primary Crusher

Fabrication of Breaker plate for Secondary Crusher

Maintenance of Coal Chutes & other allied works

Patching of holes in Chute (a) Upto 200 mm

Patching of holes in Chute (b) Upto 200-500 mm

Replacement of the liner plates of different sizes and shapes in the Chute.

Replacement of the Mother plates of different sizes and shapes in the Chute

Fabrication and erection of ribs in the Chute/ on the flap gates.

Fabrication erection of the strong walling of different size and shape in the Chute.

Fabrication and fitting of the inspection door with locking arrangement on the Chutes / hood of chutes.

Fabrication & fitting of hinged / fixed coal centering plate with jacking bolt arrangement in the chutes of conveyor / equipment.

Repairing of strong walling of the deferent sizes & shapes in chutes.

Repairing of coal centering plates of the chutes

Replacement / Repairing of ribs of different size and shapes on the chutes of the flap gates.

Tightening of CSK bolt of liner plate etc. & flange bolts and nuts of different chutes.

Fixing of CSK bolt & nuts of liner flange bolts and nuts of chutes.

Replacement of the damaged asbestos sealing ropes from the deferent flanges of chutes and from other parts of chute

Replacement & re-fixing of the holding bolts of the chutes vibrators including positioning of the chutes

Fabrication of new box duct of skirt board and its erection in place of damaged portion by way of cutting and welding

Fabrication of chutes panels and its erection in place of damaged portion of chutes after removal of damaged portion by cutting and welding at different transfer point.

Replacement of liner plates of different size & shapes on the flap gates.

Replacement of mother plates of different size and shapes on the flap gates.

Replacement of damaged / defective key of the flap gate with shaft / counter weights with shaft / actuator lever with shaft.

Rectification of the inside defects of the flap gate/ chute for the free movement on the flap gate.

Providing of sealing of angle iron / plates / channel with stiffeners above the resting position of the flap gate in the chutes.

Repositioning of flap gates and actuator assembly for proper closing/ opening of flap gate

Repairing of the rack pinion gate plate.

Replacement of the rack pinion gate plate.

Replacement of the side supporting rollers of rack pinion gate

Fabrication & erection of sealing rubber of rack pinion gate

Replacement of damaged sealing rubber of rack pinion gate.

Repairing / Replacement of the damaged deck plate of conveyor by cutting / welding etc.

Replacement of the worn out damaged liner of deck of vibro feeders.

Repositioning of dislocated chutes.

Removal of plate / foreign material from the chute by cutting to clear the passage of coal in chute.

Repairing / Repositioning of dislocated / distorted liner mother plate of the chute skirt board

Dismantling, Fabrication and Erection of Rails inside the head chute of conveyor 1A & 1B at TP-1

Work of breakdown maintenance of TT, Gear Boxes, Belt feeders, Vibro feeders and Vibrating screens installed in CHP: TRAVELLING TRIPPER (02 nos.)

Replacement of damaged/ distorted transmission wheel of tripper

Replacement of damaged bearing of tripper carriage shaft.

Replacement of damaged Plummer block of tripper carriage shaft.

Attending oil leakage of gar box by providing gasket etc.

Repairing of main drive chain link

Replacement of main drive chain link

Replacement of drive chain of cable reeling mechanism.

Repairing of driven chain of cable reeling mechanism.

Repairing of driven teeth of main drive/ driven sprockets by welding and grinding

Repairing of drive / driven teeth of cable reeling mechanism

Replacement of sprockets drive/ driven of cable reeling mechanism

Re-alignment of sprockets drive / driven of cable reeling mechanism

Re-alignment of main drive of travelling tripper i.e., motor gear box, drive and driven sprocket

Removal of fouling of tripper wheel with structure

Strengthening of tripper structure whenever required by providing additional angle, channel and ribs etc.

Replacement of damaged bibby coupling along with proper alignment

Replacement of brake shoe liner

Removal of jamming of cable guide roller assembly

Checking of re-alignment and leveling of rail track of tripper.

Replacement / Re-fixing of rail scrapper

Re-alignment of bunker sealing belt by adjusting roller and tension of belt.

Straightening of vertical post of tripper rail by providing stiffeners etc.

Replacement of damaged bearing / Plummer block of rollers of bunker sealing belt.

Replacement of brake assembly mechanism

Repairing of gear box body of tripper by grinding & welding

Repairing of guards & Hand railing of tripper

Replacement of complete gear box by new one/ by taken out gear box from other tripper

Replacement of transmission shaft

Providing of stiffeners in distorted transmission wheel by cutting and welding

Replacement / repairing of shaft of bunker sealing belt roller by cutting & welding

Repairing of shaft of cable reeling drum by welding, grinding and making hole for lock in shaft.

Repairing of brake shoe liner

Repairing of tripper brake drum by welding and grinding

Revisioning of bearing, CRD sprocket assembly

Tightening of check nut of Plummer block of TT shaft.

Re-welding and grinding of stiffeners of TT Wheel.

Replacement of bunker sealing belt rollers of tripper

Replacement of bent / damaged ISMC of size 200 mm of carriage drive Plummer block base frame after jacking of TT by cutting, grinding & welding etc.

Replacement of spring of bibby coupling

GEAR BOXES (conveyor system, crushers)

Replacement of gear box unit by new / taken out from other equipment

Repairing of gear box body by grinding and welding.

Replacement of damaged bearing of input shaft / intermediate shafts/ output shaft by dismantling the complete gear assembly and its re-alignment with driven equipment and motor also.

Replacement of Input shaft / intermediate shafts / output shaft by dismantling the complete gear box assembly and its re-alignment with driven equipment and motor also.

Replacement of oil seals of input / output shaft of gear box by dismantling the complete gear box assembly and its re-alignment with driven equipment and motor also.

Overhauling of gear boxes of conveyor system, belt feeders & primary crushers. This involves opening of gear box cover, cleaning, minor repairs, checking of bearings, re-assembly, alignment & trial run. This will also include alignment of gear box with motor.

Attending oil leakage from gear box by providing gasket etc.

Opening of gear box upper housing for checking of input shaft bearing and checking nut of gear box

Replacement of damaged and distorted jack bolt of gear box by cutting and welding.

Changing of gear box assembly from left hand to right hand and vice –versa.

Removal and re-fixing of matching gear fitted into intermediate shaft.

Removal & Refixing of bearings of input shaft of gear box for repairing of housing, check nut and making thread.

Replacement of upper and lower housing of gear box with new one or by repaired one.

Removal and re-fixing of coupling fitted in input shaft of gear box.

VIBRATING SCREEN (4nos.)

Replacement of damaged supporting springs

Replacement of damaged bottom deck screen cloth

Replacement of damaged oil seals of bearings

Replacement of damaged bearing of drive shaft

Repairing of back cover plates by welding & cutting etc.

Re-fixing of detached back cover plates.

Checking & re-alignment of vibrating screen & motor

Leveling of vibrating screen by providing / removing packing etc.

Re-adjustment of stroke of vibrating screen by removing / adding counter screen weights

Replacement of damaged top deck mesh by welding / cutting

Repairing of damaged top deck mesh by welding / cutting.

Replacement of damaged bottom deck mesh by welding / cutting

Fabrication & fixing of holding down channel for bottom deck mesh

Elimination of any abnormal sound from vibrating screen.

Replacement of damaged sealing rubber

Attending leakage of grease from bearing housing by providing gasket etc.

Replacement of main shaft of vibrating screen by new one/ repaired one.

Repositioning, alignment and welding of spring supporting suspension shaft after dismantling hood etc. if reqd.

Repairing / repositioning of hood of vibrating screen by welding / cutting

Torque setting of all the H.T. bolts by torqe wrench at specified torque including bolts of screen mesh panels.

Replacement of damaged screen bar by cutting and welding

Repairing of damaged bar by welding

Replacement / repairing of damaged canopy of oil chamber by welding & strengthening of screen

Repairing of oil chamber leakage by grinding, welding

Attending oil leakage of inspection pipe of screen

Replacement / repairing of clit base of motor for proper alignment

Replacement of bearing housing of screen

Replacement of inspection pipe line of vibrating screen

Replacement of oil chamber in V.S. by new or by repaired one.

VIBRO FEEDERS (4nos. )

Replacement of damaged supporting spring.

Replacement of damaged gasket of oil chamber

Replacement of damaged bearing by new one

Re-adjustment of stroke of vibro feeder by changing drive pulley of motor

Leveling of vibro feeder by providing / removing packing below supporting springs bed.

Checking and re-alignment of motor with vibro feeder.

Replacement of damaged drive/ driven gears.

Replacement of damaged drive / driven shaft.

Replacement of Vibrator assembly after taking out from other vibro feeders.

Replacement of V-Belt pulley of motor whenever required.

Torque setting of all the HT bolts by torque wrench at specified torque.

Replacement of Pin bush / Plummer block of motor base frame by cutting & welding.

Replacement / Repairing of cracked motor base frame after cutting, grinding & welding etc.

BELT FEEDERS (08nos.)

Replacement of damaged takeup screw by new one after cutting and welding (size 40 x 60 mm)

Checking, re-alignment of complete drive unit i.e. motor, gear box and drive pulley.

FLUID COUPLING

Replacement of damaged driving (resilient plate) of fluid coupling Up to 280KW

Replacement of damaged driving (resilient plate) of fluid coupling Above 280KW to 400KW

Replacement of damaged driving (resilient plate) of fluid coupling Above 400KW to 800KW

Replacement of defective/damaged multidisc of fluid coupling Up to280KW

Replacement of defective/damaged multidisc of fluid coupling Above 280KW to 400KW

Replacement of defective/damaged multidisc of fluid coupling Above 400KW to 800KW

Replacement of defective/worn-out fluid coupling by new one/overhauled one up to100KW

Replacement of defective/worn-out fluid coupling by new one/overhauled one Above 100KW to 280KW

Replacement of defective/worn-out fluid coupling by new one/overhauled one Above 280KW

Replacement of defective/worn-out fluid coupling by taking out coupling from equipment up to 100KW

Replacement of defective/worn-out fluid coupling by taking out coupling from equipment Above 100KW to 280KW

Replacement of defective/worn-out fluid coupling by taking out coupling from equipment Above 280KW

Replacement of Oil seals/O-rings of fluid coupling by taking out the coupling, dismantling, reassembly and alignment up to 100KW

Replacement of Oil seals/O-rings of fluid coupling by taking out the coupling, dismantling, reassembly and alignment Above 100KW to 280KW

Replacement of Oil seals/O-rings of fluid coupling by taking out the coupling, dismantling, reassembly and alignment Above 280KW

Attending minor oil leakage from various fluid coupling

Replacement of Bearing of fluid coupling by taking out the complete fluid coupling, dismantling, reassembly & alignment up to 100KW

Replacement of Bearing of fluid coupling by taking out the complete fluid coupling, dismantling, reassembly & alignment Above 100KW to 280KW

Replacement of Bearing of fluid coupling by taking out the complete fluid coupling, dismantling, reassembly & alignment Above 280KW

6.6KV/0.4KV MOTOR ALIGNMENT

Realignment of gear-box unit assembly with drive unit and trial run up to 50KW.

Realignment of gear-box unit assembly with drive unit and trial run up to 100KW.

Realignment of gear-box unit assembly with drive unit and trial run up to 280KW.

Realignment of gear-box unit assembly with drive unit and trial run above 280KW.

Alignment of the crusher with motor.

Round the Clock checking, Routine and Breakdown maintenance of Stacker cum Reclaimer machine and Vibro feeders of CHP

Checking/ Maintenance and operation work round the clock of Stacker-reclaimer machine & vibro feeders of CHP, ATP, Anpara.

BREAK DOWN MAINTENANCE L. T. Mechanism Repair / Replacement of gear / Bearing of L.T. Gear Box.

Repair / Replacement of gear of track wheel

Replacement of hinged bearing of L.T. Gear box / bearing of track wheel of under carriage.

Overhauling of L.T. Gear box.

Alignment of L.T. gear box with motor

Repair / Replacement of oil seal / ring feeders of L.T. gear box.

Replacement of damaged gasket of L.T. gear box. OR Repair / Replacement of gear track wheel of tripper

Attending oil leakage from the oil pipe line of L.T. gear box.

Repair / Replacement of oil pump break / brake liners of L.T. Gear box / L.T. drive / manual break system.

Replacement of bearing of track wheel of under carriage

Repairing of manual break system / limit operated frame by welding etc.

Fabrication and fittings of limit operated frames.

Replacement of limit operated frames.

Lubrication System

Replacement of pipe line / Gear hose

Replacement of nipples / door feeder

Repair of door feeders. OR Replacement of gear pump coupling

Repair of gear pump.

Repair of lien leakage.

Flushing of jammed pipe line of grease and re-installation in position.

Repairing of manual grease pump.

HYDRAULIC SYSTEM

Replacement of lines.

Replacement of hose / Ferrule / End connector.

Repairing of line leakage from hydraulic lines.OR Repairing of the Knuckle joint stud.

Repair / Replacement of auxiliary cylinder

Cleaning of the hydraulic tank.

Replacement of coupling bush / coupling of hydraulic pump.

Alignment of auxiliary cylinder with respect to tie rod of material gate/ skirt board.

BUCKET WHEEL

Repair / Replacement of Plummer block / bearing / drive side bearing of gear box.

Re-alignment of bucket wheel

Replacement of drive side oil seals of gear box. OR Repairing of ring chute.

Repair of oil pump / re visioning of bearing

Replacement of oil pump with new / repaired one. OR Attending oil leakage of pipe line.

Replacement of coupling / Coupling bush of oil pump OR Repairing of brake drum OR Strengthening of the ring chute by welding.

Replacement of fluid coupling/ gasket of gear box.

Repairing of multidisc/ drive plate of fluid coupling. OR Providing wedge lock on bucket.

Replacement of oil seal of fluid coupling. OR Repair of fluid coupling to avoid oil leakage from flange.

Repair / Replacement of brake mechanism

Repair / Replacement of ring feeder.

Repositioning of the ring chute to bucket

Repairing of bucket by welding and hard facing.

Boom Conveyor and Tripper Car

Replacement of gear box.

Overhauling of gear box/Replacement of oil seal/ Bearing / Gears/Repairing of the tail pulley hold frame.

Repair/ Replacement of ring feeder of gear box. OR Brake mechanism

Replacement of oil seal of fluid coupling/Repair / Replacement of limit switch sprocket.

Replacement of fluid coupling

Repositioning of the bearing drum of pulley of tripper car.

Repairing of Plummer block

Rectification of jamming of bearing of pulley.

Repairing of hinged tie / pin/ brake drum.

Replacement tail / drive pulley of boom conveyor along with replacement / re visioning of bearings and Plummer blocks.

Repositioning of bearing drum of drive pulley of boom conveyor. OR Re tensioning of boom conveyor

Training of boom conveyor belt. OR Repairing of the jack bolt block with jack bolt.

Repairing of the scrappers of boom conveyor tripper car and feed dray

Repairing of the defective idlers of boom conveyor

Replacement of bearings of pulleys of tripper car.

Replacement of Plummer block of pulleys of tripper car.

Repairing of brackets / frames of idlers.

Repairing/ Replacement of chain of limit switch sprocket.

Replacement of defective gasket of gear box.

Repairing of fluid coupling/ multidisc/ drive plate.

Replacement of defective idler of boom conveyor tripper and feed tray.

Fixing of jack bolts on the side of Plummer block.

Tightening of the check nut of bearings of pulleys.

Replacement of scrapper rubber

Slew Mechanism

Replacement / Overhauling of gear box.

Repair of limit switch sprocket.

Attending of leakage from gear box clutch.

Repairing of the thruster brake assembly.

Changing of the lining of thruster brake.

Adjusting the thruster brake.

Material gate / skirt board Mechanism

Repair / Replacement of Plummer block

Replacement of bearing of Plummer block.

Repair/ Replacement of tie rod stud.

Replacement of damaged skirt board material gate rubber lining

Alignment of tie rods with respect to gate.

VIBRO FEEDERS :

Replacement of oil seals of exciter.

Replacement of torque shaft/ supporting spring

Replacement of tension bolt.

Replacement of gear of exciter

Adjusting the stroke of exciter

Replacement of exciter assembly by new / repaired one.

Replacement of coupling shaft by new/ repaired one.

Coupling of exciter with motor after alignment.

Repairing of the flexible coupling shaft with universal joints.

Removal of fouling of vibro feeder deck for making V.F. for free vibrations. OR Leveling of vibro feeder unit.

Overhauling of exciter unit. OR Replacement of bearing of exciter.

Auto Rail Clamp

Changing of brake lining of auto rail clamp.

Round the clock checking, Routine and Breakdown maintenance of Paddle feeders installed in CHP, 3X210MW, ATPS, Anpara

Round the clock checking / Routine maintenance of Paddle Feeder of CHP, ATPS, Anpara

Repairing of resilient plate of fluid coupling by cutting welding and grinding.

Replacement of damaged multi disc of fluid coupling

Replacement of damaged resilient plate of fluid coupling by new / repaired

Replacement & re-alignment of defective / damaged fluid coupling by new or after taking out from other Paddle Feeders.

Replacement of damaged VV coupling by new/ repaired and realignment after replacement of coupling

Replacement of damaged connection spring of VV coupling

Replacement of half geared coupling of hollow shaft.

Repair / Replacement of PIV chain.

Replacement of damaged blades of PF by new/ repaired one.

Complete flushing & cleaning of pipe line & filters etc. of lubricating system of main gear box of Paddle Feeders.

Replacement of damaged bearing of wheel

Replacement of damaged plummer block of wheel

Replacement of rubber rail scrappers (8 Nos. scrappers) / P.F.

Repairing of chain of cable reeling drum.

Repositioning/ removal of jamming and re-adjustment of cable guide roller (2 rollers on each P.F.)

Checking & re-alignment and levelling of rails for travel of P.F. There are two sets of rails and length of rail is about 200 mtrs. for travel of P.F.

Checking & re-alignment of motor, PIV gear box, blade drive gear box and blade mounting shaft.

Checking & re-alignment of motor PIV gear box, fixed base gear box and pivoted base gear box of carriage of P.F.

Replacement of damaged geared coupling of blade, drive gear box and shaft, its re-alignment after replacement. Coupling will be taken out after removing main gear box from foundation.

Repairing of upper bearing supporting structures of blades shaft by heating welding etc.

Re-alignment of cable reeling drum.

Attending leakage of oil from different gear boxes of PF by providing gasket etc.

Repairing of drive / driven sprocket teeth of cable reeling drum by welding grinding and machining etc.

Replacement of drive / driven sprocket of CRD mechanism by new / repaired after taking out from other P.F.

Torque setting of blades fixing bolts (72 Nos. for one P.F.)

Replacement of gear box unit by taking out from other equipment

Repairing of gear box body by grinding welding etc.

Replacement of damaged bearing of Input Shaft / Intermediate shaft / output shaft by dismantling the complete gear box assembly with re-assembly the re-alignment

Repairing of Garland Idler

Replacement of Garland Idler

Repairing of Garland Idler supporting frame by cutting & Welding etc.

Replacement of damaged frame of garland idler.

Replacement of damaged skirt rubber Lining of P.F.

Repositioning of skirt board plate of Paddle Feeders.

Replacement of damaged/ wornout liner plate / motor plate of hopper of P.F.

Re-fixing of detached skirt board plate / element wear plate

Replacement of PIV chain tension shoe

Shifting of PF upto head end/ tail end by dismantling the blade in case of some problem with the blades drive arrangement to clear the travel of P.F.

Replacement of bracket of Garland idlers.

Replacement of tension rod of PIV gear box of carriage.

Replacement of tension rod of PIV gear box of blade feeder

Changing of oil seal of vertical mounting shaft of paddle feeder.

Dismantling of bearing housing (2 Nos.), its 3 Nos. bearing, laybyrinth, adopter sleeve, from TRF make rotor shaft of blade drive and thereafter its assy.

Removal of hexagonal base frame support from rotor shaft for its repairing / replacement and thereafter assembly of bearings, housing etc.

Replacement of Rotor shaft with new one, thereafter fixing of hexagonal base frame support & other assembly work of bearings, housing etc.

Overhauling of PIV gear box of blade drive of M/s. Jaimpex make after shifting it to ‘0’ meter at site workshop.

Overhauling of ESENPRO make main gear box of blade drive after shifting it to ‘0’ meter at site workshop.

Overhauling of PIV gear box and worm gear boxes of M/s. Jaimpex & Esenpro make having ration 20/1 and 50/1 for carriage drive after shifting them to ‘0’ meter at site workshop.

Cutting of foreign materials such as M.S. Plate, Angle , Beam etc. entangled with PF blade with the help of gas etc.

Replacement of fixed coupling with new one/ repaired one of carriage drive of paddle feeder

Replacement of damaged bolts of blade by new one after cutting with gas etc.

Re-railment of paddle feeder

Replacement of damaged 250mm beam , rail etc.

Fabrication & Erection of Base Plate for fixing PF blade.

Major maintenance and repairing works of Primary and Secondary crushers installed in CHP

PRIMARY CRUSHER (04 Nos.) TRF MAKE (ROTARY BEAKER ) Balancing of Rotor of primary crusher OR Removal of jamming of bearing of Guide Rollers

Removal of jamming of bearing of supporting Rollers.

Replacement of damaged bearing of supporting Rollers. OR Replacement of damaged supporting rollers by new one/ taken out from other crusher

Replacement of damaged oil seal of guide rollers.

Replacement of damaged / worn out guide roller assembly by new one/ taken out from other primary crusher

Replacement of damaged Plummer block of supporting Roller

Tightening / loosening of the drive chain

Replacement of damaged chain link

Repairing of chain link

Replacement of complete drive chain

Repairing of damaged teeth of drive/ driven sprocket by welding & grinding in position

Replacement of damaged Sealing rubber liner

Replacement of drive sprocket

Replacement of driven sprocket

Checking & Re-alignment of Rotor Assembly of Primary crusher

Re-adjustment of angle of deflector OR Torque Setting of bolt & nut for fixing driven sprocket to feed end spider (12 Nos.) with a torque of 50-60 Kg-M.

Replacement / re-fixing of detached deflector

Re-adjustment of angle of lifting shelve

Repairing of perforated screen plate by welding & grinding the worn out portion

Replacement of Perforated screen plate

Torque Setting of bolt & Nut for fixing of lifiting shelves & screen plate to beam with a torque of 70-80 Kg-M.

Torque Setting of bolt & nut for refuse plough to screen & blank plate (10 Nos. ) with a torque of 70-80 Kg-M.

Torque Setting of bolt & nut of deflector & screen plate to beam (36 Nos. ) with a torque of 70-80 Kg-m.

Torque Setting of bolt & nut for spider to beam (64 Nos.) with a torque of 140-160 Kg-m. OR Torque Setting of bolt & nut of foundation & crusher housing. OR Repairing of distorted inspection doors of primary crusher by heating, welding & straightening etc.

Torque Setting of bolt & nut of screen plate to beam.

Torque Setting of bolt & nut for fixing Plummer block with a torque of 34-45 Kg. M. OR Torque Setting of bolt & nut for fixing guide roller support to roller supporting structure (21 Nos.) with a torque of 15-20 Kg. M.

Repairing / Re-fixing of refuse plough

Checking of tightness of check nut of bearing of supporting Roller after taking out supporting roller from its foundation & refitting in position.

Re-adjustment of float of rotor assembly of primary crusher

Removal of vibration by strengthening the foundation.

SECONDARY CRUSHER (RING GRANULATORS)

Replacement of complete set of ring hammers (78 Nos.) by new / useable old hammer OR Repairing of damaged & wornout breaker plate by cutting, grinding & welding etc.

Replacement of damaged/ broken ring hammer by new / useable old hammers of each now.

Alignment of Crusher only

Replacement of damaged breaker plate by new / repaired one

Replacement of drive side bearing or withdrawal sleeve of crusher

Replacement of non drive side (free end side) bearing or withdrawal sleeve of crusher

Repairing of damaged tramp iron tray by heating, straightening & welding etc. after dismantling & re-fixing the same in position after repairing.

Repairing of damaged / worn out centre disc by welding, grinding etc. OR Repairing of damaged / distorted inspection door of secondary crusher

Repairing of damaged straight cage side piece by straightening, welding & grinding etc.

Replacement / Re-fixing of straight cage side piece

Torque Setting of foundation bolts of secondary crusher & its other fasteners.

Attending leakage of oil/grease from bearing of secondary crusher by replacing gasket etc.

Rectification of overheating of bearing of crusher

Repairing of end disc by welding grinding etc. OR Repairing / replacement of liner plates of secondary crusher

Replacement of damaged / worn-out plumber block (bearing housing) of secondary crusher.

Elimination of vibration of secondary crusher by removing all its hammers & rebalancing of rotor

Replacement of damaged coupling pads of voith make fluid coupling of crusher

Replacement of defective fluid coupling of crusher

Replacement of defective oil seal of fluid coupling after removal of motor and fluid coupling from its position & normalisation of system.

Repairing of damaged Tie Beams of Primary crushers and replacement with new repaired tie Beams installed in CHP, ATPS

Repairing of damaged Tie Beams of Primary Crusher installed in CHP, 3x210MW, ATPS, Anpara as per scope of work.

Replacement of Tie Beams of Primary crusher as per scope of work.

Work of overhauling of Primary and Secondary Crushers installed in CHP, ATPS

Overhauling of Secondary crusher as per scope of work

Overhauling of Primary Crusher as per scope of work

Work of Overhauling of Vibrating Screens installed in CHP, ATPS

Complete dismantling of Vibrating Screen, repairing/ Replacement of its worn out, damaged parts and thereafter complete re-assembly as per scope of work of CHP, 3x210MW, ATPS Anapara

Fabrication of side plate of vibrating screen with liners with provision for fitment of left and right hand bearing housing.

MAINTENANCE OF LIGHTING SYSTEM, ELECTRICAL HOIST, CABLE LAYING AND MAINTENANCE OF SUSPENDED MAGNETS INSTALLED IN CHP, ATPS

Routine maintenance and attending breakdown of lighting / welding system of coal handling plant of 3x210 MW units for proper lighting and welding supply including checking and minor maintenance of associated equipment.

Operation of Hoist on clock wise

RATE SCHEDULE (b) HOIST Repositioning of entangled steel wire rope, replacement of steel wire rope

Attending fault in the control panel of overhead system including replacement of defective components.

Maintenance of hoist which includes replacement of motors, bearings, cleaning of panels, control circuit, cleaning of monorail & other accessories.

Doing steel wire rope of single/double drum hoists in single rope by removing hook pulley for positioning of conveyor belt and for other works.

Repositioning of steel wire rope with hook pulley in single/double drum hoist after positioning of conveyor belt and other works.

Bringing down the hoist unit from mono-rail of the respective floor for attending the breakdown complete overhauling and repositioning

Bringing down the hoist unit from mono-rail of the respective floor for attending the breakdown,complete overhauling and repositioning

Shifting of hook pulley from hoist to another / replacement by new hook pulley.

Railing/Travelling hoist Motor Breakdown maintenance(along with Motor alignment)

RATE SCHEDULE (c)ELECTRICAL WIRING & POWER CABLE Providing & Installation of 7” x 4” sun mica top wooden board

Providing & Installation of 15A, 240V Anchor make switch socket combined unit with sun mica top wooden board.

Providing & Installation of 15A, 240V Anchor make fuse type switch with sun mica top wooden board.

Providing & Installation of 15A, 240V flush type anchor/ standard quality make switch with three pin socket with sun mica top wooden board.

Installation of Junction box off size

CABLE LAYING / SALVAGING upto 10mm2

CABLE LAYING / SALVAGING Power XLPE Aluminum Cable Above 10 mm2 upto 50 mm2

CABLE LAYING / SALVAGING Power XLPE Aluminum Cable Above 50 mm2 upto 240 mm2

CABLE LAYING / SALVAGING of Power XLPE Aluminum Cable Above 240 mm2 upto 300 mm2

TERMINATION & CABLE GLANDING upto 10mm2

TERMINATION & CABLE GLANDING of Power XLPE Aluminum Cable above 10 mm2 upto 50 mm2

TERMINATION & CABLE GLANDING of Power XLPE Aluminum Cable Above 50 mm2 upto 240 mm2

TERMINATION & CABLE GLANDING of Power XLPE Aluminum Cable Above 240 mm2 upto 300 mm2

STRAIGHT THROUGH JOINT OF CABLE upto 10 mm2

STRAIGHT THROUGH JOINT OF CABLE above 50 mm2 to 240 mm2

STRAIGHT THROUGH JOINT OF CABLE 240 mm2 to 300 mm2

RATE SCHEDULE (d) SUSPENDED MAGNET Attending the fault in the control panel of Oil cooled Suspended Magnets and motors of traveling trolley including replacement of defective components.

Maintenance of Suspended Magnets which include cleaning of control panel, Transformers, Complete cleaning of S/M, Monorail, Checking and maintaining of oil level, maintenance of silica Jel etc.

Maintenance of motorized trolley, Chain pully which includes replacement of motors, bearings and other associated works

Centrifuging of oil of Suspended magnets

RATE SCHEDULE (e) PF & TT Maintenance/ overhauling of PF & TT slip ring assembly,electrical control pannel and other associated work.

Fortnightly checking of electrical control pannel of TT & PF, slip ring assembly , multi core flexible cable of slip ring assembly, DE/DS system and other control cable of panel.

Repairing of LDBS /Junction Box of locating in different places of CHP including fixing of doors, Welding of hinges of doors, repairing/replacing of door lock sysyem, replacement of burnt aluminium/copper bus bar relugging and termination of cables and recommissioning

Floor cleaning of Cable Vaults/galleries

Daily Site Store handling and cartage of material from Central Store to Site Store and vice-Versa of CHP, 3x210MW, ATPS, Anpara

Daily Site Store handling.

Cartage of following materials from central store to the site store of CHD-II, Steel of different sections

Spare parts of machines, plant equipment, consumables and electric items Up to 30 Kg

Spare parts of machines, plant equipment, consumables and electric items Above 30 Kg up to 100Kg.

Spare parts of machines, plant equipment, consumables and electric items Above 100Kg up to 250 Kg

Spare parts of machines, plant equipment, consumables and electric items Above 250 Kg.

Bolts, nuts washer, consumables including welding electrodes, jutes, cloths etc.

Cartage of other material which will be used in CHP from central / plant store to site & vice –versa. This will include rubber items, gaskets, sheets, cork sheets, hose pipe etc.

Cartage of lubricant from different plant store to site store and vice-versa.

Cartage of scraps from site store of CHP, welding and their stacking in central store steel scrap yard.

Cartage of cable /conveyor belt bunches / drums from central store to site store and vice-versa.

Removal of foreign materials form the container placed below the Suspended Magnet at Pent House of TP-1, over conveyor 5A/ 5B near TP-4 and cartage to steel scrap yard of CHP.

Repairing of Hydraulic Jack 100 MT

Repairing of Hydraulic Jack 50 MT

Repairing of Hydraulic Jack 20 MT

Maintenance of 6.6 KV and 0.4 KV motors and rewinding of 0.4 KV motors installed in CHP RATE SCHEDULE PART-A (6.6KV motor maintenance) Bearing replacement

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Bearing revisioning with change of lubricant and cleaning.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Removal of damaged motor from foundation after decoupling and cable disconnnection etc.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Greasing of bearings.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Re-erection of new motor after revisioning dry out and test.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Overhauling of motor

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Dry out of motor

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

In application of insulating on stator wedge,tighting and adustment etc.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Revisioning of cooling/fans tighting

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Cleaning of heat exchanger.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Cable box/ terminal box repair, change of insulator/leads etc.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Space heater repair/replacement work.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Dismantling of damaged motor for removal of motor

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Modification of base frame tralley for 6.6 KV motor & gearbox.

Re-assembly of dismantled motor

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Trasportion from store to site or place to place or vice-versa.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Dismantling and assembling of heat exchanger of motor

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

Repair of cracked rotor bars.

Upto 280 KW

Above 280 KW up to 400 KW

Above 400 KW up to 800 KW

RATE SCHEDULE PART-B (i) Overhauling of motors and DC Generators as and when required.

Upto 1 Kw

Above 1 KW upto 5 KW

Above 5 KW upto 15 KW

Above 15 KW upto 25 KW

Above 25 KW upto 175 KW (Rate is to be quoted in Rs/ KW)

Replacement of Motors/ DC Generators

Upto 1 Kw

Above 1 KW upto 5 KW

Above 5 KW upto 15 KW

Above 15 KW upto 25 KW

Above 25 KW upto 175 KW (Rate is to be quoted in Rs/ KW)

Overhauling of Roof ventilation fan at 37 mtr level

Bus bar tightness at site of S/R machine No. II. Dust extraction, Dust suppression

RATE SCHEDULE B (ii) Tightening of connection plates of 6.6 KV and 0.4KV motor (min 140 Nos. of Motors)

Servicing of Control Panels,LCCs,JBs. (min 50 Nos.)

Greasing of 0.4KV motors

Rate SCHEDULE PART- C (0.4KV motor rewinding) Rewinding of tripping / closing coil of 220V DC for 6.6 KV Jyoti make breaker

Vaccum Contactor

Rewinding of control transformer of input0-375 –415 VA of following specification

Upto 200 VA rating

Above 200VA to 400 VA rating

Above 400VA to 1000 VA rating

Above 1000 VA to 1500 VA rating

13000 VA rating

Rewinding of MLC Contrator coil of BHEL make with Coil voltage 110V DC and current rating of 150 Amps.

Rewinding of 0.4 KV Motors upto 10 KW capacity

Upto 1 Kw

Above 1 KW upto 5 KW

Above 5 KW upto 10 KW

Rewinding of 0.4 KV Motor above 10 KW upto 175 KW(rate is to be quoted in Rs/KW)

Rewinding of D.C. Motors of CHP

Rewinding of D.C. Generators of CHP

Rewinding of hooters (Fractional H.P.)

Repair of damaged rotor of chain hoist by brazing etc.

Rewinding of following fan motors.

Ceiling fan

Cabin fan for operator

Exhaust fan of desert cooler

Painting of Motor body 15 KW to 175 KW

Replacement of bearing of 0.4KV Motors/DC generators.

Upto 1Kw.

Above 1Kw to 5Kw

Above 5KW to 15 KW

Avove 15 KW to 25 KW

Avove 25KW to 175 KW

Maintenance of 6.6 Kv Jyoti make Breakers , Power Transformers, 0.4 KV modules, MCC and electrical Panels of CHP

Daily checking of 52 Nos. Jyoti make MOCB/VC and 04 Nos. 6.6/ 0.4 KV Transformer

Dismantling and re-assembly of breaker

Overhauling of complete Breaker (Breaker mechanism and pole parts)

Overhauling of pole parts only.

Overhauling of L.T. Transformer

Centrifuging of oil of L.T. Transformer

Cleaning of complete L.T. Transformer

Arresting of oil leakage from pipe line joints etc. of the transformer

Cleaning of Transformer yard area and its surrounding

Maintenance of 6.6 KV Bus (Cleaning, checking/ tightness & repairing)

Replacement of CT’s with new/old one of 6.6 KV breaker

Internal and external cleaning of CHP Electrical Panels, MCCs, DE/DS, JBs, LCCs, LDBs, etc as per scope of work.

Daily checking and maintenance of Siemens make 0.4 KV module of switch gear rooms ACDB-I and ACDB-II as per scope of work.

Routine mechanical and Breakdown maintenance (Main and Reclaim stream) of CHP 3X210 MW, ATPS Anpara

Routine mechanical maintenance and lubrication of equipments of main & Reclaim stream of CHP of 3X210MW units.

Repairing of damaged Impact/ Flat Impact Idler

Repairing of damaged Troughing/ Transition/ Return idler.

Replacement of damaged Impact/ Flat Impact Idler.

Replacement of damaged Troughing/ Transition/ Return Idler.

Repairing of Idler frame/ bracket by cutting, welding and machining

Replacement of damaged frame/ bracket

Servicing/replacement of damaged plumber block/ bearing/ Adopter sleeve

Head Pulley/ Drive Pulley

Gravity Take-Up Pulley

Snub Pulley/ Bend Pulley

Tail Pulley/ Magnetic Pulley

Traveling Tripper Pulley

Replacement of damaged pulley

Head Pulley/ Drive Pulley

Gravity Take-Up Pulley

Snub Pulley/ Bend Pulley

Tail Pulley/ Tripper Pulley

Reposition of shifted pulley shaft

Head Pulley/ Drive Pulley

Gravity Take-Up Pulley/ Snub Pulley

Bend Pulley/ Tripper Pulley

Tail Pulley/ Magnetic Pulley

Removal of pulley from the foundation after de-tensioning ets. on the belt for replacement in another conveyor.

Providing mechanical stopper on pulley face to prevent relative movement between hub and pulley.

Dismantling of hub and shaft of damaged pulley and its re-assembly after repair.

Replacement of sheared/ damaged hub bolts of different pulley

Checking of tightness of chuck nut of bearing of pulley.

Fabrication and fitting of end diaphragm plate on the pulley drum

Repairing of take-up guide and their positioning, strengthening etc.

Replacement of damaged gear coupling

Replacement of damaged jack bolt, jack plate of plumber block motor etc.

Checking and re-alignment of drive unit of RPG and FG

Replacement of damaged knuckle joints of flap gate

Replacement of damaged driving brass unit of FG

Replacement of damaged skirt board rubber of all conveyor and belt feeders

Replacement of damaged rubber of belt scrapper (Head scrapper/ Tail scrapper)

Replacement of damaged rubber lining of back cover plate of skirt board/ rubber of front side of skirt board.

Repairing of scrapper by cutting, welding, and machining etc.

Re-welding of diaphragm plate of various pulleys with drum whenever there is a crack.

Welding of hub of pulley with shaft wherever there is excessive gap between hub and shaft by providing circular ring of MS Plate (10-16mm)

Fabrication, fitting and welding of stiffener plate (10-16mm) with diaphragm plate to drum (04Nos.) on each face of pulley.

Removal of damaged bolt of skirt board plate and welding of new bolt in position for fixing of skirt rubber.

Fabrication of MS plate with slotted holes for fixing on skirt board plate.

Repairing of take-up trolley of conveyor of reclaim root.

Strengthening of take-up trolley frame of reclaim root.

Repairing/ replacement of take-up trolley wheels and its associated work for reclaim root.

Overhauling of flap gate actuator assembly.

Rip-Repairing of Conveyor Belt

Rip-repairing of longitudinally cut conveyor belt having original width of 1500mm, 4 nos. Nylon plies by HOT steam vulcanizing process, of CHP,ATPS,Anpara.

Jointing of Rip-repaired longitudinal cut belt by hot steam vulcanizing process.

Rate contract for the work of complete rewinding of stator coils, restaggering of core and complete repairing of rotor of different ratings from 180 KW to 800 KW of 6.6KV motors installed in CHP 3x210 MW, ATPS, Anpara

Complete rewinding of stator coils with all new copper coils of class F insulation: 161 KW to 185KW

Complete rewinding of stator coils with all new copper coils of class F insulation: 186KW to 200KW

Complete rewinding of stator coils with all new copper coils of class F insulation: 201 KW to 225KW.

Complete rewinding of stator coils with all new copper coils of class F insulation: 226 KW to 300KW

Complete rewinding of stator coils with all new copper coils of class F insulation: 301 KW to 430 KW

Complete rewinding of stator coils with all new copper coils of class F insulation: 431 KW to 560KW

Complete rewinding of stator coils with all new copper coils of class F insulation: 561 KW to 800 KW

Staggering of stator core: 161 KW to 185KW

Staggering of stator core: 186KW to 200KW

Staggering of stator core: 201 KW to 225KW

Staggering of stator core: 226 KW to 300KW

Staggering of stator core: 301 KW to 430 KW

Staggering of stator core: 431 KW to 560KW

Staggering of stator core: 561 KW to 800 KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 180KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 200KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 225KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 275KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 280KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 395KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 400KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 450KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 560KW

Partial repairing of rotors using new set of bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars) 800KW

Fabrication of new rotor bars of above rotor:180KW

Fabrication of new rotor bars of above rotor:200KW

Fabrication of new rotor bars of above rotor:225KW

Fabrication of new rotor bars of above rotor:275KW

Fabrication of new rotor bars of above rotor:280KW

Fabrication of new rotor bars of above rotor:395KW

Fabrication of new rotor bars of above rotor:400KW

Fabrication of new rotor bars of above rotor:450KW

Fabrication of new rotor bars of above rotor:560KW

Fabrication of new rotor bars of above rotor:800KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 180KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 200KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 225KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 275KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 280KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 395KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 400KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 450KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 560KW

Repairing of rotors with complete set of new copper bars in place of old and damaged bars of rotors including its core staggering (excluding cost of new bars): 800KW

Repairing of Paddle Feeder Blades

Repairing of the blades of the Paddle feeder taking cost of special welding electrodes for PF Blade Tips and hard facing of the PF Blades.

ROHINI TRANSPORT CORPORATION

Lokenath Construction Private Limited