Public Health Engineering Department Tender

Drilling of 125 mm diameter tube well by air rotary drilling rig unit suitable for lowering of MS casing of 125mm diameter in suitably drilled bore hole as per specifications laid down in IS 2800 (Part-I ) with up to date amendments. The job is to be done in all kinds of soils, boulder, rocks, collapsible strata, saturated soils, artisan conditions by ODEX/DTH attachments and exploration of ground water by tapping sufficient aquifer zones. The job includes the cost of shifting of drilling accessories, tools, bits, casing shoe, consumables like fuel, lubricants, skilled and unskilled labours and other unforeseen items. Development of tube well with backwash method with air compressor of minimum capacity 1000 CFM (300 PSI air delivery system) with suitable arrangements till well is thoroughly developed in all respects as per the directions of site engineer.

Providing/ Fitting of MS 125mm dia pipe & subsquent lowering of casing assembly & its weldiong after every 10ft, upto the drilled /desired depth. The casing is to be sloted as per the site requirement & as directed by site Engineer. The specification of the tube well shall be as under : as per IS 4270:2001.

Supply, Installation, Testing and commissioning of India Mark II hand pump assembly comprising of cylinder, head, handle assembly, front cover, handle axle, washers, nuts/bolts.