Work of Breakdown maintenance , overhauling/ Servicing of pumps, blowers, mixers, valves, clarifiers & attending the leakage of pipe lines, replacement of damage structure / railings, supports of pipe lines & vessels etc. & other allied works of W.T.P, C.P.P, and W.W.T.PLANT, dosing systems of WTP, 2x500 MW, BTPS, Anpara- Complete overhauling / servicing of following pumps, blowers, Fan, mixers etc. this includes the complete dismantling of the equipment, cleaning & checking, re-visioning of various parts, replacement of worn out parts, if required by new / repaired parts, alignment of auxiliary with motor andcoupling. all overhauled / serviced equipment must be re-painted with one coat of Epoxy primer & two coat of Epoxy paint for the protection of pump, etc. after completion of work. Re-commissioning of equipment & trial run. [one job will be given for each pump / Blowers / Fan / Mixture / Clarifiers basis] 2 PUMPS 3 Raw Water Pump 4 Sludge Pump 5 Filter Back Wash Pump 6 Clarified Water Pump 7 Service Water Cooling Pump 8 Coagulant dosing pump (Reciprocating type) 9 Coagulant Transfer pump 10 Demin Plant Inlet Pump 11 Degasser Water Booster 12 Regeneration 13 D. M. Transfer 14 Alkali Preparation 15 Anion Hot Water 16 Acid Transfer 17 CPP Booster 18 CPP Regeneration 19 Ammonia Recycle 20 Ammonia Unloading 21 Sump Pump 22 Pit -3 Dewatering pumps 23 Discharge Pump 24 Ammonia transfer pump 25 Phosphate transfer pump 26 Hydrazine transfer pumps (Gear pump) 27 Ammonia injection pump 28 Hydrazine injection pumps 29 Phosphate injection pump 30 Submersible sump pumps 1.5Kw 31 Submersible sump pumps 0.75 Kw 32 Submersible sump pumps 3.7Kw 33 BLOWERS AND FANS 34 Filter Back wash Air Blower [PT Plant] 35 Demin Air Blower [DM Plant] 36 Regeneration Unit Air Blower [CPP] 37 Air Blower [Waste Water System] 38 Degasser Fan [DM Plant] 39 Mixers with Vertical Spindle & Motor Driven, 40 CLARIFICATOR 41 CLARIFICATOR oil pump Drive 42 Clarifier Scrapper & Turbine Drive 43 BREAK-DOWN MAINTENANCE 44 This includes generally the jamming of pumps due to ingress of foreign material in pump casing/ impeller. For attending the pump has to be dismantled from suction side/ delivery side, including realignment of pump. For removal of choking in the bearing cooling/ gland cooling all the connected lines has to be dismantled & cleaned thoroughly & then assembly of system. For changing ratchet plate, spacers, stuffing box, sealing ring, etc. the motor above the pump has to be lifted & fault has to be attended by dismantling the other necessary parts of pump. After attending the fault the system hasto be normalized for running including placement of motor alignment & coupling. 45 Raw water pump, Sump pump CPP & Pit-3 Sump pump. 46 Replacement of ratchet plate 47 Replacement of worn out gland cover of stuffing box holding bolts. 48 Replacement of worn out rubber spacer of coupling. 49 Replacement of worn out bearing. 50 Replacement of sealing ring of stuffing box. 51 HORIZONTEL CENTRIFUGAL PUMP 52 Removal of jamming of impeller because of ingress of foreign material. 53 Replacement of damaged bearings of pumps. 54 Replacement of worn-out pump casing gasket / O ring. 55 Removal of jamming of Alum transfer pump. 56 Reciprocating Type Pump 57 Replacement of Pump Diaphragm. 58 Replacement of Venire Pump 59 Arresting of pump leakage either from pump oil side or from chemical side. 60 Replacement of pump coupling/ Coupling hubs & associated works. 61 General Break down 62 Providing of new foundation bolts, casing bolts/studs etc. of the equipment after taking out broken studs/bolts by way of drilling tapping etc. on channel foundation. 63 Replacement of following valves with new / repaired valves by dismantling and of old valve from system and fitting of new / repaired valve.. 64 Butterfly valve ( 50 mm to 600 mm) 65 Plug Valve ( 20 mm to 200 mm) 66 Diaphragm valve (08 mm to 200 mm) 67 Check Valves ( 25 mm to 500mm) 68 Ball Valve ( 40mm to 100mm) 69 Gate valve( 15mm to 300 mm) 70 Re-visioning /overhauling / servicing of hand/ pneumatic/ electrical operated following valves only mechanical portion of valve. 71 Butterfly valve ( 50 mm to 600 mm) 72 Plug Valve ( 20 mm to 200 mm) 73 Diaphragm valve (08 mm to 200 mm) 74 Check Valves ( 25 mm to 500mm) 75 Ball Valve ( 40mm to 100mm) 76 Gate valve( 15mm to 300 mm) 77 Pump Re-circulation valve(200NB) 78 Instrument Isolating valve (1/2 to 3/8) 79 Modulating control valve(100mm NB) 80 Pressure reducing and pressure relieving valve of following size 81 1x1/2 82 1x2 83 2x3 84 80 mm 85 100 mm 86 150 mm 87 Servicing & Overhauling of pneumatic / electrically operated penstock gates of gravity filter, channel inlet, gravity filter inlet & gravity filter back wash outlet only mechanical portion . 88 Replacement of C.I./ M.S. Pipe of flange/ weld joint including removal of old pipe (20mm to 450mmNB) by cutting including dismantling & transportation to WTP store.[This includes laying, transportation of pipe & necessary required material from store to work site lifting to work site, cutting, welding, preparation of necessary bend, tee, off set, of pipe lines, clamping, providing vent if required, jointing with nut bolts, welding, welding of flanges, valves including removal of old pipe (15 to 450NB) by cutting including dismantling & transportation to WTP store & any other work required for the completion of pipeline etc.] 89 Erection of New C.I. / M.S./G.I./ MSRL/HDPE Pipe of flange/ weld joint(15mm to 450mmNB) [This includes laying, transportation of pipe & necessary required material from store to work site lifting to work site, cutting, welding, preparation of necessary bend, tee, off set, of pipe lines, clamping, providing vent if required, jointing with nut bolts, welding, welding of flanges & valves, & any other work required for the completion of pipe line etc.Note:- For the painting of erected pipelines with one coat of primer of first quality, followed by two coats of approved colour of first quality paint, item no. Part –D, 1,2,3 & 4 can be utilised, and Item no. Part – E- a) & b) can be utilised for the erection of support & structure.] 90 Attending the leakages from sludge pipeline joints including joint dismantling, re-fixing/replacement of rubber ring & rejoining with alignment. 91 Attending leakagea from 25mm to 450mm pipe line of DM water transfer pipe,Service water pipe, Waest water pipe & other miscellaneous pipe by cutting welding etc.including excavation.Dewtering if required and back filling etc. 92 Attending the leakages from Acid/ Alkali transfer pipeline joints ( Made of HDPE) including joint dismantling, re-fixing /replacement & rejoining(ByMirror jointing kit or suitable jointing resin) with alignment. 93 Surface protection & Painting work as and when required to prevent damage of system by chemical reaction. 94 Surface cleaning, preparation & application of one coat of Epoxy primer (Epilux-610) on the old surface for protection of surface up to 5 sq. meter in single job. 95 Application of two coat Epoxy paint (Epilux- 4) on the old surface for protection of surface up to 5 sq. meter in single job. 96 Surface cleaning, preparation & application of one coat of primer paint on the old surface for protection of surface up to 5 sq. meter in single job. 97 Application of two coat Enamel paint on the old surface for protection of surface up to 5 sq. meter in single job. 98 Repairing of damage Acid proof Brick Lining including cost of material required to complete the work. 99 Pointing work of brick lining including cost of material required to complete the work. 100 Mastic lining work including cost of material required to complete the work. 101 Resin lining work including cost of material required to complete the work. 102 Repair and fabrication of structure and new items 103 Replacement of damage structure, railing & support of vessels. 104 Fubrication of Flang of different sizes From MS/Steel Plate by cutting/drilling/grinding. 105 Fubrication of Pipe/bend/reducer/Tee of different sizes fram MS pipe by cutting /welding/bending/drilling and grinding.(teken fom new/old MS pipe) 106 Fabrication work of the various structure /and item by using various steel sections [new / old taken from scrap] 107 Overhauling & repairing of Gravity Filters 108 Removal of filter media by collection , lifting from the bed of filter ,stacking at ground floor on clean surface, cleaning by water, sheaving with different size of sheaves, separation of filter media in different size, refilling as per instruction of Engineer of contract in filter in different thickness after repairing of filters internal, replacement of damaged parts & necessary repair if any complete in all respect 109 Epoxy painting two coats after cleaning & preparation of surface on the internal/ external surface of filters only with item no Part-F (a). 110 Black Bitumen Acid/ Alkali resistant paint coating two coats after cleaning & preparation of surface on the external surface of filters structure ( Valves Side) only with item no Part-F (a). 111 Repairing / replacement, cleaning of filter air/ water nozzles & other internals, including any necessary repair for the completion of work etc. including epoxy painting one coat of primer, two coats of epoxy paint after cleaning & preparation of surface on the internal fitting of metallic part of filter only with item no Part-F (a). 112 Transportation of Chemicals & Lubricants & other materials 113 Loading & unloading, transportation & stacking of chemicals /lubricant from central stores to various site store or inter stores. 114 Solid /liquid chemicals 115 Liquid chemicals 116 Loading, unloading, transportation & stacking of light chemicals, glass lab wares and other misc. material from central store to site store or inter stores. 117 Shifting of chemicals from WTP site stores to express laboratory / Coal Lab / CPP. 118 Work of Brian Treatment 119 Help in Brine treatment of anion bed resin of DM water Stream 120 Help in Brine treatment of mixed bed anion resin of DM water Stream
