West Bengal Power Development Corporation Limited

West Bengal Power Development Corporation Limited has published Rate Contract For Maintenance Jobs Of Unit#3 Under Bm, Ktps.- 1 Job: Part:A 2 COAL MILL WORK: Insertion of Filling Balls & if required, Damaged Balls are to be removed from the Coal Mill 3 COAL MILL WORK: Insertion of Filling Balls. 4 COAL MILL WORK: Replacement of Stirrup assembly & if required Swivel Balls of Stir-rup Assembly are to be changed 5 COAL MILL WORK: Loading Block of Spider replace-ment & allied work as necessary 6 COAL MILL WORK: Total Set of Grinding Ball re-placement 7 COAL MILL WORK: Measurement of wear of GRINDING ZONE: Ring & Ball 8 COAL MILL WORK: Checking of Coal Mill internals 9 COAL MILL WORK:Replacement of Throat Plate & allied work as necessary 10 COAL MILL WORK: Readjustment of Throat Gap & if required necessary repairing jobs between Mill Housing & Throat Plate are to be done 11 COAL MILL WORK: Classifier Blade adjustment 12 COAL MILL WORK: Replacement of Classifier Blade 13 COAL MILL WORK: Total set of Throat Plate replace-ment & allied work as necessary 14 COAL MILL WORK : Replacement of Loading Unit assembly 15 COAL MILL WORK: Replacement of Loading Cylinder 16 COAL MILL WORK: Repairing of Walker Seal/Loading cylinder servicing 17 COAL MILL WORK: Bolt tightening of Mill Housing 18 COAL MILL WORK: Bolt tightening of Loading Units 19 COAL MILL WORK :Cleaning of Rejection passage 20 COAL MILL WORK: Cleaning of Rejection passage along with Scrapper Plate fitting 21 COAL MILL WORK: Replacement after fabrication of Brush Plough Door 22 COAL MILL WORK: Repairing / replacement of knife Gate assembly including all associated work 23 COAL MILL WORK: Repairing / replacement of pyrite Gate assembly including all associated work /SA fan anti vibration pad replacement with associated job 24 COAL MILL WORK: Thorough repairing & refitting of Gravity Damper assembly 25 COAL MILL WORK: Replacement of Mill Housing Lin-er 26 COAL PIPE WORK: Replacement of “Y” piece 27 COAL PIPE WORK: Replacement of Coal Carrying Pipe (CCP) Bends 28 COAL PIPE WORK: Replacement of Straight CCP 29 COAL PIPE WORK: Replacement of NRV after repairing including Hard Facing at corners 30 COAL PIPE WORK: Fabrication & fitting / replacement of Coal Sampler 31 COAL PIPE WORK: Dismantling & refitting of John-son’s Coupling (JC) & Sealing rings. Rockwell coupling fitting with seal rings. Eroded portion of straight CCP carrying JC is to be replaced by welding fresh part of CCP. 32 COAL PIPE WORK: : Coal dust leakage to be stopped by inserting asbestos rope or by tightening the Johnson’s Coupling 33 COAL PIPE WORK: Coal dust leakageto be stopped by application of Sodium silicate / jute packing with grease on leakage point/Burner cleaning / oil top up 34 COAL CLEANING WORK: Cleaning of choked Coal Carrying Pipe 35 COAL CLEANING WORK: Cleaning of Coal Mill inside 36 COAL CLEANING WORK:Cleaning of Coal Feeder box & if required Coal Bunker is to be iso-lated by operating the gates 37 COAL CLEANING WORK: Cleaning of choked Feeder to Mill drop pipe & chute/Loading unit servicing 38 COAL CLEANING WORK:Cleaning of choked Coal Burner Mouth 39 FOREIGN MATERIAL REMOVAL WORK: Removal of foreign material from inside the Coal Feeder box 40 FOREIGN MATERIAL REMOVAL WORK: Removal of foreign material from Coal Mill after necessary checkingof Mill inside & Ring, Ball measurement to be carried out if required 41 FOREIGN MATERIAL REMOVAL WORK: Removal of foreign material after necessary checkingfrom rotary throt of modified Mill, if required by gas cutting. 42 AIR SEAL SYSTEM WORK: Replacement / readjustment of Air Seal system as a whole (upper & lower outer seal) 43 AIR SEAL SYSTEM WORK: Air Seal pipe cleaning & meas-urement of Bottom Air Seal gap 44 PATCH REPAIRING WORK: Patch repair in position by re-quired portion of MS plate weld-ing 45 PATCH REPAIRING WORK:Welding of leakage joints 46 COAL FEEDER WORK: Through repairing of Coal feeder with all necessary work as per scope of work 47 COAL FEEDER WORK: Complete removal of Drag Link Chain & refitting the same after thorough repairing of the chain 48 COAL FEEDER WORK: Bed Height adjustment & if required partial cleaning of coal feeder 49 COAL FEEDER WORK: Replacement of Scrapper bar & Chain link of Drag link chain of Coal Feeder in situ 50 COAL FEEDER WORK : Replacement of Conical Chute 51 COAL FEEDER WORK : Replacement of Drop pipe including fitting of man holes after fab-rication of the same 52 COAL FEEDER WORK : Feeder chain checking & all pin tacking 53 COAL FEEDER WORK : Feeder bearing greasing (4 nos.) 54 COAL FEEDER WORK : Feeder chain tension checking & tightening 55 COAL FEEDER WORK : Replacement of Duplex chain 56 ALIGNMENT WORK: Alignment of Coal Mill motor with Mill Gear box. Gear box holding down bolts tightness to be done. 57 ALIGNMENT WORK: Alignment of Motor with PA Fan. Tightening of Fan bearings are to be done./PA or FD fan bearing replacement work with associated job. 58 ALIGNMENT WORK: Alignment of Motor with FD Fan. Tightening of Fan bearings are to be done. 59 ALIGNMENT WORK: Realignment of Hydraulic Cou-pling with Motor & ID Fan includ-ing tightening of Fan bearing bolts 60 ALIGNMENT WORK: Alignment of Hydraulic Coupling with Motor & ID Fan & if re-quired Hydraulic Coupling is to be shifted / replaced. Tightening of Fan bearing bolts are to be done/Hydraulic coupling servicing 61 ALIGNMENT WORK: Removal & repositioning of Coal Mill / PA Fan motor 62 ALIGNMENT WORK: Alignment of Seal Air Fan with Motor 63 ALIGNMENT WORK: Seal Air Fan bearing replacement with Motor alignment 64 ALIGNMENT WORK: Mill / PA Fan Coupling replacement with Motor alignment 65 FAN & DAMPER WORK: Servicing of Gas Damper & if re-quired bearing are to be replaced 66 FAN & DAMPER WORK: Servicing of Air Damper & if re-quired bearings are to be re-placed/Feeder radicon gear box servicing 67 FAN & DAMPER WORK: PA / FD Fan RVC adjustment 68 FAN & DAMPER WORK: Repairing & Hard facing of ID Fan runner as per scope of work. Only Hard facing electrodes will be supplied by WBPDCL. 69 FAN & DAMPER WORK: Part repairing & Part hard facing of ID Fan runner. Only hard facing electrode will be supplied by WBPDCL. Scope of work is as per enclosed sheet. 70 FAN & DAMPER WORK: PA Fan Impeller checking 71 FAN & DAMPER WORK: Seal Air Fan / PA Fan balancing 72 FAN & DAMPER WORK: ID Fan runner checking & balancing 73 COAL BURNER WORK: Rotation of PF Impeller regulating rod 74 COAL BURNER WORK: Replacement after repairing of Coal nozzle, Impeller, Impeller regulating rod, Guard plate, PA liner including hard facing in the following areas with ESAB 600B electrode: 75 COAL BURNER WORK: Replacement after repairing of Impeller, Impeller regulating rod, Guard plate, PA liner including hard facing like serial no. E/2/b 76 COAL BURNER WORK: Replacement / rotation of Coal nozzle, Impeller, Impeller regulating rod, PA liner & repairing, hard facing of Guard plate. 75% of the Guard plate is to be hard faced with 3 – 4 mm heights. (Hard facing electrode will be supplied by WBPDCL) 77 COAL BURNER WORK: Hard facing of Coal nozzle - 60” X 8” X 3 - 4 mm at the flange end (Hard facing electrode will be supplied by WBPDCL and hard facing is to be done as per direction of Control Engineer) 78 BURNER WORK: Oil burner barrel replacement & associate work 79 WIND BOX WORK: Part repair of Air Register in situ 80 OTHER WORK: Greasing of PA Fan / Mill Coupling 81 OTHER WORK: Attending PA leakage from flange joint between PA Fan & Mill 82 OTHER WORK: Replacement of Mill Gear box oil after thorough cleaning of Gear box internals & its auxiliaries 83 OTHER WORK: Seal Air Fan bearing greasing & coupling checking 84 OTHER WORK: ID / FD / PA / Mill lub oil strainer cleaning 85 OTHER WORK: Replacement of Radicon Gear box 86 OTHER WORK: Oil replacement of Hydraulic Coupling & working oil cooler of ID Fan 87 OTHER WORK: For cooler leakage testing cooling water line isolation & normalisa-tion. 88 OTHER WORK: Replacement of Air seal & cooling water hose of PA Fan 89 OTHER WORK: Fabrication & repairing of Feeder Conical chute 90 PART: B 91 Minimum Monthly Lumpsum Value including labour charge as per minimum wage rate w.e.f 01.01.2024(09 nos category and 12 nos no category worker), 5 nos supervisor charge, 1 no companys own worker, Safety PPEs, tools, tackles, night allowance, consumables charge, other allowances and benefits as per MOS dtd 04.10.2021 and profit (Part: B is excluded of evaluation of tender) . Last date of submission for this tender is 2024-12-16. This is a Brushes tender in Purba, West Bengal