Water Supply And Sanitation Department Tender

Making electric Logging of borehole with electronic well logger including cost of equipment at site etc.complete in all respect

Supplying, lowering of MS Pipe as per IS:4270-2001 including MS sockets having dimensions as per IS code duly welded with MS electrode to have extra strength to lower the pipe into tubewell bore.

200mm nominal diameter (weight 33.6 kg per metre) 6.4mm thickness

Supplying, Fixing & lowering of Stainless Steel Cage type wire wound screen as per IS:8110-2000 or latest ISI marked Duly welded with suitable grade S.S welding electrode.to lower the strainer into tubewell respects.

200mm Steel Strainer (slot size 0.75mm) 6.30 mm thickness

Supplying, lowering & fixing of M.S Special socket to connect S.S Strainer to M.S Pipe duly welded with suitable grade welding electrode complete in all respect.

200mm internal diameter

Supplying, Fixing & lowering of Stainless Steel Socket as per IS:8110-2000 or latest ISI marked Duly welded with suitable grade S.S welding electrode.to lower the strainer into tubewell bore complete in all Respect.

200mm internal diameter

Supplying & Fixing of bail plug of M.S pipe complete with inverted U-hook attched to the bottom plug complete in all respect.

200mm internal diameter (weight 33.6 kg per metre) 6.40 mm thickness

Supplying and fixing well cap having thread to fix on housing pipe. Complete in all respects.

200mm internal diameter

Supplying & fixing of M.S Clamp of size 150mm X 12mm made out of MS Flat 1.52m long, suitable to fit Housing pipe including the cost Nut & Bolts of Suitable size complete in all respect.

Supplying at site Wooden Box of suitable size with Lid & locking arrangment for preserving strata sample collected from the bore.

Supplying at site of gravel of 1/16" to 1/8" sizes including pouring and packing in the annular space between the pipes assembly and the bore.The gravel should be free from, dust,dirt, or the vegetable manner as per IS 4097/1967 with latest amendments .(to be paid as per actual length of pipe)

Supplying & fixing mild steel centering guides made out of 32mm x 6mm thick M.S. bar complete in all respects.

Testing of water sample for Heavy metal from approved laboratory (Toxic material such as Arsenic, lead, mercury, pesticide & uranium etc.)

Development and Stabilizing of the tubewell with air compressor of required capacity as directed by the engineer-in- charge including cost of tools, appliances & consumable to the satisfaction of Engineer-in-charge.

Capacity of Air compressor 300 cfm at 250 PSI

Development and Stabilizing of the tubewell with submersible pump of required capacity as directed by the engineer-in- charge including cost of tools, appliances & consumable to the satisfaction of Engineer-in-charge.

Supplying at site Tibba sand etc. including pouring and packing in the annular space between the pipes assembly and the bore above clay seal complete in all respect.

Providing & Fixing Sanitery Seal (As per IS:2800-2019)

Provision for Sterilisation of tubewell with sodium hypochorlide/chlorination of well as per IS code 2800: 2019 complete job. The well shall be disinfected or sterilized as per IS code 2800:2019 or latest, after the development by pump and before the final test. All wells regardless of the use should be sterilized on completion to prevent or retard the growth of corrosion or incrustation fostering organisms. This should be done by introducing chlorine into the water in the well and immediate aquifer surrounding the well .The volume of water in the screen and casing should be estimated and sufficient chlorine added to yield for water with chlorination of 1000 ppm. The solution should be poured into the well and thoroughly mixed in the well by surging with pump. The solution should remain in the well for at leaset 6 hours during which it should be surged at about 2 h interval. After expiration of contact time , the well should be pumped initially back into the well for abour 30 minute and late to waste until there is little of no odour or taste of chlorine in the discharged water . IT has been found that using hypochlorite is of 10% concentration, the requirement of hypochlorite is 10 litre for every cubic meter of water in the well to produce.

Providing & Fixing Clay seal in graval pack minimum 3 Mtr. (As per IS: 2800-2019)

PUMPING MAIN

Providing, Laying, fixing & jointing of PVC pipes as per ISI-4985 (ISI marked with prior approval of Engineer-in-charge) along the Trenches and laying the same in Trenches to correct alignment and gradients, cutting, jointing and testing complete as per specifications including excavation & back filling as per analysis A 14 complete in all respects.

110mm o/d PVC Pipe of 10kg/Sqm2

Pumping Machinery

Providing, installing, testing and commissioning of 1 no. (10 BHP) Electrically driven pumping set of reputed make, capable of deleviring 230 lpm against a head of 81 mt. Complete in all respects

Providing and Fixing Submersible Cable with copper conductor PVC insulated of 4.00 mm2 size as per IS 694-1990 reaffirmed 2000 complete in all respects . (50+20 = 70 x 2 = 140 Mtr.)

Providing installing, testing and commissioning of 1 no. control panel with closed transition star delta with enclosure consisting of electrical appliances such as contactor, furses, MCCB's over load relays, isolator switches wiring and connnections. Complete in all respect .

Open & Refitting 100mm dia o/d Delivery Main including cost of Nut, Bolt, Rubber Jain etc. complete in all respect

Construction of Gravel Pit outside the Pump Chamber. (0.90m Dia.) as per standard design & drawings of public health department

Providing & fixing Single air valve ISI Marked as per IS-14845 including jointing , cost of nut bolts & rubber insertion all carriages complete.

C.I Single air valve screwed (Size 40mm)