PROVN OF ADD/ALT TO THE EXISTING WATER TREATMENT PLANT AND CERTAIN ASSOCIATED WORK AT CGRA MANICKTALA UNDER GE (I) (CGN) KOLKATA

Amount

M&L for opening top cover of 5000 GPH capacity IR palnt vertical type , unloading the filter media from the pressure filter for complete overhauling and changing the unserviceable media (1”x1/2” gravels, ½”x ¼” gravels, ¼”x1/8” gravels, 10x20 mesh quartz sand & 16x32 mesh quartz sand) in Iron Filter and cleaning the PVC old strainer by concentrated hydrochloric acid for reuse, replacing damaged strainer by new one, and re-installing on existing position, repair of vessel through form work and with suitable fabrication, disposal of unsv filter media (sand,gravel,stainer etc) within 100 metere radius from the existing filter plant complete all as entire satisfaction of complete all as specified and as directed by Engr-in-Charge. Note- 1. New Filter media shall be measured in separately relevant item. Old good conditioned media to be cleaned for re-use and the quoted rate deemed inclusive of the rate. 2. Inside and outside of the vessel paint colour shade shall be fixed by GE. 3. Replacement of existing PVC strainers, Vessel manhole and hand hole gasket of existing size deemed included in the rate. 4. Testing of raw water and treated water to be carried out & test reports from independednt NABL accreditated Lab as specified in IS standard, to be submitted to the department, cost deemed inclusive of the rate. 5. The water quality post overhauling should meet all the criteria mentioned at IS 10500, 2012 (2nd Rev.). 6. Any other items/media required to meet permissible water quality deemded inclusive of the quoted rate.

Supply & Charging of 1”x1/2” gravels (approx. 0.95 CUM), ½”x ¼”(Approx. 0.90 CUM) gravels, ¼”x1/8” gravels (Approx 0.90 CUM), 10x20 mesh quartz sand & 16x32 mesh quartz sand (Approx. 1.5 CUM), Oxidising catalytic media filterg treated sand (Approx. 1.0 CUM) layer by layer as per designed layer to the pressure filters all as specified and as directed.

Supply and provision of Gauge glass arrangement with suitable thickness to withstand inside pressure all as specified and as directed. Note: Any fabrication/cutting/making good disturbed surface job, hardware, flanges, fittings deemded included in the rate.

Supply and fix S.S. piping arrangement of suitable size and with necessary accesoriesfor modification of air compressor system to Iron Filter so as to enhnace oxidation process all as specified and as directed. Note: Any fabrication/cutting/making good disturbed surface job, fittings deemded included in the rate.

Repair / maintenance of existing air compressor of 6 cfm capacity at 8 kg/cm2 working pressure coupled with 3 phase electrical motor for oxidation chamber including replacement of air / oil seal, bearing, bushing, pinion gear, repair / replacement of crank and crank shaft, piston, piston rings, inlet/otlet control valves, pressure control valve, presure gauge etc., change of lub oil (compressor oil) including testing complete all as specified and directed.

M&L, two coat of synthetic enamel painting over a coat of red oxide primer after scraping,cleaning outer surface with the help of sand paper / wire brush of the complete and after cleaning of outer surface painting with the help of spray painting for newly installed softner chamber, existing iron filter including all connecting pipe line , valve with marking of valve and arrow direction and writing capacity of filter all as per data provided by the department and cleaning the inside chamber through chemical,brush and paint by anti coorosive lead free painting etc all as specified and directed. Note: Lettering, Numbering and direction marking deemed inclusive of the quoted rate.

Design, supply, installation, testing and commissioning of MS Softner Chamber for existing capacity of water treatment plant , MS Sheet of thickness 8 mm for top and bottom cover and 8 mm for vertical portion with anti corrosive bituminus coating of inner portion and FRP Coating on outer surface after duly preparing the surface,NRF 16 m3/hrs, max RF 20 m3/hrs, min working pressure 1.0 Kg/cm2, maximum working pressure 4.0 Kg/cm2 including interconnected MS pipeline 100/80/50 mm bore heavy grade of suitable grade, butterfly valve 100/80/50 mm PN 1.6 , pressure gauges & sampling cocks with filling of filter media i, e PVC strainer, Cation exghange resin of qty 1850 lits approx , common salt for regeneration etc and Design, supply, installation and testing of Oxidation chamber for existing capacity water treatment plant with dia not less than 750 mm and height not less than 900 mm with filling of MnO2 including RCC foundation complete all as specified and as directed. Make: Ion Exchange or equivalent make approved by GE. Note- 1. Contractor shall be capable to meet water quality as per defined parameter mentioned at IS: 10500, 2012 (2nd Rev.) and submit test report after duly completion by NABL accreditated lab(sample should be collected and sealed in front of MES Rep.) 2. Cation resin, salt for regeneration and MnO2 shall be measured in separately relevant item. 3. Inside and outside of the vessel paint colour as directed by Engr-in-Charge. 4. The quoted rate also deemded inclusive of imparting training to personnel employed by department for 02 weeks. 5. Quoted rate deemed inclusive of PVC strainer. 6. Approval of drawing to be taken from the department.

Supply and loading Cation resin for new softener plant complete all as specified and as directed. Note: The cation resin must meet the technical specification as follows: - Particle size: 0.3-1.2 mm (min 95%) Ionic form : Sodium Max. Temperature: 140 degree centigrade Total exchange capacity(meq/ml) (min): 1.8 Backwash settled density (g/l) : 800-860 Moisture content (Approx %) : 50 +/- 3 Test report to be submitted to the department.

Supply only common salt for regeneration of cation resin all as specified and as directed. Note: The regeneration salt must meet the technical specification as follows: - Type: Non-iodized type Specific gravity: 2.163 Molecular Formula: NaCl Purity: 99.9% Solubility: 360 g/L @ 25 degree centigrade Note: Delivery of salt may be staggered over the contract period all as specified by Engr-in-charge.

Supply and loading of MnO2 in the exisitng Oxidation chamber plant complete all as specified and as directed. Note: MnO2 as supplied must meet the technical specification as mentioned below: - Specific gravity: 3.5-4.0 MnO2 content: 50% and above Uniform co-efficinet : < 1.60 pH Range: 6.2 - 8.5 Hardness: 5-6 Moisture: < 1% by weight. Test report to be submitted to the department.

Supply anf fix PVC 4-layer Brine tank of capcity 1000 ltr with ejector system alongwith suitable size of valve with pressure gauges including PCC base below the brine tank all as specified and as directed. Note: 1. Mixing arrangement to be provided and rate deemed inclusive of the rate. 2. Rate of PCC deemed inclusive of the quoted rate.

M&L for shifting of existing plants/machinery/panel for installation of new softener plant all as specified an as directed. Note: The quoted rate deemed inclusive of materials/equipments (oxidation chamber, LT panel, Air compressor, IR plant etc) required for shifting.

Supply and fix for 80 mm dia D.I. resilient (soft) seated gate valve with pocket less body, ss stem (AISI 410), EPDM coated di wedge 100% vaccum tight design with toroidal sealing rings & over 250 micron epoxy coating in PN16 designed to BS:5163/IS:14846 non-rising stem type with hand wheel operation complete all as specified and as directed . Make-Kirloskar/VAG/Kartar

Construction of brick masonry (full brick thick wall) valve chamber, of 1050x1050x950mm size of internal diomension, PCC work with (1:4:8) type D2 150mm thick (using 40mm grade stone aggregate) for foundation complete with 1.60mm thick MS sheet cover and frame of MS angle iron 40x40x5mm with locking arrangement and painting with one coat of red oxide primer and two coats of synthetic enamel paint all as specified shall be plastering to internal and exposed surfaces of the chamber, in CM(1:4) 15mm thick and PCC coping (1:2:4) type B-1, 50 mm thick all as specified.

Supply and lay pipe MS ERW as per IS3589 (1981) thickness 5.4 mm including fittings, 80 mm (3”) dia alongwith fittings like Tee, Elbow,flange etc complete all as specified and as directed. Note: Necessary fabrication to be done by competent technician and charges deemed inclusive of the rate. Make: Jindal/TATA/SAIL

Excavating in trenches n. exc. 1.5 m. wide and n. exc. 1.5 m. in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pire holes, etc. n. exc. 10 sqm on plan and not exc. 1.5 m. in depth and getting out in soft/loose soil complete all as specified and as directed.

Removing excavated soil not exc 50 mtr and depositing where directed at a level not exc 1.5 mtr above the starting point in soil complete all as specified and as directed.

Returning filling including spreading levelling, watering and well ramming in layers not exceeding 25 cm in soft/loose soil complete all as specified and as directed.

M&L for Cutting / drilling the existing pipe any type and any size including fabrication work, flanges, washer nut-bolts for CI/DI/GI tee, bend, tapper, flange etc all necessary items all as specified and as directed.

Supply , fix, installation and testing Altoch dosing system model ADS-PRO 153120 AP with necessary fitting arrangement to waterline. Item description: 1. Receptable for power-free-automatic water sanitiser/ conditioning treatment station with proportional dosing arrangement with following attachments:- (a) Water inlet valve (b) Overflow valve (Rubber guard included) (c) Outlet valve for standalone gravity flow (d) Outlet valve for automated flow (e) Drain valve (f) Level controller (g) Level guage (h) Detachable grouting bas with rubber buffer (j) Custom cover synchronous fixing arrangement (k) Material of construction : Non-metallic thermoplastic (l) Maximum Temperature : 45.C (m) Capacity : 100 litres (n) Shape : Cylindrical (p) Compatibility : Stequa 411 AE Refill/Prefill-Total refill 2. Custom cover for power-free automatic water sanitiser / conditioning treatment station with proportional dosing arrangement with following attachments: Refill Cavity Lids (13) In-built Level Switch & Processor ½ inch Processor Outlet & Processor Inlet connections Flexible Connecting Duct Material of construction: Non-metallic Maximum Temperature: 45°C Shape: Circular Compatibility: Stequa 411 AE Refill / Prefil - Total refill Note: Necessary cutting/fabrication work deemed included in the rate. Make: Declibac, Potter & Watts, Brio Zing.

Supply STEQUA 411 AE REFILL Item description : Chlorine tablets contained in plastic cylindrical sealed dispossable sanitiser refill for disinfecion of drinking water with arrangement for controlled release of disinfectant in water, suitable for operation through recommended dosing system. (a) Replacement indication: Visual & weight variation (b) Water contact orifice design : Sealed when dry, exposed upon immersion. (c) Operation type: Non contace, Non inhalatory (d) Cylinder Dia : 2.5 inches +/- 0.5 inches (e) Cylinder height : Minimum 10.00 inches +/- 0.5 inches ( Note: 01 Set consists of 25 Pcs) Make: Declibac, Potter & Watts, Brio Zing

ARATI TRADING CO

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KALYPSO SALES AND SERVICES

JAIN CONSTRUCTION AND ENGINEERS

KWALITY CONSTRUCTION