REPAIR REPLACEMENT TO IRON REMOVAL PLANT SUBMERSIBLE PUMP SETS AND REWINDING OF PUMP MOTORS WITH CONNECTED WORKS INCLUDING SUPPLY OF CHEMICAL FOR WATER SUPPLY INSTALLATIONS AT KANCHRAPARA JAFARPORE AND LOS DUM DUM AND BARASAT UNDER GE AF BARRACKPORE

Amount

M&L for washing properly the old filter media by water pressure or any suitable method including loading the washed filter media into the iron removal filter vessel 20000 GPH flow capacity of size (2378mm dia x 2044 mm overall height)/ 10000 GPH ( overall size 1751mm dia x 2200 mm overall height) i.e graded gravels (size 3/4''x1/2''x1/4'', 1/4''x 1/18'' , 1/18''x1x16'' and sand of size appx 16/32 mesh) complete all as specified and directed.

Taking out unserviceable filter media complete from pressure filter and depositing the same and removal of unserviceable materials to a distance n.exc 50m. The capacity and size of pressure filter and oxidation chamber are as following. (a) Pressure filter Capacity 20000 GPH (overall size 2378mm dia x 2044 mm overall height) and oxidation chamber of capacity 10000 GPH(overall size 1598mm dia x 1667 mm overall height)

(b) Pressure filter Capacity 10000 GPH (overall size 1751mm dia x 2200 mm overall height) and oxidation chamber of capacity 10000 GPH (overall size 1019 mm dia x 1760 mm overall height)

M & L for scrapping, cleaning and removing all scales and dirts etc from the internal surfaces of pressure filter for painting and applying two coats of black bituminous paint. (suitable for application in drinking purpose) complete all as directed. The capacity and size of pressure filter and oxidation chamber are as following. (a) Pressure filter Capacity 20000 GPH (overall size 2378mm dia x 2044 mm overall height)

(b) Pressure filter Capacity 10000 GPH (overall size 1751mm dia x 2200 mm overall height)

(a) M&L for Preparation of existing painted surfaces and applying one coat of synthetic enamel paint to outside surfaces of pressure filter of capacity 20,000 gallons / 10000 glns etc complete all as specified and directed by Engineer-in-Charge.

(b) M&L for Two coats of anticorrosive black bituminous paint suitable for drinking after preparation of old surface including thorough cleaning, scrapping inside osurfaces of pressure filter of capacity 20,000 gallons / 10000 gallons etc complete all as specified and directed by Engineer-in-Charge.

M&L for Two coats of anticorrosive black bituminous paint suitable for drinking after preparation of old surface including thorough cleaning, scrapping inside of the oxidation chamber cap. 20000 GPH / 10000 GPH suitable for application in drinking purpose complete all as specified and directed.

M&L for Two coats of synthetic enamel paint over one coat zinc chromate primer after preparation of outside surface including thorough cleaning, scrapping out side of the oxidation chamber cap. 20000/10000 GPH complete all as specified and directed.

M&L for Filling and laying in different layers of new washed filter media of following sizes into the pressure filter, (size of the media - 2mm to 40 mm thickness) and treated green sand of size 16/32 for following sizes complete all as directed by Engineer-in-Charge.. (a) Coarse sand suitable for filter media treated Green sand 16/32 mesh inside the pressure filter to 6th layer from bottom incl necessary punning down.

(b) Coarse sand suitable for filter media (coarse) 16/32 mesh inside the pressure filter to 6th layer from bottom incl necessary punning down.

(c) 1/8" to 1/4" gravels for filter media. (appx 3 mm to 5 mm)

(d) 1/4" to 1/2" gravels for filter media. (appx 6 mm to 12 mm)

(e) 1/2" to 3/4" gravels for filter media. (appx 13 mm to 17 mm)

(f) 3/4" to 1" gravels for filter media. (appx 18 mm to 25 mm)

(g) 1" to 1½ " gravels for filter media. (Appx 26 mm to 40 mm )

S&F of PVC strainer tube for pressure filter as per existing shape and size complete all as specified and directed by Engineer-in-Charge.

M&L for Refixing Serviceable PVC strainer tube after proper cleaning with muriatic acid cleaning the filter holes and fixed inside pressure filter complete all as directed by Engr-in-charge.

Supplying and Loading new Manganese dioxide (MnO2) suitable for use in oxidation chamber complete all as specified and directed.

M&L 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 for 20000/10000 GPH flow complete all as directed by Engr-in-charge.

M&L for Preparation of existing painted surfaces and applying one coat of synthetic enamel paint to outside surfaces of Soda ash and Alum Dozer complete all as specified and directed by Engineer-in-Charge. Note:- ( One No of Soda ash and one no of Alum Dozer both are counted as one unit job)

S&F Male female threaded adapter suitable for Soda ash/Alum pots incl taking down old one complete all as directed by Engr-in-charge.

S&F PVC diaphragm valve suitable to fix in existing soda ash and alum pots complete all as directed by Engr-in-charge.

S&F 2.5 mtr length heavy duty PVC flexible armored pipe with jubilee clip on both ends as per existing size suitable for fixing with soda ash and alum pots complete all as directed by Engr-in-charge

M&L for Cleaning and servicing of under ground Sump by using wire brush, removing the deposited silt, debris at the bottom manually suitable for drinking water, inside the tank (area of tank approx 36 Sqm) etc complete all as specified and directed by Engineer-in-Charge.

S&F Chemical Dosing System along with FRP Tank, Agitator, Dosing Injector, Dosing Pump with complete accessories like lead, tubing, connecting ferrules, check valves etc with the following specification all as specified and directed (a) Dosing System including 100 Ltr FRP dosing tank, agitator 120 Watt , 900 RPM with all accessories.Mak-Ravi Enterprises/ Rmco/Declibac

(b) Dosing Injector Max Pressure 5.5 Kg/Cm square & Max flow rate 5 Ltr/Hr with all accessories.Mak-Ravi Enterprises/ Rmco/Declibac

( c) All Accessories including 01 No Motor, Mak-Ravi Enterprises/ Rmco/Declibac

Disconnecting the pump set of 5Hp to 10 HP and repair, rewinding with good quality varnishing motor winding to improve the insulation capacity and refixing the pump set after repair and overhauling complete. Note: Spares shall be measured and paid separately

(a) Supply only Bearing

(b) Supply only Gasket set

(c) Supply only Coupling

(d) Supply only Fan Blade

(e) Supply only Impeller CI

Repair, servicing, and overhauling, of Altoc dozing pump and replace the parts as under which is unserviceable and refixing the same all as specified and directed by Engr-in-charge. Note: Spares parts shall be measured and paid separately

(a) Spacer of suitable size

(b) Spacer spring of suitable size

(c) pump housing of suitable size

(f) Solenoid coil body of suitable size

(g) Pulsar circuit of suitable size

(h) Anti siphon valve of suitable size

(I ) Anti siphon spring of suitable size

Repair , Servicing and rewinding of Altoc dozing motor of any size with super enameled copper wire including burnt winding and replacement of the parts as under which is unserviceable and refixing the same all as specified and directed by the Engr-in-charge. Note: Spares parts shall be measured and paid separately

(a) Pump tube

(b) injection check valve

(c) Duck bill

(d) O-ring

Disconnecting of electric cable from the panel board and taking out burnt submersible pumping set of capacity 10 hp to 20 hp by using chain pulley arrangement by dismantling 150 mm dia CI column pipe. Note : The rate are included for Transporation of pumping set from one place to another place for repair and return to pump house after repair all as specified and directed by Engg-in-charge .

Taking out the pump from the motor and opening of submersible pump for repair and replacement of following u/s parts including re-fixing of all the same and testing and commissioning complete all as directed. (a ) Replacement of head.

(b ) Replacement of gun metal bowl bush.

(c) Replacement of CI impeller.

(d ) Replacement of impeller bush.

(e ) Replacement of Discharge case bush.

(f ) Replacement of oil seal .

(g ) Replacement of shaft sleeve.

(h) Replacement of shaft nut.

(i ) Replacement of sand guard.

S&F in replacement stuffing box bearing of pump as per existing complete all as specified and directed

S&F in replacement stainless steel pump shaft coupling as per existing complete all as specified and directed

S&F in replacement stainless steel pump shaft of pump as per existing complete all as specified and directed.

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 u/s parts of motor and testing and commissioning complete All as specified and directed by Enggr-in- charge. Note: Spares parts shall be measured and paid separately

(a ) Replacement of bearing bush upper.

(b ) Replacement of bearing bush lower.

(c) Replacement of balancing ring.

(d ) Replacement of jointing kit.

(e ) Replacement of oil seal .

(f) Replacement of gun metal rotor housing bush.

S&F in replacement stuffing box shaft with stud holes of motor as per existing complete all as specified and directed

S&F in replacement stainless steel pump shaft coupling of motor as per existing complete all as specified and directed.

S&F in replacement open type impeller made of CI as per existing complete all as specified and directed.

Lowering of the submersible pumping set by using the chain pulley arrangement with fixing of column pipe of size 150mm dia, including nut, bolts, washers, and rubber gasket in replacement. And tightening of submersible cable with pipe and connected of submersible cable from existing panel board. complete all as specified and directed by Engr-in-charge.

S&F in replacement Direct-on-Line Starters in Sheet-Steel Enclosure Type MKI for Motor Rating 7.5 HP , AC-3 Duty, 415V, 50Hz suitable for three phase supply. Make : L&T / Havells / Indo Asian

Repair, servicing, and overhauling, of Air compressor and replace the parts as under which is unserviceable all as specified and directed by Engr-in-charge. Note: Spares parts shall be measured and paid separately

(a) Compressor valves

(b) Bearings

(C) Backup ring

(d) Pressure Breaker for Radial ring

(e) Tangent ring

(f) Gasket

S&F in replacement for three core flat copper cable, PVC insulated, PVC sheathed for submersible pump set 1100 volt 16 sqmm size after taking down the old UNSV copper cable complete all as specified and directed.

Material and labour for galvanised steel (Gl) tubing medium grade with screwed socket joints, together with all tube fittings (such as bends, elbows, tees, short pieces, connectors, back- nuts, diminishing pieces, caps, plugs and unions, etc.) and laying in trenches, etc., also for cutting, screwing and waste and for making forged bends on piping as required. Connectors shall be inserted, where required or directed. The rates also include cutting through walls, floors, etc. and their making good for following pipe bore size. (a) 20 mm bore

(b) 25 mm bore

(c) 40 mm bore

(d) 100 mm bore

S&F in replacement CI sluice valve size 100 mm dia PN 1.6 conforming to IS-14846 flanged end complete with iron wheel head and stainless steel pindle including taking downcomplete all as specified and directed.Make : Kirloskar / Leader/Upadhyaya/Zoloto

S&F in replacement 100mm dia non return valve with necessary nuts, bolts etc. Including packing / fittings in suction line at pump house complete as directed by Engr-in-Charge. Make : Kirloskar / Leader/Upadhyaya/Zoloto

S&F in replacement 150mm dia non return valve with necessary nuts, bolts etc. Including packing / fittings in suction line at pump house complete as directed by Engr-in-Charge. Make : Kirloskar / Leader/Upadhyaya/Zoloto

Supply & replace in trenches Ductile Iron pipe centrifugally cast (Spun) with spid, class K-7 confirming to IS 8329/2000 suitable for (Push on) rubber gasket jointing with inside cement mortar lining duly ISI marked complete for 100mm dia

Supply & fixed Ductile iron fittings of Class K-12 special suitable for push on jointing as per IS 9523/2000 with inside cement mortar lining and out side zinc coating followed by bitumen coating including taking down complete for 80-150mm dia

Supply & fixed Ductile iron fittings of Class K-12 special suitable for Flange rating PN10/PN-16 jointing as per IS 9523/2000 with inside cement morter lining and oudt side zinc coating followed by bitumen coating including taking down complete for 80-150mm dia

Material and labour for rubber gasket joints for SS/DF/SF CI pipes of bore 80 mm

Material and labour for rubber gasket joints for S/DF/SF CI CI pipes of bore 100 mm

Supply and fix CI foot valve size 100 mm dia installed at suction side of the pump conforming to IS-4038 flanged end complete incl taking down old one complete all as specified and directed.

M&L for Plain Cement Concrete Type B1 1:2:4 (using 20 mm graded granite stone aggregate) in bases / pedestals for pipe lines , mud stops or chamfered on edges.

M & L for Making good surface where cutting / Excavated Road/hard standing/path by making cement concrete filling with mass concrete of 1 : 3 : 6 type C2 with 40 mm graded aggregate complete all as specified

Boring under road/ Taxi Track/PCC/Drain for laying of DI pipe up to 100 mm without disturbing top surface all as specified

Material and labour for attending break down of pipe line bursting/cracks including cleaning/removal of broken pipe pieces of various lengths through gas cutting / manual cutting as per site requirement and providing transport to work site with material and tools and inserting necessary specials such as pipes,CI Collar / mechanical Joints etc as required at site under relevent items, including testing for leakages of lead joints and necessary dewatering up to completion of the job work at site for 80mm/100mm dia CI/DI/MS Pipe complete all as specified and directed. Note 1 : The following items, shall be measured and paid separately under relevent items of BOQ. (i) Earth work. (ii) All type of specials of CI/DI/MS pipes of various suitable sizes. (iii) All type of joints like lead joint, tyton joint, flange joint, mechanical collar joint etc., (iv) All CI/DI/MS pipes of various suitable sizes. Note 2 : Rates quoted deemed to be inclusive of the following: (i) Arrangements of suitable Pump set for dewatering at the time of attending break down. (ii) Labour/Tradesman for attending break downs. (iii) Transport to shift the material and tools. (iv) Levelling/ alignment to both sides pipe for jointing. (v) Arrest/rectification of leakages if any while testing if any, immediately to restore.

Excavation in trenches n.exc. 1.5m wide and n.exc1.5m depth for foudation,trenches for laying of cables/pipe line etc. and getting out in soft/loose soil.

Removing excavated material to a distance not exc 50m and depositing where directed at a level not exc 1.5 m above the starting point.

Returning, filling in, incl. spreading, levelling, watering and well ramming in layers not exc 25cm in type of soil

Supply and replace CI specials such as bends(any type, radius and angle)tapers any type, (straight,bend,increasing,decreasing or double socket etx.) tee pieces single branch. "Y" junction, double branch,cross (all sockets or sockets and spigot) collars, caps and plugs all as specified and directed.

S&F in replacement of Gun-metal, globe or gate valves, with iron wheel head, screwed both ends of size 20 mm dia for iron pipe and fixed

S&F in replacement of Gun-metal, globe or gate valves, with iron wheel head, screwed both ends of size 25 mm dia for iron pipe and fixed

S&F in replacement of Gun-metal, globe or gate valves, with iron wheel head, screwed both ends of size 32 mm dia for iron pipe and fixed. C&R / Kirloskar / Venus / Kalpana.

S&F in replacement butterfly valve 100mm dia hand operated Make : C&R / Kirloskar / Venus / Kalpana.

S&F in replacement butterfly valve 150mm dia hand operated Make : C&R / Kirloskar / Venus / Kalpana.

S&F in replacement Pressure gauge suitable for bearing pressure upto 20 Kg / Sq cm.Make : MEI /GURU /Uday

M&L for cleaning by sparaying of weeds herbicide for kill unwanted vegetation around near E/M installation and making good all as specified and directed.

Supply only Soda Ash ( caustic soda 100% pure) for Iron removal soda dozing plant all as specified. (Make : RMCO, Reyalaseema Chemicals or equivalent)

Supply only calcium hypochloride 65% to 70% chloride content in chlorine in granular for water treatment form in factory sealed HDPE container of 45 Kg each(Make: M/s Sree Rayalaseema Hi-strength Hypo ltd/ Declibac or equivalent E-In-C approved brand) Note: Original certificate of compliance and authorization from the manufacturers including contact No & Date,batch No/manufacturer date /SI No and specific contractors Name & Address.

Supply only Crystal alum for sedimentation to Iron removal plant and dozing plant all as specified. (Make : M/s Sree Rayalaseema Hi-strength Hypo ltd , DCM,RMCO or equivalent)

Supply only Ferric alum for sedimentation for Iron removal plant, alum dozing plant all as specified.(Make : M/s Sree Rayalaseema Hi-strength Hypo ltd , DCM, RMCO or equivalent)

M&L for repair and maint of star delta starter of 10 hp to 20 hp capacity motor after disconnection of incoming/outgoing connection, checking the servicibility of all components I,e. existing contactors, overload relay, timer , single phase preventer, indicator lights, replacement of burnt out pvc insulated copper wire, copper thimble, re-connect the same after throughly clean and testing all as required and directed at site Note- spare parts shall be measured and paid sepretly under respective items of this schedule,

Replacement of contactor of capacity 40 Amp, 3 pole, 415 volt, Type MNX 40 Including auxilary contact block No &NC (Make- L&T/C&S)

Replacement of thermal overload ralay of range 24-40 Amp (Make- L&T/C&S)

Replacement of star delta timer adjustable type from 3 to 120 sec, (Make- L&T/C&S)

Replacement of single phase preventer SPPR type of existing size,(Make- L&T/C&S)

M&L for Preparation of existing painted surfaces and applying one coat of synthetic enamel paint to outside surfaces of all Mild Steel pipe (200mm, 150 mm , 100 mm and 80 mm bore), etc complete all as specified and directed by Engineer-in-Charge.

Supply, Fix and commissioning in replacement Digital type Flowcounter world water meter as per existing size ,capacity and make fixed in Iron removal plant system complete all as specified and directed by Engineer-in-Charge.

ROY CONSTRUCTION

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