Construction of Production Tube Wells within the premises of W.S.S AIIMS Awantipora (4 Nos).

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PART "A" Drilling/ boring of exploratory test bore well at mentioned site for construction of production tube wells. The job shall be inclusive of all logistic support in terms of men, machinery and stores at site. . The charges on account of loading/ unloading, shifting of men & machinery shall be arranged by the firm. The strata sampling is to be carried out along with drilling and the samples collected in the transparent plastic boxes duly labeled. The exploratory bore has to be cased simultaneously vide drilling in case of ODEX drilling or cased at the completion of drilling in open drilling. Sample collection of strata to be collected for examination. After every 10 ft. The specifications of the bore well shall be as under; i. Max depth of the bore ……. 150 M The inspection at every stage shall be carried out by departmental experts to determine the aquifer zones. The construction of Production well shall be decided after analyzing the litho-logy of the test bore. This shall be duly authenticated by the Site engineers/ drilling staff including the contracting agency as well. The decision for construction of full-fledged production Bore hole shall be then taken with proper ascertaining of quality and quantity of water. the job also includes Providing, fitting of 125 mm MS casing pipe Class of pipe …. C class conforming to IS:1239 (Part Ist ) 2004,equivalent to BS -1387/1985. Acceptable make for Pipe….. Jindal /Prakash-Surya /TATA Note: The pipe has to be provided by the firm and the rates quoted are inclusive of p/f of pipes Total no of wells: 04 nos Depth of each well shall not exceed 150 meters

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PART B (ODEX) Drilling (and lowering of MS Pipe) of a 200/250 mm (solid/ slotted) dia Bore hole with ODEX attachment in all kind of Soils, Boulders, Hard-rock, saturated Soils, the drilling includes the cost of suitable casing Shoe, all consumables, water, fuel, lubricants and other accessories complete in all respect. The job includes all cost including charges for lowering/ welding, bevelling of edges, vertical alignment etc. The material i.e. MS Casing pipes for lowering, shall be provided by the department Total no of wells: 04 nos Depth of each well shall not exceed 120 meters

a) Development of tube well with back wash method with Air Compressor of minimum capacity 1000CFM (300 PSI air delivery system) with pumping pipe of minimum 100 mm dia. and air line of minimum 65 mm dia till well is thoroughly developed as per clause 4.2 of IS 11189 code 1985 with up to date amendments if any complete in all respects as per the direction of the Engineer in charge, for a minimum period of at least 40 hours. b) Development of tube well be continuous over pumping method with the submersible pump of suitable capacity not less than double the discharge established by the compressor. free of allsediments as per IS 11189 code 1985 with up to date amendments if any, for a minimum period of at least 30 hours. the draw down and the discharge to be established by running the pump continously for 8houres in presence of the officer of the department not less than the rank of AEE. the complete well thus constructed is to be handed over to the territorial meechanical division for harnessing. complation of test for yield to ensure that the quality of water is as laid down in IS-10500; 1983. the grouting & sealing of the tube well needs to be done to ensure safe sanitary conditions as per IS-2800; 1991. An apron around the well (mix shall be M10 grade) & slopping away from it to protect the well from pollution hasto be constructed to prevent contaminated water flowing back into it. the casing pipe is to be anchored within the apron by welding ISMC-150 steel bracing with crates & sufficient welding area 2 mtr length each bracing embedded within the apron (4 bracing). the complete well thus constructed is to be handed over to the territorial mechanical division for harnessing. i. Apron Size = 2.5 mtr × 2.5 mtr. ii. Apron depth at skirt = 300 mm. iii. Apron depth at well casing = 350 mm. note: 01 job for each well

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PART "B" (GRAVEL PACKED) Artificial Gravel Packed Production Well: Construction of production well based on results of exploration data by a suitable method of drilling viz Direct circulation method / Reverse circulation method up to the desired depth as per the relevant IS codes of practice for construction and testing of tube wells / Bore wells, with time to time amendments in all kinds of soils , Boulders , Rocks , Collapsible strata , saturated soils etc with the requisite accessories required there of including Bentonite mud , foam , water Lubricants etc. The drilled bore hole is to be reamed up for open drilling and completed to the desired depth. Dia of Well …….. ≥ 500/550 mm Total no of wells: 04 nos Depth of each well shall not exceed 120 meters

Lowering/ fitting of Heavy duty 300mm/250 mm dia MS Casing slotted / strainer/SOlid pipes . The welding electrodes used for welding the casing pipes together are super bond / Esab /L&T only. The jigs and fixtures for lowering the casing pipe are provided by the firm. The job includes all cost including charges for lowering/ welding, bevelling of edges, vertical alignment etc. The material i.e. MS Casing pipes for lowering, shall be provided by the department Total no of wells: 04 nos Depth of each well shall not exceed 120 meters

The annular space between the casing pipe and the well surface has to be filled with a gravel pack to act as a filter medium. The gravel, to be used in tube well, is specified in Relevant IS Codes. (Quantity shall be subject to the actual measurements at site) Total no of wells: 04 nos Max gravel for each well shall not exceed 22 cums

The well is to be developed using compressed air from an Air Compressor of adequate capacity and pressure rating. As the water becomes clear, surging or backwashing is done to make the development more perfect. The final discharge should be free from sand. The physic-chemical analysis of water sample tested has to be as per the specified IS Codes. After completion of development the well is tested for its performance that is yield characteristics and efficiency. The water has to be disinfected after completion of test for yield to ensure that the quality of water and as laid down as per specified IS Standards. The grouting and sealing of tube well has to be done to ensure safe sanitary conditions. An apron around the well (mix of M 10 grade) and slopping away from it to protect the well from pollution to be constructed to prevent contaminated water flowing back into it. The casing pipe has to be anchored within the apron by welding ISMC 150 steel bracing with cleats and sufficient welding area 2 meters length each bracing embedded within the apron (4 bracings). The complete well thus completed handed over to the territorial Mechanical Division for harnessing. The job includes P/F of bail plug as per site requirements. Technical Specifications: Minimum Run for compressor……40 Hrs. Yield Test for water (till desired Results)….. Min 30 Hrs. i. Apron Size = 2.5 mtr × 2.5 mtr. ii. Apron depth at skirt = 300 mm. iii. Apron depth at well casing = 350 mm. Note: Total no of wells: 04 nos 01 job for each well

M/S MARSHAL TRADERS

M/S MARSHAL TRADERS

M/S JK WATER MISSION