FDR/Periodcal Mtc of RWS schems undr Killa Block/ S.H- Imprvmnt of water quality by repairng 10000/5000 GPH capacity IRP of Dewan Bari Zone undr DWS SD, Killa durng 2025-26.

Lifting of filter media from package type IRP filter chamber as per specification and the directon of the Engineer-in-charge.

Providing & placing rapid gravity filter gravel having effctive size of 3mm to 25mm & uniformity co-efficient of not more than 1.70 and or less than 1.30 obtained from Barakar River, West Bengal as per specification and direction of the Engineer-in-charge.

Providing & placing rapid gravity filter sand having effctive size of 0.50 mm to 1.00 mm & uniformity co-efficient of not more than 1.70 and or less than 1.30 obtained from Barakar River, West Bengal as per specification and direction of the Engineer-in-charge.

Providing and placing of anthracite coal(3mm to 6mm) of Sp gr. 1.4 in IRP as per specification & direction of the Engineer-in-charge.

Providing, clearing & placing of MnO2 (20 mm to 40 mm) inside the Oxidation chamber including removal of existing old MnO2 from the chamber disposal within 50 m lead complete as per direction of the Engineer-in-charge.

Supplying and fitting fixing of conical type strainer ( PVC ) of approved quality as per departmental sample after demolishing existing damaged strainer as per direction of the Engineer-in-charge.

Providing and fitting fixing of 6`` Diaphragm Valve ISI quality as per departmental sample after demolishing existing damaged valve complete as per direction of the Engineer-in-charge

Providing and fixing CIDF Butterfly valve with bolts, nuts, rubber insertions etc. complete as per CPWD specification and direction of the Engineer-in-charge (the tail pieces, tappers etc if required will be paid separately). i) 150 mm dia

Providing and fixing M.S. bolts including nuts and washer complete as per standared design. i) upto 300 mm lenght

Rewinding of Horizontal motor suitable for centrifugal pumps by complete dismantling in/c providing & rewinding with super enamelled copper conductor ( as per: 13730 part-3 ) conductor & all necessary spare parts and reassembling the same including servicing of rotor & necessary trial run as per specification and direction of the Engineer-in-charge.

i) 0.5 - 1.5 HP (metering pump )

ii) 2.0 HP ( compressor )

iii) 3.0 - 5.0 HP ( air blower )

Providing and fixing C.I. sluice valves ( with cap ) complete with bolts, nuts, rubber insertions etc. ( the tail pieces if required will be paid separately ) as per CPWD specification and direction of the Engineer - in - charge. i) 150 mm Dia, A. PN-1.0

ii) 125 mm Dia, A. PN-1.0

iii) 100 mm Dia, A. PN-1.0

Providing and fitting fixing motor for air compressor of IRP after replacing the existing air compressor motor as per specification and direction of the Engineer-in-charge.

Providing and fitting fixing motor for air blower of IRP after replacing the existing air blower motor as per specification and direction of the Engineer-in-charge.

Painting with black anticorrosive bituminastic paint ( one or more coats ) of approved brand and manufacture on old work to give an even shade including preparation of surface as required complete as per direction of the direction of the Engineer-in-charge.

Removing the rust by scrapping, sand papering and preparing the surface smooth as per direction of the Engineer-in-charge.

Applying priming coat: i ) with ready mix red oxide zinc chromate primer of approved brand and manufacture on steel, galvanised iron / steel works. i) on steel work

Finishing with epoxy paint ( one or more coats ) of approved brand and manufacture at all locations prepared and applied as per manufacturer's specification on old work including preparation of surface etc. as required complete. i) on steel work

Providing & fitting fixing of Steel sheet enclosed switch fuse unit (suitable for DIN fuses) , triple pole with neutral link (TPN) , 415/500 volts, L&T/ Havell's/BCH make etc. complete as per Specification & direction of the Engineer-in-charge. i) 63 Amps

Providing and fitting fixing of Fully Automatic Star Delta type Motor starter ( 3 ph. 50 Hz, 415) in Steel Sheet Enclosures with Contractors and Timer etc. complete suitable for submersible Pump L & T, BCH, ABB make as per specification and direction of the Engineer-in-charge. i) 25HP/18.5 kw Relay range within 13-21 + 10%

Providing & fitting fixing of 6 ' x 4' x 1 " thickness Gamair Wood panel board for fitting fixing of electrical items , in/c 2 Nos MS angle post ( size 2" x 2" x 9') , nuts and bolts etc. Irrection of the same by 1:1.5:3 cement concrete custing (1' x 1' x 2') below the ground level and painting two or more coats and plastic paint as per specification and direction of the Engineer -in-charge.

Providing and fitting fixing with PVC insulated single core multistrand copper cable confirming to IS:694 interconnection with all electrical equipments of the panel boards as per direction of the Engineer-in-charge. i).16 sqmm

Providing and fitting fixing of Electrical starter of approved quality for compressor, blower and agitator as per departmental sample after demolishing the existing damaged starter as per direction of the Engineer-in-charge.

Providing & fitting fixing of 1/2" PVC pipe, ISI quality as per departmental sample after demolishing the existing damaged pipe as per direction of the Engineer-in-charge.

Providing and fitting fixing of brass Fullway valve with handle in the GI pipe line including cutting, threading etc. complete as per CPWD specification and direction of the Engineer-in-charge. i) 25 mm dia.

Providing and fixing G.I. pipes of medium class as per IS: 1239 with latest amendment complete with G.I. fittings including trenching and refilling, cutting and making good the walls etc. complete as per CPWD specification and direction of the Engineer-in-charge. A. External work - ( i ) 25 mm dia nominal bore

( ii ) 150 mm dia nominal bore

Providing and fitting fixing of MS flange ( 8mm wall thickness) by welding with G.I/MS pipe and placing in position as specification and direction of the Engineer-in-charge. i) 150 mm dia

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