Japan to shut down nuclear reactor at Ohi plant

A reactor at Japan's Ohi nuclear plant will be shut down following problems with an emergency cooling system. The move follows an emergency alarm late Friday triggered when the pressure dropped in the tank for the cooling system, Kansai Electric spokesperson Masaki Todatake said.

The reactor's closure leaves only 18 of Japan's 54 nuclear plants producing electricity, worsening power supply problems following March's earthquake and tsunami.

Source: CNN