The Central Japan Electric Power Company held a press conference on the 5th to admit that in order for units 3 and 4 of the Hamaoka Nuclear Power Plant it operates to pass the review and restart, the company is suspected of manipulating relevant data and deliberately underestimating the maximum damaging force of a possible earthquake. The Hamaoka Nuclear Power Plant, located in Omaezaki City, Shizuoka Prefecture, is the only nuclear power plant under the Chubu Electric Power Company. Because the nuclear power plant is located in the predicted epicenter area of the anticipated Nankai Trough earthquake, this nuclear power plant stopped operating all units at the request of the Japanese government after the Great East Japan Earthquake on 2011/3/11. Units 1 and 2 of the Hamaoka Nuclear Power Plant have been determined to be scrapped. The Chubu Electric Power Company submitted an application to the Japan Atomic Energy Regulatory Commission between 2014 and 2015 to review whether the Hamaoka Nuclear Power Plant Units 3 and 4 meet the new regulatory standards. Passing this review is a necessary condition for restarting a nuclear power plant. After 9 years of review, the Japan Atomic Energy Regulatory Commission determined in September 2023 that the maximum vibration that the Hamaoka nuclear power plant may experience during an earthquake is 1,200 ga, which is a reasonable value. Meanwhile, the Chubu Electric Power Company held a press conference on the 5th and said that the maximum earthquake vibration assessment reported by the company to the Japan Atomic Energy Regulatory Commission in 2019 had the possibility of deliberately selecting data favorable to the company and underestimating the maximum seismic vibration that might occur. To this end, the company has set up a third party committee composed of people from outside the company to conduct a detailed investigation. According to a report by Japan's Kyodo News Agency, the incident came to light because Japan's Atomic Energy Regulatory Commission received an “external notification.” Japanese media pointed out that in Japan, an earthquake-prone country, the maximum vibration that nuclear facilities may experience during an earthquake is fundamental when verifying their safety. Just like the height of the tsunami, it is one of the most important projects for restarting nuclear power plants.

The Central Japan Electric Power Company held a press conference on the 5th to admit that in order for units 3 and 4 of the Hamaoka Nuclear Power Plant it operates to pass the review and restart, the company is suspected of manipulating relevant data and deliberately underestimating the maximum damaging force of a possible earthquake. The Hamaoka Nuclear Power Plant, located in Omaezaki City, Shizuoka Prefecture, is the only nuclear power plant under the Chubu Electric Power Company. Because the nuclear power plant is located in the predicted epicenter area of the anticipated Nankai Trough earthquake, this nuclear power plant stopped operating all units at the request of the Japanese government after the Great East Japan Earthquake on 2011/3/11. Units 1 and 2 of the Hamaoka Nuclear Power Plant have been determined to be scrapped. The Chubu Electric Power Company submitted an application to the Japan Atomic Energy Regulatory Commission between 2014 and 2015 to review whether the Hamaoka Nuclear Power Plant Units 3 and 4 meet the new regulatory standards. Passing this review is a necessary condition for restarting a nuclear power plant. After 9 years of review, the Japan Atomic Energy Regulatory Commission determined in September 2023 that the maximum vibration that the Hamaoka nuclear power plant may experience during an earthquake is 1,200 ga, which is a reasonable value. Meanwhile, the Chubu Electric Power Company held a press conference on the 5th and said that the maximum earthquake vibration assessment reported by the company to the Japan Atomic Energy Regulatory Commission in 2019 had the possibility of deliberately selecting data favorable to the company and underestimating the maximum seismic vibration that might occur. To this end, the company has set up a third party committee composed of people from outside the company to conduct a detailed investigation. According to a report by Japan's Kyodo News Agency, the incident came to light because Japan's Atomic Energy Regulatory Commission received an “external notification.” Japanese media pointed out that in Japan, an earthquake-prone country, the maximum vibration that nuclear facilities may experience during an earthquake is fundamental when verifying their safety. Just like the height of the tsunami, it is one of the most important projects for restarting nuclear power plants.