Japan Atomic Energy Agency’s prototype fast breeder reactor Monju, December 2022, Tsuruga City, Fukui Prefecture
Professor Takashi Nakata, professor emeritus at Hiroshima University, has compiled an analysis showing that there is a high possibility of an active fault running within the premises of the Japan Atomic Energy Agency’s prototype fast breeder reactor Monju, and presented it at the Japan Society for Active Faults being held in Fukuoka City. It was announced on the 10th. It is said that there is a high possibility that the active fault “Shiraki-Nyu Fault”, which is said to run north-south approximately 500 meters west of the site, will branch out and reach the site.
More than 530 pieces of nuclear fuel extracted from nuclear reactors are stored at Monju. There are also plans to build a new test and research reactor on the site. Mr. Nakata said, “We should investigate the fault as soon as possible to confirm whether it is an active fault.”
There are many faults called shatter zones on the Monju site, such as directly beneath the reactor buildings, and following the TEPCO Fukushima nuclear power plant accident, an expert investigation team from the Nuclear Regulation Authority investigated the relationship between Shiraki-Nyu and the shatter zones. In 2017, it was concluded that no activity was observed in the fracture zone.
Mr. Nakata said that to the southwest of the site, there are topography that indicates that Shiraki-Nyu is extending toward Monju, such as a linear cliff that appears to have been created by the displacement of a fault and a valley that appears to have been curved by the movement of the fault. He pointed out that there is.
2023-11-10 10:12:32
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