Water Journal : Water Journal May 2011
CEA Australia Wins Multi-Million Tender in New Caledonia CEA Australia has won a tender for the refurbishment of a 2.5km long and 1.1m in diameter steel pipeline at the Neaoua Hydro Electric Power Station in New Caledonia. The water is drawn from the dam and passes through a 2km-long concrete tunnel and the 2.5km steel pipe. The pipeline transfers water from the dam to the hydro-generating units and is the drinking water supply for the local villages. The pipeline has been in service since 1982 and is currently coated with a Coal Tar Epoxy system. "Inspections over the last five years have revealed that the existing coating is breaking down and areas of the coating are blistering and delaminating," says Mr Peter Hatchard, State Manager, CEA Australia. CEA Australia has been appointed to refurbish the pipeline, to ensure a reliable supply of water to the turbines, without the prospect of corrosion causing holes in the pipeline. The scope of work includes removing the existing coating and replacing with a coating system in excess of 25 years' service life. Challenges of the project include a drop of 470m in one section of the pipeline, and two areas which are only accessible by helicopter. The job requires CEA Australia to design and provide a custom-made machine just to access and repair the pipelines. The work must be carried out with minimal disruption to the local area and the environment, and the quality of water supply to the local village, which is normally supplied through the pipeline, needs to be maintained throughout the project duration of 12 weeks. Due to the power generation requirements there is also a limited time scale to carry out the work. For more information, please visit: www.ceaaustralia.com.au Phone: +61 7 3718 8300 Email: email@example.com www.ludowici.com.au Water Control Solutions Engineered Excellence • Penstocks • Stopgates • Wedge Gates • Knifegate Valves • Flap Gates • Shear Gates • Stop Logs • Tilting Weir Gates • Radial Gates • Bulk Head Gates • Mud Valves • Telescopic Bellmouths • Ground Water Relief Valves • Installation, Maintenance & Site Services • Operator Training • Stockist of Rotork Actuators & Gearboxes DUCTS Ludowici Watergates, providing water control solutions to the resources, infrastructure, agricultural and environmental sectors The 2.5km pipeline at the Neaoua Hydro Electric Power Station in New Caledonia.
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