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Ensuring efficient gate operation
31 August, 2007
The successful operation and maintenance of gates was the subject of a number of informative papers presented during the Waterpower XV conference

Challenges to turbine development
12 July, 2007
The 14 Francis turbine units installed in the left power house at China's Three Gorges project were all commissioned successfully during the period June 2003 to September 2005, functioning as expected. However, all these turbines have developed a pattern of damage mainly on the guide-vanes which has never before been reported. Here S C Li, S H Liu and Y L Wu provide a brief description of damage observations, together with analysis of possible causes

Rising tide of optimism for tidal power
01 March, 2007
Tidal energy capacity in the US and Canada may account for less than 5% of the world’s potential, but 20GW is prize enough for a group of sea power pioneers investing in a renewable alternative to fossil fuels. Chris Webb finds that, regulatory matters aside, energy from the oceans is beginning to make its mark

A trip to Xiangjiaba
12 February, 2007
China is heading up the Jinsha river with a project to rival Three Gorges. Peter O'Neill tests the local waters and analyses for silt, seismics, salamanders and salubrious spas