(NHK World) The operator of the crippled Fukushima Daiichi nuclear power plant has released the results of its latest probe of the site.
A remote-controlled inspection of the Unit 2 reactor containment vessel last month detected a maximum of 8 sieverts per hour of radiation.
Experts say exposure to such radiation for about an hour would be fatal.
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Officials from Tokyo Electric Power Company, or TEPCO, released the results on Thursday.
They said the radiation reading was taken near what appeared to be fuel debris, the term used to describe a mixture of molten fuel and broken interior parts.