“It seems to me a basic mistake,” TEPCO spokesperson Kenichi Takahara said of the pipe setup problem.
Robot attempt to get a sample of the melted fuel at Japan's damaged nuclear reactor is suspended
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The leak may have been caused by valves left open while workers flushed the machine with filtered water - a process intended to reduce radiation levels before the maintenance work, Takahara said.
Fukushima nuclear plant leaked radioactive water, but none escaped the facility
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