tender for Mechanical Maintenance Of Various Pump Of Ash Handling Plant And Associated Auxiliary. Mechanical Maintenance Of Various Pump Of Ash Handling Plant And Associated Auxiliary For Ahd,2X500mw, Btps, Anpara., 1 Routine preventive maintenance of HP/LP ash water pumps, Booster pumps for Economizer Hoppers and connected equipment’s (One job means providing Un skilled labour in 03 shifts, each shift of 08 Hr. duration) 2 Cleaning & removal of dust, cobweb, grease/oil etc. from ash slurry pump HP/LP pump, Booster pumps for Economizer Hoppers GSW pump etc. & connected equipment’s like valves & lines inside the pump house and cross over system. 3 General upkeep of floors, walls and roof in ash slurry and ash water pump house, AHP control room, switch gear room, external cleaning of electrical panels etc. (Daily). 4 Removal of choking of sewage pipe / septic tank for proper flushing of sewage from toilets located in ash slurry and ash water pump house. (Once in a month). 5 Removal of choking at discharge grating of sump distribution pits in running condition of unit # 4 & 5. 6 Providing round the clock assistance in operation of systems/ site equipment’s & Routine preventive maintenance of Ash Slurry Pumps & GSW pumps etc. and connected equipment’s pertaining to ash slurry pump house of unit no. 4& 5 of 2x 500 M.W. ‘B’ TPS, Anpara (One job means providing round the clock assistance in 03 shifts, each shift of 08 hours duration) 7 Checking and servicing / replacement of Drive end (DE) and non-drive end (NDE) bearing of ash slurry pump 8 Replacement/refitting of set of V-belts of ash slurry pump. (06 Nos. per pump) 9 Dismantling & refitting of motor pulley/pump pulley of ash slurry pump 10 Removal of jamming / foreign material from casing of ash slurry pump 11 Replacement of shaft sleeve/shaft spacer of ash slurry pump 12 Checking of fluid coupling of first stage ash slurry pump 13 Patching and welding on ash slurry/ bends up to Cross Over System of Ash Slurry Pump House. 14 Checking and servicing / replacement of Drive end (DE) and non-drive end (NDE) bearing of Gland Seal Water pump 15 Servicing of 450 mm NB cross over valve/suction valves (Type: Butterfly) 16 Replacement of cross over valve/suction valves of size 450 mm NB by new/serviced valve 17 Replacement of cross over valve/suction valves of size 450 mm NB by 02 Nos. blanking plate. 18 Repairing of valve disc (Material: Cast steel / ductile iron) of butterfly valve of 450 mm NB, installed in cross over and suction line of ash slurry series 19 Repairing of damaged & eroded body (Material: Cast Iron) of butterfly valve of size 450 mm NB, installed in cross over and suction of ash slurry pump series 20 Replacement of gasket of flange joints of ash slurry pipes at different locations of ash slurry pump series and cross over system. 21 Replacement of gasket of suction pipes of first stage ash slurry pumps. 22 Replacement/Refitting of dislocated / fallen liner plates of Ash Slurry Sump Pit 23 Servicing of butterfly valves of sizes including lapping of the valve disc:50 mm NB 24 Servicing of butterfly valves of sizes including lapping of the valve disc:80 mm NB 25 Servicing of butterfly valves of sizes including lapping of the valve disc:100 mm NB 26 Servicing of butterfly valves of sizes including lapping of the valve disc:150/200 mm NB 27 Servicing of butterfly valves of sizes including lapping of the valve disc:250 mm NB 28 Servicing of butterfly valves of sizes including lapping of the valve disc:300 mm NB 29 Servicing of butterfly valves of sizes including lapping of the valve disc:350/400 mm NB 30 Servicing of non-return valves of sizes installed in Gland Seal Water line:25 mm NB 31 Servicing of non-return valves of sizes installed in Gland Seal Water line:80 mm NB 32 Complete servicing of motorized discharge valve of ash slurry series, Make: Audco, Size: 18, Type: Super-H 33 Replacement of motorized discharge valve of ash slurry pump series by new/serviced valve 34 Minor repairing of valve body & plug of motorized discharge valve of ash slurry pump series, Make: Audco, Size: 18, Type: Super-H. 35 Removal of jamming of motorized discharge valve of ash slurry pump series, Make: Audco, Size: 18, Type: Super-H 36 Cleaning & servicing of agitation header of ash slurry pump pit 37 Replacement of rubber gasket of V-J flange adaptor of suction pipe of first stage of ash slurry pump. 38 Repairing of frame / body of pen stock valve 39 Replacement of S.S. mesh of basket of duplex filter installed in service water line 40 Repairing of basket chamber of duplex filter (Mat.: Cast Iron) 41 Minor repairing & refitting of damaged gland follower of ash slurry pump 42 Replacement of M.S. pipes of sizes:50 mm NB 43 Replacement of M.S. pipes of sizes:80 mm NB 44 Replacement of M.S. pipes of sizes:100 mm NB 45 Replacement of M.S. pipes of sizes:150 mm NB 46 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. 47 Fabrication & erection of nozzle body in the main sluice ways of unit No. 4 & 5. 48 Fabrication and erection of deflector plate of sizes in the main sluice ways of unit No. 4 & 5.1000 mm x 800 mm 49 Fabrication and erection of deflector plate of sizes in the main sluice ways of unit No. 4 & 5.400 mm x 300 mm 50 Repairing /replacement of damaged/deflected gratings installed over main sluiceways of unit No. 4 & 5. 51 Repairing & refitting/replacement of steel gratings installed over ash slurry sump distribution pits of unit No. 4 & 5. 52 Repairing of S.S. sleeves of Ash Slurry Pumps 53 Fabrication of flanges of different size from MS plate 54 Providing flanges/bends/reducers/Tee in existing/replaced pipelines 55 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. 56 Complete servicing of fluid coupling of first stage Ash Slurry Pump (Type: 20 SCR 24R, Make: Fluidrive, U.K.) 57 Repairing of pedestal bearing shaft of ash slurry pumps. (Type: 12/10-FFAH, make-Warman, U.K.) 58 Complete servicing including replacement of worn-out parts of Gland Seal water Pumps (First stage GSW pump) /Booster Pumps 59 Complete servicing including replacement of worn-out parts of Gland Seal water Pumps Second stage GSW pump 60 Complete servicing including replacement of worn-out parts of Gland Seal water Pumps Third stage GSW pump 61 Complete servicing including replacement of worn-out parts of Gland Seal water Pumps Fourth stage GSW pump 62 Checking and servicing/replacement of D.E. (ball) & N.D.E. (thrust roller) bearings of H.P. pump 63 Checking and servicing/replacement of D.E. (ball) & N.D.E. (thrust roller) bearings of L.P. pump 64 Repairing of valve disc (Material: Cast steel/ Ductile iron) of butterfly valves of sizes 250/300 mm NB 65 Repairing of damaged & eroded body (Material: Cast Iron) of butterfly valves of sizes 250/300 mm NB 66 Servicing of NRVs of HP/LP pumps of size:250 mm NB 67 Servicing of NRVs of HP/LP pumps of size:300 mm NB 68 Repairing/replacement of hinge bracket of NRV of HP/LP pump 69 Repairing/replacement of valve disc of NRV of HP/LP pump 70 Replacement of gaskets of flange joints of ash water pipes at different locations 71 Replacement/dismantling and refilling of expansion bellows of HP/LP pumps 72 Servicing of 25 mm NB air release vents, installed in ash water line 73 Fabrication of 250 mm NB column pipe of HP pumps 74 Fabrication of 300 mm NB column pipe of LP pumps 75 Fabrication of flanges of different size from MS plate 76 Providing flanges / bends/reducers/Tee in existing/replaced pipelines 77 Patching and welding on ash water pipe/bends (HP/LP pipeline). 78 Preventive Checking/ Replacement of lower shaft assembly, bearings bushes, Impeller assembly, Pump Bowls, intermediate shaft assembly, bearings sleeve and Top shaft assembly of H.P. Pumps 79 Preventive Checking/ Replacement of lower shaft assembly, bearings bushes, Impeller assembly, Pump Bowls, intermediate shaft assembly, bearings sleeve and Top shaft assembly of L.P. Pumps. 80 Repairing of Top shaft HP/ LP Pumps, Make: Bombas Itur Spain. 81 Breakdown maintenance/servicing of hoist system 82 Preventive coating on submerged parts of HP/LP Pumps 83 Repairing of damaged coupling half (Metal: Grey Cast Iron) of H.P. water pump, Make: Bombas Itur Spain. 84 Painting of Pump/newly fabricated/modified steel structures and other equipments etc. 85 Repairing of Collar of basalt branch / bend, OD: -526 mm, & ID: - 456 mm 86 Repairing of Basalt branch / bend OD: -526 mm, & ID: - 456 mm 87 Pedestal bearing replacement and alignment 88 Alignment of Fluid Coupling
