Half-Life Histories S01 E29 Tokaimura Tragedy - History's Worst Criticality Accident

"A mini documentary series exploring nuclear weapons, technology, and disasters."

On September 30, 1999, the Tokaimura nuclear accident became the worst criticality accident in modern nuclear history. At a uranium processing facility in Japan, workers accidentally triggered a self-sustaining nuclear reaction while preparing fuel for an experimental reactor. One of the technicians, Hisashi Ouchi, received a massive radiation dose and spent 83 days in intensive medical care before his death. Over time, his story spread across the internet with misleading claims about what really happened. This [HALF-LIFE HISTORY] is the true story.