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)