A reactor at Kansai Electric’s Oi nuclear plant automatically stopped operating following an alarm. The incident is currently under investigation to determine the root cause of the shutdown. Importantly, Kansai Electric reports that no leakage of radioactive substances has been detected. This shutdown raises questions about the reliability of the plant’s systems, despite assurances of safety. Authorities are monitoring the situation closely while the investigation proceeds. The company aims to restart the reactor after confirming its safety and addressing the issue that triggered the alarm. This event highlights the ongoing scrutiny of nuclear energy facilities in Japan.