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Hisashi Ouchi endured an estimated 17 sieverts. ☢️
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Science Gone WrongSep 05, 2026

Hisashi Ouchi endured an estimated 17 sieverts. ☢️

Hisashi Ouchi endured an estimated 17 sieverts. ☢️ . . . The technician was caught in a criticality accident at Japan's JCO Tokaimura plant on September 30, 1999. A dose near 4 to 5 sieverts can kill half of exposed people without treatment. Doctors sustained Ouchi for 83 days, but his chromosomes had been catastrophically damaged.

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Source

NHK, 2008, 'A Slow Death: 83 Days of Radiation Sickness'

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