Japan

Japan

Fukushima floating project hit by earthquake and tsunami

JAPAN: The Fukushima floating offshore turbine off Japan's east coast survived its first major test following an earthquake and tsunami last month.

The 2MW Hitachi turbine prior to installation
The 2MW Hitachi turbine prior to installation

The earthquake’s epicentre occurred 328 kilometres east of Namie, Fukushima, on 25 October. It measured 7.1 on the Richter scale, triggering a minor-tsunami.

The Hitachi 2MW turbine rests on a Mitsui-built semi-submersible foundation, 20 kilometres offshore.

Shipbuilder Japan Marine United and the University of Tokyo developed the floating substation, which are both understood to have performed well during and after the quake.

A high-voltage undersea cable and a dynamic cable have been installed at the site, which follows the floating equipments' movements as well as wave and tide actions.

The second phase of this project, which is scheduled for commissioning in 2015, will see the installation of two 7MW Mitsubishi hydraulic turbines, one on a Japan Marine United floating spar and one on Mitsubishi’s own semi-submersible foundation.


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