Here is a possible concise summary:
The video is about the Tokaimura nuclear accident in Japan in 1999, which exposed three workers to lethal levels of radiation. It explains how the accident happened due to poor management, lack of training, and violation of safety procedures. It also describes the suffering and death of the most affected worker, Hisashi Ouchi, who was kept alive for 83 days despite his irreversible condition. It mentions the consequences of the accident for the company, the authorities, and the public. It ends with a request to like the video and watch other chilling stories.
Here are the key facts extracted from the text:
1. A technician at the Tokaimura power plant was exposed to extreme radiation levels.
2. Nuclear energy is a significant source of electricity for Japan, providing about 30% of the country's electricity.
3. The Tokai nuclear power plant was Japan's first commercial nuclear power plant, founded in 1966.
4. The plant focused on converting nuclear fuel and producing uranium rods until 1999.
5. A chemical purification procedure with three crucial steps was required to produce uranium fuel.
6. On September 30, 1999, a critical mass was reached in a precipitation tank, causing an uncontrolled nuclear fission.
7. Three operators were present during the incident and were exposed to intense gamma and neutron radiation.
8. The accident caused contamination within and outside the facility.
9. An uncontrolled chain reaction occurred, and emergency measures were taken to stop it.
10. The incident led to public distrust in Japan's nuclear energy program and highlighted operational and safety procedure failures.
Please let me know if you need more details or further assistance.