preventive & break down maintenance of ash slurry pumps, gsw pumps, sump pumps & other associated equipments of unit no. 4 & 5 of 2x500 m.w. btps, anpara-1 checking and servicing / replacement of drive end (de) and non drive end (nde) bearing of ash slurry pump 2 replacement/refitting of set of v-belts of ash slurry pump. (06 nos. per pump) 3 dismantling & refitting of motor pulley/pump pulley of ash slurry pump 4 removal of jamming / foreign material from casing of ash slurry pump 5 replacement of shaft sleeve/shaft spacer of ash slurry pump 6 checking of fluid coupling of first stage ash slurry pump 7 patching and welding on ash slurry/ bends up to cross over system of ash slurry pump house. 8 checking and servicing / replacement of drive end (de) and non drive end (nde) bearing of gland seal water pump 9 servicing of 450 mm nb cross over valve/suction valves (type : butterfly) 10 replacement of cross over valve/suction valves of size 450 mm nb by new/serviced valve 11 replacement of cross over valve/suction valves of size 450 mm nb by 02 nos. blanking plate. 12 repairing of valve disc (material : cast steel / ductile iron) of butter fly valve of 450 mm nb, installed in cross over and suction line of ash slurry series 13 repairing of damaged & eroded body (material: cast iron) of butter fly valve of size 450 mm nb, installed in cross over and suction of ash slurry pump series 14 replacement of gasket of flange joints of ash slurry pipes at different locations of ash slurry pump series and cross over system. 15 replacement of gasket of suction pipes of first stage ash slurry pumps. 16 replacement/refitting of dislocated / fallen liner plates of ash slurry sump pit 17 servicing of butter fly valves of following sizes including lapping of the valve disc: 17.1 50 mm nb 17.2 80 mm nb 17.3 100 mm nb 17.4 150 mm nb 17.5 250 mm nb 17.6 300 mm nb 18 servicing of non-return valves of following sizes installed in gland seal water line: 18.1 25 mm nb 18.2 80 mm nb 19 complete servicing of motorized discharge valve of ash slurry series, make: audco, size: 18, type: super-h 20 replacement of motorized discharge valve of ash slurry pump series by new/serviced valve 21 minor repairing of valve body & plug of motorized discharge valve of ash slurry pump series, make: audco, size: 18, type: super-h. 22 removal of jamming of motorized discharge valve of ash slurry pump series, make: audco, size: 18, type: super-h 23 cleaning & servicing of agitation header of ash slurry pump pit 24 replacement of rubber gasket of v-j flange adaptor of suction pipe of first stage of ash slurry pump. 25 repairing of frame / body of pen stock valve 26 replacement of s.s. mesh of basket of duplex filter installed in service water line 27 repairing of basket chamber of duplex filter (mat.: cast iron) 28 minor repairing & refitting of damaged gland follower of ash slurry pump 29 replacement of m.s. pipes of following sizes: 29.1 50 mm nb 29.2 80 mm nb 29.3 100 mm nb 29.4 150 mm nb 30 replacement / refitting and alignment of basalt lined pipe bend/ pipe branch inside the pump house /crossover system by new bend/branch or blanking of the line of ash slurry pump series after removal of damaged basalt lined pipe bend/ pipe branch. 31 fabrication & erection of nozzle body in the main sluice ways of unit no. 4 & 5. 32 fabrication and erection of deflector plate of following sizes in the main sluice ways of unit no. 4 & 5. 32.1 1000 mm x 800 mm 32.2 400 mm x 300 mm 33 repairing /replacement of damaged/deflected gratings installed over main sluiceways of unit no. 4 & 5. 34 repairing & refitting/replacement of steel gratings installed over ash slurry sump distribution pits of unit no. 4 & 5. 35 repairing of s.s. sleeves of ash slurry pumps 36 fabrication of flanges of different size from ms plate 37 providing flanges/bends/reducers/tee in existing/replaced pipe lines 38 complete servicing / checking of ash slurry pumps (type: 12/10-ffah, make-warman, u.k.) including replacement of damaged frame plate liners/throat bush liners, volute casing or impellers. 39 complete overhauling of fluid coupling of first stage ash slurry pump (type: 20 scr 24r, make: fluidrive, u.k.) 40 repairing of pedestal bearing shaft of ash slurry pumps.(type: 12/10-ffah, make-warman, u.k.) 41 complete overhauling including replacement of worn out parts of gland seal water pumps (make-bombas itur, spain) 41.1 first stage gsw pump 41.2 second stage gsw pump 41.3 third stage gsw pump 41.4 fourth stage gsw pump/booster pump 42 painting of newly fabricated /modified steel structures, replaced pipings, bends and other equipments etc. 43 pedestal bearing replacement and alignment 44 alignment of fluid coupling