Two of the workers were hospitalised "after being exposed to radiation ranging from 170 to 180 milli-sieverts, " NISA spokesman Hideyuki Nishiyama said.
They were working in a building where the turbine is located.
An exposure of 100 milli-sieverts per year is considered the lowest level at which any increase in cancer risk is evident.(*)
Editor: Jafar M Sidik
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