REPAIR REPLACEMENT AND REWIDING OF SUBMERSIBLE PUMP CENTRIFUGAL PUMP AND REPAIR REPLACEMENT OF MOTOR CONTROL PANEL INCLUDING SUPPLY OF CHEMICAL FOR WATER SUPPLY INSTALLATIONS AND ALLIED WORKS AT 6 WING UNDER GE AF BARRACKPORE

Amount

Dismantling of pressure filter media of 20000 gallons capacity by opening two Nos of main holes taking out the entire filter media of different grades (approximate volume 15.0 cum) from the pressure filter and removing the same not exceding 50 m and depositing where directed completed all as specified and directed.

Material and labour for scrapping cleaning and removing all scale and dirts etc from the internal surface of filtration plant and applying two coats of black bituminous paint to internal surface suitable for application in drinking purpose complete all as specified and directed.

Material and labour for washing properly the old filter media by water pressure or any suitable method including loading the washed filter media i.e. graded gravels and sand into the iron removal filter vessel 20000 GPH flow capacity of size 2400mm dia x 2400 mm height including testing of water before and after treatment of water from any goverment approved laboratory complete all as specified and directed. Note:- Contarctor shall submit water test report before realeasing any payments.

Taking out unserviciable filter media complete from filteration plant of capacity 20000 GPH (over all size of the pressure filter 2400 mm dia x 3050 mm over all height) and oxidation chamber of cap 20000 GPH (over all size of the pressure filter 1600 mm dia x 2500 mm over all height ) including depositing the same and removal of unserviciable materials to a distance not exc. 50 m complete all as specified and directed.

Taking out of PVC strainer tube and refixing after proper cleaning with muratic acid cleaning the filter holes and fixed inside pressure filter complete all as specified and directed.

Material and labour for scrapping cleaning and removing all scale and dirts etc from the internal surface of pressure filter of capacity 20000GPH (over all size of pressure filter 2400mm dia x 3050 mm overall height) and appling two coats of black bituminous paint to internal surface (suitable for application in drinking purpose) complete all as specified and directed.

Material and labour for prepation of old painted outer side surface of pressure filter of capacity 20000 Gallon and all MS pipe (200mm, 150mm and 100mm bore) including panels etc and applying one coat of synthetic enamel paint complete all as specified and directed.

Material and labour for prepation of old painted internal surface of oxidation chamber of capacity 20000 GPH of size 100mm x1200mm height and applying two coats of anti-corrosive black bituminous paint (suitable for application in drinking purpose) including thorough cleaning scrapping inside surface of chamber complete all as specified and directed.

Material and labour for prepation of old painted outer side surface of oxidation chamber of capacity 20000 GPH of size 100mm x 1200mm height and applying two coat of synthetic emamel paint over a coat of zinc chromate primer including complete removal of existing treatement outer side surface of chamber complete all as specified and directed.

Material and labour for collecting gravel from the cascade consisting of three tiers and cleaning gravels by applying hydro-chloric acid / muratic and cleaning thoroughly the floor of three tier cascade with the help of water and finally spreading the cleaned gravels and testing cascade for smooth functioning etc complete all as specified and directed.

Material and labour for filling and laying in different layers of new washed filter media of cosisting gravels of different sizes and sand in to the pressure filter for following size :-

Coarse sand suitable for filter media of 16/32 mesh inside the pressure filter up to 6 layer from bottom.

Gravels of size 1/8'' to 1/4'' for filter media.

Gravels of size 1/4'' to 1/2'' gravels for filter media.

Gravels of size 1/2'' to 3/4'' gravels for filter media.

Gravels of size 3/4'' to 1'' gravels for filter media.

Gravels of size 1'' to 1/2'' gravels for filter media. Note for item No 11.10 to 11.60:- Punned down thickness shall be measured for payments.

Supply and fix in repair PVC strainer tube 25 mm bore, 750 mm long with filter hose, wall thickness 3.25 mm, both end 25 mm long threaded and one side fitted with 25 mm dia PVC plug cap complete all as specified and directed.

Supply and lay new catalysts (MnO2 ) into the oxidation chamber complete all as specified and directed.

Material and labour for cleaning and washining properly the old catalyst (MnO2) by water pressure or any suitable method with drying including loading the media into the oxidation chamber complete all as specified and directed.

Material and labour back washing of pressure filter of cap 20000 Gallon untill sand free cleaning water is available including refixing of 2 Nos of main holes cover of pressure filter by using new gasket nut bolt etc complete all as specified and directed.

Supply and fix in repair 100mm dia water pressure gauge (1-10 Kg/ sq cm) bearing ISI marked complete all as specified and directed

Supply and fix in repair dosing Injector max pressure 10 Kg/ sq cm and max flow rate 10 Ltr / hr with complete accessories like lead, NRV, tubing, check valves complete all as specified and directed.

Disconnecting of electric cable from the panel board and taking out burnt submersible pumping set of capacity 10 HP to 25 HP by using chain pulley arrangement including dismantling of 100/150 mm dia MS/CI column pipe and including taking out the pump from the motor and opening of submersible pump for repair and replacement of unserviciable parts including re-fixing after repair and testing and commissioning complete all as specified and directed. Note : (i) The Quoted rate shall be included for transporation of pumping set from pump house to workshop for repair and return to pump house after repair. (ii) Spare parts shall be measured and paid seperately under respective items.

Supply only head of existing size.

Supply only gun metal bowl bush of existing size.

Supply only CI impeller of existing size.

Supply only impeller bush of existing size.

Supply only discharge case bush of existing size.

Supply only oil seal of existing size.

Supply only shaft sleeve of existing size.

Supply only shaft nut of existing size.

Supply only sand guard of existing size.

Supply and fix in repair stuffing box bearing of pump as per existing size complete all as specified and directed.

Supply and fix in repair stainless steel pump shaft coupling as per existing size complete all as specified and directed.

Supply and fix in repair stainless steel pump shaft of pump as per existing size complete all as specified and directed.

Material and labour for rewinding of submersible motor with super enameled copper wire including removing burnt winding cleaning of slots separation of rotor and starter making insulation to all joint and replacement of the following un serviciable parts of motor and testing and commissioning complete all as specified and directed. Note: Spare parts shall be measured and paid seperately under respective items.

Supply only bearing bush upper of existing size.

Supply only bearing bush lower of existing size.

Supply only balancing ring of existing size.

Supply only jointing kit of existing size.

Supply only oil sealof existing size.

Supply only gun metal rotor housing bush of existing size.

Supply and fix in repair stuffing box shaft with stud holes of motor as per existing size complete all as specified and directed

Supply and fix in repair stainless steel pump shaft coupling of motor as per existing size complete all as specified and directed.

Supply and fix in repair open type CI impeller as per existing size complete all as specified and directed.

Material and labour for lifting and lowering of the submersible pump set by using the chain pulley arrangement with fixing of column pipe of any size , including nut, bolts, washers, and rubber gasket and tightening of submersible cable with pipe and connected of submersible cable from existing panel board complete all as specified and directed.

Supply and fix in repair direct-on-line starters in steel sheet enclosure type MKI for motor rating 7.5 HP, AC-3 Duty, 415V, 50Hz suitable for three phase supply complete all as specified and directed.

Material and labour for repair, servicing, and overhauling, of Air compressor and replace the unserviciable parts and refixing the Air compressor after repair complete all as specified and directed. Note: Spares parts shall be measured and paid separately under respective items.

Supply only 15mm dia CI sluice valve.

Supply only bearings of existing size.

Supply only backup ring of existing size.

Supply only pressure Breaker for Radial ring of existing size.

Supply only tangent ring of existing size.

Supply only gasket of existing size.

Supply and fix 3 core flat copper cable, PVC insulated, PVC sheathed for submersible pump set 1100 volt, 16 sqmm size including taking down the old unserviciable existing copper cable complete all as specified and directed.

Supply and fix in repair fully automatic star delta starter of 30 HP, 415 V, 50/60 Hz, MU-G30 for submersible motor including making connection and testing complete all as specified and directed.

Material and labour for repair and maint of star delta starter of any capacity after disconnecting of incoming / outgoing connection, checking the serviceability of all components i.e existing contactors, over load relay, timer, single phase preventer, indicator lights, replacement of burnt out PVC insulated copper wire, copper thimble, re-connect the same after thoroughly cleaning and testing complete all as specified and directed. NOTE : Spare parts shall be measured and paid separately under respective items.

Supply only contactor of capacity 40 Amp, 3 Pole, 415 Volt, AC rating 3, Type MNX 40 including auxiliary contact block NO & NC.

Supply only thermal overload relay of range 24-40A.

Supply only star delta timer adjustable type from 3 to 120 sec.

Supply only single phase preventer, SPPR type SDz5, 380V (for MU-G30/40/50/75).

Material and labour for repair, servicing, and overhauling of Altoc dozing pump of capacity 10 kg/sqcm and replace the unserviceable parts and refixing the pump complete all as specified and directed. NOTE : Spare parts shall be measured and paid separately under respective items.

Supply only NRV (injection check valve) of existing size.

Supply only NRV (injection check valve) spring of existing size.

Supply only diaphragm (teflon faced) of existing size.

Supply only solenoid coil with body of existing size.

Supply only pulsar circuit of existing size.

Supply only ring seal of existing size.

Supply only LDPE pipe of existing size.

Supply only discharge/suction valve assembly of existing size.

Supply only foot valve assembly of existing size.

Material and labour for dismantling of pump set up of 5HP capacity for fountain from the position / base plate by disconnecting the electrical connections and GI tubing etc for repairs to impeller and re-fixing / connecting the pump after repair at work shop complete all as specified and directed. Note: spares shall be paid and measured separately under respective items.

Supply only ball bearing of existing size.

Supply only high tensile steel shaft of existing size.

Supply only cast iron pump body (outer case) of existing size.

Supply only pump MS base frame of existing size.

Supply only MS pump coupling of existing size.

Supply only rubber star coupling of existing size.

Supply only motor terminal box of existing size.

Material and labour for lifting of submersible pump set of capacity 10 to 25 HP including taking out of column pipe upto full depth of all pipes of size 80mm to 100mm flanged type and replacing unserviciable column pipes same size and type of 08 length @ 3mtr each and replacing corroded nut bolts of flanged column pipes 32 Nos and replacing rubber gasket for 08 x joints after dismanling all kind of electric and water supply connections, including cleaning of borewell upto 100 mtr or as per existing depth by using heavy compressor ( min 10-12 hrs) having pressure of 20 kg above to flush out the muddy and dirty water with adequate pressure till the achivement of smell free water cleaning of porous of wall of the borewell by using compressor air blower testing of TDS of water of desired result complete at site after lowering the pump sets and cable complete all as specified and as directed.

Supply only Bleaching powder stable of 33% chlorine complete all as specified and as directed.

Supply only Sodium Hypochloride Solution 10%-12% concentration (liquid chlorine) as per IS 11673-1992 in PVC container complete all as specified and as directed.

Supply only Crystal Alum for sedimentation to swimming pool, Iron removal plant and dozing plant complete all as specified and as directed.

Supply only Copper Sulphate for swimming pool complete all as specified and as directed.

Supply only Trichloro Isocyanuric Acid (TCCA) having 90% available chlorine -available in powder, granular and tablet (200 gm) in the form of 50 Kg drum complete all as specified and as directed. Note for item No 35.00 to 39.00 :- The contractor shall produce original purchase voucher with manufacturer's test certificate mentioning date of manufacturing, batch No, date of expiry of materials etc before releasing payment.

APOLLO TRADERS

NC BOSE AND CO

Das and Brothers

BANERJEE CONSTRUCTION

BHAUMIK CONSTRUCTION

VIVEKANANDA TRADERS

Electro Builders