About 7 tons of water containing radioactive substances leaked from a nuclear power plant in Japan

International Business News  –  Japan’s Kansai Electric Power Company announced on August 1 that a water leak containing radioactive substances occurred inside Unit 3 of the Mihama Nuclear Power Plant, which was out of service for maintenance, with an internal leakage of about 7 tons. The company said there was no impact on the external environment.

The Kansai Electric Power Company announced on the 1st that water accumulated on the ground in the auxiliary building of the reactor of Unit 3 of the Mihama Nuclear Power Plant, and then the staff switched related systems and the water leakage stopped. The inspection found that the water also leaked into other parts of the building, and the staff immediately recovered it and did not leak to the outside of the building. The company speculated that the leakage of water containing radioactive substances totaled about 7 tons, and the radioactive activity was about 2.2 million becquerels. The company said the cause of the leak is still under investigation, and the incident has not had an impact on the external environment.

The Mihama Nuclear Power Plant, located in Fukui Prefecture, is the first nuclear power plant built in Japan. Units 1 and 2 are in the process of being scrapped, and Unit 3 has been operating for more than 40 years, but it was allowed to restart after passing the review of the Japan Atomic Energy Regulatory Commission. It was originally scheduled to restart this month and is currently being shut down for maintenance.

After the Fukushima nuclear accident in 2011, Japan implemented new safety standards for nuclear power plants, stipulating that the general operating life of nuclear power plants is 40 years. However, the extension of the operating period may be allowed after the review and approval of the Japan Atomic Energy Regulatory Commission.