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| 1 | Towards cost of Geophysical investigation survey charges. |
| 2 | Drilling of Borewells anywhere in Tamilnadu including transportation from one place to another with in Tamilnadu in alluvial soil sedimentary strata of clay and sand stone shale pebbles boulders etc.By first taking a pilot bore of 140 mm/150mm dia and then enlarging to required dia direct or reverse rotary mud circulation method using rotary rigs fuel, labour and drilling bentonite and water required for drilling at site including construction of mud pit. Up to 60m depth |
| 3 | From 60m to 90m depth |
| 4 | Reaming140/150mm dia pilot bore to 300mm dia bore as directed by the TWAD Board Officer.Upto 60 m depth ending below ground level |
| 5 | From 60m depth and up to 90m depth ending below ground level |
| 6 | Supply and delivery of unplasticised ribbed screen PVC casing pipe of the 200mm dia with screwed and socket end and centering guide for every 15m length of pipes as per IS / 12818 / 92 and as amended from time to time to suit the borewell upto 60m depth (C.M) Casing medium with ISI marking including, loading, unloading, freight, stacking and transit insurance charges etc, complete. |
| 7 | Supply and delivery of unplasticised ribbed screen PVC casing pipe of the 200mm dia with screwed and socket end and centering guide for every 15m length of pipes as per IS / 12818 / 92 and as amended from time to time to suit the borewell upto 60m depth (R.S) Ribbed Screen Pipe with ISI marking including, loading, unloading, freight, stacking and transit insurance charges etc, complete. |
| 8 | Supply and delivery of 200mm dia(8”) PVC end cap including cost and conveyance etc., complete |
| 9 | Labor charges for inserting the P.V.C. casing pipes assembly with slots (or) without slots in the drilled holes including joining the pipes etc., complete,supply and packing the annular space with pebbles of size and quality as approved by the Municipal Engineer excluding cost of casing pipe etc., complete200mm dia PVC casing pipe |
| 10 | Charges for developing the bore wells with Air Compressor 600cfm (Minimum 8 hours) including transportation labor and fuel charges forCompressor as directed by the Departmental Officer and conducting yield test by “V” notch method. |
| 11 | Supply and delivery of THREE PHASE SUBMERSIBLE PUMPSET SUITABLE FOR 100MM DIA BOREWELL AS PER IS 8034/2002 WITHOUT PANEL BOARD Supply and delivery of clear water vertical wet type submersible pump suitable for 100mm dia borewell conforming to IS 8034/2002 as amended thereafter and BEE 3 Star Rated capable of discharging noted LPM against head of water column due to all causes. The pump shall be with stainless steel shaft and dynamically balanced bronze or Cast SS impeller, brass screws and CI FG 200 grade pump bowl/diffuser with ISI mark. The pump shall be directly coupled to a continuos rated two pole suitable wet type vertical squirrel cage induction motor as per IS 9283 /1995 and as amended there after, suitable for operation in AC three phase 415 V+/- 10 %, 50 HZ +/- 5 % (350Lpm x 75 m head) |
| 12 | Supply and delivery of Star-Delta starter confirming to IS 13947, IEC60947-1 and as amended thereafter with suitable KW rating for operation in AC/ Three Phase/50HZ (+/- 5%) and 415V (+/- 10%) including 3 pole magnetic contactor with under voltage release - 3 nos., CT operated Ammeter (65 mm dia) with suppressed scale, Voltmeter (65mm dia), Voltmeter selector switch, Miniature circuit breaker, Thermal Overload relay, Air Break contactors suitable for next Standard higher KW rating, Single phasing preventor, dry running preventor and On/Off Push button switches, wiring with 1 sq.mm/4 sq. mm copper pvc insulated cable, powder coated vermin proof box, including the capacitor (the cost of capacitor is to be taken separately). |
| 13 | Supply and Delivery of 2.5 Sqmm PVC insulatedand Sheathed 3 Core flat type copper cable confirming to IS 694/1990 Including all charges with excise duty and handling charges etc |
| 14 | Towards Labour Charges for the errection of Submersible pump set in bore well including fixing and jointing submersible cable with proper clamps up to the starter to riser pipes to therequired depth valves erection clamps, pressuregauge up to the exterior of panel board consisting of TPICN switches starter ,Volt meter, Ammeter, three pilot (indicating) Lamps capacitor single Phasing preventor, water level guard and laying and jointing the cables and twin earthing as per IE rules etc., Complete and testing the pump set and trail run for 10 days10 HP |
| 15 | Supply and delivery of 90mm diaHDPE PIPES - PE 100AS PER IS 4984/1995 PN 12.5with excise dutyincluding cost & conveyance of all materials to site and all labour charges etc., complete |
