International technology Group ANDRITZ has been awarded a contract for an extensive overhaul of 14 vertical adjustable propeller pumps supplied by ANDRITZ in 2002. The pumps form the heart of the water supply system in Shenzhen, Guangdong Province, China, which supplies drinking water to Hong Kong.
In addition to a general overhaul of the 14 pumps, the life cycle of the shaft bearing is also to be extended by installing new bearing technology. Each pump has an impeller diameter of 1,950 millimeters and a power of 5 megawatts at the nominal head of 26.6 meters and the nominal flow rate of 15 cubic meters per second. ANDRITZ supplied a total of 16 pumps for the plant, two of which have already been successfully overhauled.