Webdec 8, 2023 · hisashi ouchi was exposed to around 17 sieverts (sv) of radiation during the tokaimura nuclear accident, according to masashi kanamori of the japan atomic. Webon september 30, 1999, hisashi ouchi was exposed to 17 sieverts of radiaiton following a criticality accident in ibaraki prefecture. Websep 11, 2024 · this article delves into the real pictures of hisashi ouchi, a victim of the tokaimura nuclear disaster, and explores the events that led to his untimely demise.