Notice for Drilling and Commissioning of Two New Tubewell at Center of Excellence, Bassi, Jaipur

Construction of Tube well from ground level & up to 100 mtr. depth to accommodate housing and assembly pipe of following sizes in all type of alluvium strata unconsolidated formation such as pebbles, boulders etc. by percussion/rotary drilling method as per IS: 2800 Part 1:1991 and IS:2800 Part II:1979(both amended up to date) and technical specifications, with gravel as per IS:4097-1967 and it's packing as per IS:2800(Part I & II) 1979 as amended up to date(the work includes the cost of gravel & it's primary packing and packing during development, lowering of housing & strainer assembly pipes with supply and wrapping of coir-rope, wherever necessary for arresting fine sand particles and development work, but excluding the cost of housing and strainer pipe assembly). The work would be completed after obtaining sand free water.

Nominal bore 200 mm dia.

Construction of Tube well from ground level & up to 100 mtr. depth to accommodate housing and assembly pipe of following sizes in all type of alluvium strata unconsolidated formation such as pebbles, boulders etc. by percussion/rotary drilling method as per IS: 2800 Part 1:1991 and IS:2800 Part II:1979(both amended up to date) and technical specifications, with gravel as per IS:4097-1967 and it's packing as per IS:2800(Part I & II) 1979 as amended up to date(the work includes the cost of gravel & it's primary packing and packing during development, lowering of housing & strainer assembly pipes with supply and wrapping of coir-rope, wherever necessary for arresting fine sand particles and development work, but excluding the cost of housing and strainer pipe assembly). The work would be completed after obtaining sand free water.

Nominal bore 200 mm dia.

Add 15% extra on above item (Item No 2.01) for drilling depth beyond 100 mtr and up to 200 mtr from ground level, rate shall be applicable for only extra depth beyond 100 mtr and up to 200 mtr.

Supplying & Packing P-gravel suitable for slot size/mesh size as suggested in IS 2800 (Part-1) 1991 or as per amended up to date

Development of tube well having depth up to 250 mtr as per IS : 11189-1985 and IS : 2800 (Part – 1)- 1991 (both amended up to date) using suitable methods to give sand free water for required yield of the gravel packed tube well.

Supply of ERW M.S. black casing pipe ISI marked (IS : 4270/2001) or amended up to date of following sizes.(200 mm dia NB (Thickness of pipe 5.4 mm & mass of tube 28.46 kg/m)

Labour charge for making slots on blank pipe made of ERW MS black pipe ISI marked of following sizes, the slotting should be as per IS:8110-1985. (200 mm dia nominal bore of 5.4 mm thickness)

Providing & laying ISI marked GI Pipe light duty ( “A” class) as per IS: 1239 for casing pipe for submersible cable external work 40 mm dia complete in all respect.

Supply & Installation of 3 phase ISI marked submersible motor pump set of three star or better rating of BEE and as per IS: 8034-2018 (pump) and IS 9283-2013 (motor) or as amended up to date of approved make of following duty condition with required accessories including making connection suitable for tube well. The job includes lowering of motor pump, installation of complete fitting & accessories, jointing of electrical cables up to switch board, testing of submersible pump set and interconnection up to water mains, complete in all respect. Only one pump shall be purchased based on the discharge of water)

Up to 5.5 KW (7.5 HP) & head above 120 mtr.

7.5 KW (10 HP) & head above 120 mtr.

9.3 KW (12.5 HP) & head above 120 mtr.

Supply and Fixing of electric control feeder panel comprising of suitable rating MCCB, fully automatic star-delta, over load relay, ampere meter with CTs, volt meter, phase preventer suitable starting capacitors, phase indicators, lighting arrangement etc complete suitable for three phase pump set. The panel should have space for energy meter (supplied by DISCOM). All these equipment shall be housed by panel box made out from 18 gauge M.S. Sheet with powder coating. Panel should be minimum size 900x600x450 mm with stand (made of angle iron of size 35x35x5mm) duly bolted/screwed with enclosure box having 4 legs, each leg’s length 18” and double door including in built locking system. The legs should be embedded in M-15 cement concrete plat form. The size of CC platform should be equal of bigger than the base size of panel having height of at least 200 mm from ground level. The panel should have opening of suitable size in front of space for energy meter with glass for meter reading. The operation of panel should be suitable for on 440 Volt AC Supply.

Above 5 HP and up to 10 HP

Above 10 HP and up to 15 HP

Supply & Fixing of ISI marked three core PVC flat submersible cable as per IS:694:1990 or amended up to date and conductor as per class 5 of IS 8130:1980 including making connection (Similarly Size of Cable will depend upon the Capacity of Pump)

3 core 4.0 Sq. mm

3 core 6.0 Sq. mm

Supply & fixing XLPE insulated/P.V.C. sheathed cable of 1.1 KV grade with aluminum conductor Armored of IS:7098-I/1554-1 approved make in ground as per IS:1255 including excavation of 30cmx75cm size trench 25 cm thick under layer of sand, sand second class bricks covering, refilling earth, compaction of earth, making necessary connection, testing etc. as required of size. (16.0 Sq. mm, 4 core)

Plate Earthing as per IS:3043 with G.I. Earth plate of size 600 mm x 600 mm x 6.0 mm by embodying 3 to 4 mtr. below the ground level with 20 mm dia. G.I. ‘B’ class watering Pipe including all accessories like nut, bolts, reducer, nipple, wire meshed funnel, and C.C. finished chamber covered with hinged type with locking arrangement C.I. Cover, C.I. Frame of size 300 mm x 300 mm complete with alternate layers of salt and coke/charcoal, testing of each resistance as required.

Supply & Fixing M S clamp set of 50x6 mm flat iron with nuts and bolts etc for holding the riser pipe assembly of submersible pump set.

Supply & Fixing tube well cover of MS sheet 8mm thick at top & 5mm thick 100mm wide shroud around the edge so as to form a cap on the top end of casing pipe with GI Nipple 45cm long & two GI flanges at both ends in 80mm sizes passing through a hole in the centre o MS sheet. A 25 mm socket with end plug shall also be welded over top plate. A GI Nipple having outside thread of size 1/2" (for installation pressure gauge) shall be provided & welded with 80mm GI Nipple near top plate nipple shall be provided with end plug.(200mm dia)

Providing & Lowering in tube well ISI marked GI Pipe medium duty (“B” class), steel tube as per IS:1239 or amended up to date and zinc coating as per IS 4736, threaded and double flanged (welded) on both ends and two number 25x3mm MS flat welded on both ends between pipe & flange, rubber washer & nut bolts etc. complete in all respect.(50 mm dia)

Providing & Fixing pump safety cage as per specification or as directed by Engineer in charge.

Testing verticality of tube well by plumbing system and yield test and draw down test by pumping system as per IS : 2800 (Part II) 1979 or as per amended up to date.

Providing & Fixing of double flanged, CI body, ISI marked NRV of approved make of following sizes 65 mm dia

Supplying & Installing 100 mm diameter sealed diaphragm bourdon type. pressure gauge of range 0 to 10 kg. including all jointing material as per specification with safety cover.

Providing, lowering, laying and jointing in trenches, standard lengths HDPE ISI marked Pipes as per IS-4984: 1995 (amended upto date) with necessary jointing material like mechanical connectors, i.e. thread/ insert joint/ quick release coupler joint/ compression fitting joint or flanged joint and specials jointing pipe by electro fusion welding method, including all taxes , transportation and freight charges, inspection charges, loading/ unloading charges, stacking of pipes, including cost of labour and material, specials (Tee, bend etc.), satisfactory hydraulic testing, disinfection, commissioning etc. complete as per technical specifications and direction of Engineer-in- charge of following class and diameter. (excluding earth work) . Note : Providing and fixing of all requisite specials as per drawing, design and layout are inclusive in RM measurement of the item and shall not be paid separately. • Supply may be in coil or straight length in 6 M/12 M. • HDPE PE-80 PN-6 • 75 mm dia

Earth work in excavation by mechanical means (Hydraulic Excavator )/ manual means in trenches of required width and gradient for laying and jointing of pipe line including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5 Mtr. including taking out the excavated soil, and then returning the soil as required in layers not exceeding 20cm in depth including consolidating each deposited layer by ramming, watering etc. and disposal of surplus excavated soil as directed within a lead of 50 Mtr. including required all safety provisions etc.: All kinds of soil