REPAIR AND MAINTANCE OF DOSING SYSTEM AND SUPPLY CHEMICALS FOR VARIOUS INSTALLATION AT VARIOUS PH AT LICHUBARI AND MARIANI UNDER GE JORHAT.

Amount

NOTES :The bidders/contractors are advised to read tender document & all corrigendum/ amendments and General conditions of contracts before entry/quoting the rates.

Supply only Hi-strength granular chlorination chemical based with CIAS (Corrosion Inhibitor & Anti-scalant) to be ratified by E-inC’s Branch, Dry, free flowing, consistent white granules (or powder) and without hard lumps or impurities should not induce substances beyond acceptable limit as give in IS:10500:2012 in treated and disinfectant water, chlorine having minimum 55%-60% chlorine content by mass packed in 45Kgs PVC sealed container, 5-10 % moisture content, upto 4% Calcium Hydroxide, upto 15 % Sodium Chloride suitable for treatment of drinking water and swimming pool (Much more stable than chlorine gas, bleaching power and sodium hypochlorite) all as specified and directed by Engr-in-Charge. Note:- (i) IV & RV shall be maintained for every consignment of the material supplied, and the same shall be entered in MB as not to Abstract, before making payment. (ii) The contractor shall produce manufacturers "Certificate of Compliance" indicating date of manufacturer in original alongwith every consignment of supply. (iii) The Engg-in-Charge shall organise testing of random samples of chemical drawn from the various lots which shall be got tested from NTH, NIT,IIT, NABL laboratories, Govt Engineering Collage or Any Govt laboratories by the contractor under his own arrangements and the cost of both materials and labour required for sampling, testing, packing, transportation of samples to the testing places and testing charges thereof, and for subsequent identification of above chemical sampled, shall be borne by the contractor.

Supply only Poly Aluminium Chloride (PAC)inorganic soluble polymer raw water flocculants powder in 25 Kg bags conforming to the following specifications: -(a) Bulk Density/specific Gravity at 20 Degree Celcius: 0.75 + 0.10 (b) PH Value of aqueous solution (w/v): 3.5 – 5.0 (1%)(c) Chloride content (w/w): 31.0% + 2.0%(d) Sulphate content: 10 % (Max)(e) Basicity: 40.0 + 5.0(f) Mercury & Lead: Not Desirableall as specified and directed by Engr-in-Charge. Note:-The contractor shall be produce manufacturers "Certificate of Compliance" indicating date of manufacturer in original alongwith every consignment of supply.

Collection of water samples from 8 nos( raw water & treated water) water supply installations ( Pump House No. 7,8,9 & 10 ) and water treatment plant under Lichubari & Mariani Area in a special sterilized container and submitting to test laboratory for Bacteriological/Chemical analysis as IS and obtain test result from lab incl submitting to Engineer-in-Charge as directed.

Collection of water samples from 4 nos water supply installations ( Pump House No. 7,8,9 & 10 ) and water treatment plant under Lichubari & Mariani in a special sterilized container and submitting to test laboratory for Lead analysis as IS and obtain test result from lab incl submitting to Engineer-in-Charge as directed. NOTE for item no 06 & 07_: (i)Testing shall be carried out from NTC/NEIST Jorhat or any other Govt approved laboratory with prior approval of GE. by the contractor under his own arrangements and the cost of both materials and labour required for sampling, collection bottle,testing, packing, transportation of samples to the testing places and testing charges thereof, and for subsequent identification of above chemical sampled, shall be borne by the contractor. (ii)The contractor shall submit the test Certificate pump house in original along with the test sheet giving the results of each test as per relevant IS

Supply only Spiral Cap type pet sterile bottle made from BPA free material for taking samples of water for testing all as specified & directed.

Supply only following spares / components to be incorporated against chemical Dozing pumps of make RMCO/CHEMINJECT model RPQ 40 HD high pressure single head gear motor adjustable chemical dosing (metering) pump cap. 2 to 40 US GPD @ 100 PSI & capacity or any other make / capacity complete :

Pump tube

Injection check valve

Suction Line Strainer 3/8'

Suction / Discharge Tube

Check Valve / Duck Bill

Connecting Nut 3/8"

Ferrule

Supply and fix in repair PE /FRP dozing tank of capacity 100 litres, 480 mm dia and 575 mm height with lid containing port hole for pouring chlorination chemical and water including provision for mounting arrangement for motor & dosing pump, solution level indication Gauge suitable for chemical dosing plant complete all as specified and directed.

Dismantling, repairing/replacement, re-fixing and commissioning, testing of defective motor of capacity up to 1 HP, 415 Volt, 1440 RPM with gear assembly from chemical dozing system disconnecting electric connection and servicing the motor & gear assembly for proper functioning including replacement of burnt copper winding, oiling and greasing etc, and refixing back in same position complete all as specified and as directed. Note: All Spares such as NRV, Bearing, Rubber coupling will be deemed to be included in rate quoted against above item.

Supply & Fixing Safe water pre-filter capsule suitable for accommodating one unit of Prefil sealed refill for corrosion & scale inhibition as well as sediment filtration sealed of 51.0 cm. for drinking water applications, ( before PVC Tank Inlet ) with spcifications such as pressure: 7 Bar, Temperature: 35°C Max, End connections: 1½ inch, Installing location: Vertical Spindle all as specified and directed by Engr-in-Charge

Supply & Fixing Safe water pre-filter sealed refill for corrosion & scale inhibition as well as sediment filtration for Prefil capsules for drinking water applications of specifications such as height: 51 cm, must be capable of forming protective films on pipe interiors, must prevent precipitation of Calcium, Magnesium & Iron, minimise red water problem by complexation with Iron Filter porosity: 5 Microns Pressure: 1.5 Mpa Temperature: 45°C all as specified and directed by Engr-in-Charge.

Supply and Fixing Safe water pre-filter capsule suitable for accommodating one unit of Prefil corrosion & scale inhibitor sealed refill of 12.7 cm. for drinking water applications of following specifications: Flow Rate: 1,000 LPH Pressure: 1.5 Mpa Temperature: 35°C Max. End connections: ½ inch ( before Geyser / Kitchen Tap ) Installing location: Vertical Spindle Environment: Cool dry place away from direct sunlight Backwash option: manual key all as specified and directed by Engr-in-Charge.

Supply and Fixing Safe water pre-filter corrosion & scale inhibitor refills for Prefil capsules for drinking water applications of following specifications: Height: 12.7 cm Must be capable of forming protective films on pipe interiors Must prevent precipitation of Calcium, Magnesium & Iron Minimise red water problem by complexation with Iron Filter porosity: 180 Microns Flow Rate: 1,000 LPH Pressure: 1.5 Mpa Temperature: 45°C all as specified and directed by Engr-in-Charge.

Supply & fixing in repairs NRV assembly 20mm, PVC for inlet and outlet pipes complete all as specified and directed.

Material & labour for Plain Cement Conerete 1 : 3 : 6 type C2 using 40 mm graded stone agregate as in foundation/platform of pump set/pump panel & other works at different pump house complete all as specified and as directed by the Engr-in-charge.

Demolition of existing unreinforced PCC complete all as specified and as directed by the Engr-in-charge.

Supply and laying in repair for 50 mm outer diameter of 3- layer PP-R Polypropylene random copolymer) pipes, SDR 7.4 (PN16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings laid in trenches complete all as specified and as directed.

Supply and laying in repair for 32 mm outer diameter of 3- layer PP-R Polypropylene random copolymer) pipes, SDR 7.4 (PN16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings laid in trenches complete all as specified and as directed.

Supply and laying in repair for 25 mm outer diameter of 3- layer PP-R Polypropylene random copolymer) pipes, SDR 7.4 (PN16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings laid in trenches complete all as specified and as directed.

Supply and laying in repair for 32 mm gate valve for 3- layer PP-R Polypropylene random copolymer) pipes, SDR 7.4 (PN16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings complete all as specified and as directed.

Supply and laying in repair for for 50 x 40 mm brass threaded socket for 3- layer PP-R Polypropylene random copolymer) pipes, SDR 7.4 (PN16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings complete all as specified and as directed.

Supply and laying in repair for for 32x25 mm brass threaded socket for 3- layer PP-R Polypropylene random copolymer) pipes, SDR 7.4 (PN16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings complete all as specified and as directed.

Materials and Labour for galvanized steel tubing, medium grade, 15 mm bore with all fittings, laid in trenches, and including taking up old GI pipe complete all as specified and as directed.

Excavating in trenches n. exc 1.5m wide and not e. 1.5m in depth for foundation of poles, laying under ground cables, etc and getting out in soft/loose soil complete as specified and directed.

Removing excavated material not exc. 50 m and depositing where directed at a level not exc 1.5 m above the starting point in soft / loose soil complete as specified and directed.

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

Material, Labour and replacement for Rolled mild steel in beam, tee, angle, channel or flat sections including cleats Fe-290 (Gde E-165) Quality-B including one shop coat of zinc chromate primer after preparation of surface complete all as specified and as directed.

Note: Schedule of credit (SCHEDULE OF CREDIT) amount of Rs ₹ ___________ mentioned on Page No ____ shall be deducted from the total quoted amount of BOQ.

M/S D J ENTERPRISE

M/S GOPAL ROY AND CO

M/S DILIP GOSWAMI

M/S PAUL CONSTRUCTION

MS J B CONSTRUCTION AND CO

A M CHOUDHURY AND CO