Tender For maintenance of water supply system - operation of 10mld pressure filter plant including supply of chemicals to treat raw water at cuelim, cansaulim, goa. (retender 2nd call) - operation of 10mld pressure filter plant to carryout day to day activities of treatment of raw water, with suitable man power for attending and operation of valves , suction pump, blower pump, back washing of filter bed , dosing pumps, agitating pumps, chlorine and alum dosing pumps, etc. chemical mixing with water, in chemical dosing & treating to get potable water as per who norms. keeping of all the records in respect of raw water and treated water quantity and quality aspect. recording flow meter reading , etc. complete. the plant operating man power/staff should be arranged round the clock in shift as per the directions of engineer -incharge., supply at store/site of work including transportation loading & unloading etc of alumina ferric containing 16% of al2o3 content as per is 299/2012 grade -iv packed in hdpe bags of uniform weight suitable for water treatment plant., supply at store/site of work including , transportation , loading & unloading,freight insurance etc., of sodium hypochlorite containing 6% to 8% of chlorine concentration or as required, suitable for water treatment plant, filled in hdpe can of uniform weight, including re-transporting empty hdpe cans from departmental store/site to refilling plant etc., complete.as directed by engineer in charge.