bids are invited for repair and overhauling service - re-development of borewell; borewell; yes; service provider premises work:-re-development of borewell no-4(bana) at bana enclave 1 m&l for lifting and lowering of submersible pumpset 40hp capacity and of size 80/100mm bore of dia with flanged column pipe(each length of column pipe not more than 3m) maximum depth of submersible pump r more than 150m by opening the column pipe after removing old burnt/rusted nut, bolts, washers including replacement of rubber gaskets and nut bolts and washers etc.complete all as specified and directed. 2 development of borewell of any capacity/size, not more than 160m deep at the pressure not less than 7kg/sqcm by diesel engine driven air compressor of capacity 450 cfm with and including air pipe and connected items to achieve the minimum yield of three litres per second of tubewell, complete all as specified and directed. 3 m&l for stage wise back washing by sealing the borewell of any capacity and including in order to clear al the slots/removing all clogging with careful monitoring that strainer of borewell burst complete all as specified and directed. m&l for borewell of any capacity with capillary action process/test by including upward flow of water by cohension & adhesion caused by air pressure moderate to seewer release complete all as specified and directed. m&l for borewell of any capacity with instrument and procedure to test/record draw down pressure of borewell in order assess the maximum discharge of borewell as on previous record, complete all as specified and directed. total quantity :