biennial maintenance contract for various maintenance works mandatory works and piecemeal jobs at chp area btps-2 labour wages for mandatory jobs of two years mechanical maintenance contract including belt maintenance at different coal conveying routes at chp, btps. 3 total overhead cost which includes wage & benefits of workers, ppe cost, gpa, tools and tackles, consumables, profit and overheads for the job two years mechanical maintenance contract including belt maintenance at different coal conveying routes at chp, btps. 4 optionaljobs underchp-mm 5 replacement of crusher bearing (nde.) 6 replacement of crusher bearing (de.) 7 replacement of hammer set crusher. (st-2). 8 motor, gear box, pully alignment 9 vs cartidge wheel & bearing replacement 10 replacement of tray vs 11 repairing of body of vs including ismb, perforated plate, hood , checking of base bolt and replacement 12 servicing and replacement with alignment and coupling of gearbox conveyor- 3a/b, 5, u1, u2, u3, boom3a/3b, 12a/b, 13, 14) 13 replacement of drive/head pulley of conveyor including all necessary allied works (11a/ 11b, 7a/7b, 6a/6b, 1a/1b) 14 replacement of take up pulley of conveyor including all necessary allied works 15 replacement of snub pulley, bend pulleyincluding all necessary works 16 mobile tripper overhauling 17 mobile tripper wheel replacement of conveyor including all necessary allied works (11a/ 11b, 7a/7b, 6a/6b, 1a/1b and other same size pulley). 18 gearbox servicing with all other necessary allied works like bearing replacement, housing replacement and lifting/shifting jobs. 19 both side bearing of ilms- replacement 20 repairing of damaged mother & liner plate, supporting elements of frame of flap gate. 21 adjustment of conv. belt, actuator, flapgate etc. 22 motor/gear/ tail pulley head pulley etccanopy or guard/cover preparing & fixing 23 replacement of rail-line for mt/wtper meter. 24 replacement of tega scrapper 25 fixing of hilti bolts (20x170mm) 26 misc. tit-bit repairing/ maintenance. 27 drum lagging including supply of rubber sheet & solution 28 overhauling of dust extraction systemof crusher house 29 pipe line replacement (above-12m) upto--100nb. 30 pipe line replacement (above-12m) above 100nb. 31 replacement of rope of conveyor/hoist 32 renewal/repair work of damaged chute plate by 20/12 mm thk ms plate at different transfer point chute. 33 fitting of had field steel liner platess at chute. 34 fabrication & replacement of gratingof wagon tippler. 35 decking plate replacement. 36 manpower supply ( skilled: 4nos)for night shift during moonsoon period and emergency situation 37 conveyor belt replacement (above 50 mtr.) 38 optionaljobs underchp-em 39 lifting/shifting & replacement with alignment work of l.t.driving motors at easy places 40 lifting/shifting & replacement of l.t./h.t. driving motors withalignment work (11a/b, 10a/b, 9a/b,7a/b, 8a/b, 6a/b, crushermotor 5a/b & 1a/b) etc. 41 repairing & installation of canopyfor driving motor at chp 42 fabrication & fitting of cover for rotating unbalance masses of vibrator motors at conv- u1, u2, u3, 9a, 9b 43 fabrication and erection of new cable tray with supportingstructure & painting job 44 miscellaneous jobs:i) pull chord/belt sway/zss/flap gate limit switch replacement/installation.ii)pull chord rope hook fabrication and fixing with rope replacement.iii)zss object plate installation in case of drum replacement.iv) light pole/structure strengthening and related tit bit job.iv) dismantling of damaged structure like canopy, cable tray, canopy etc.v) vibrator motor unbalance mass adjustment.vi) welding/gas cutting support on requirement.vii) junction box fabrication/installation/sealing and associated mechanical jobs.