Institute of Nuclear Safety System, Inc.

Institute of Nuclear Safety System, Inc. (INSS) is a Japanese research institute headquartered in Mihama-cho, Mikata-gun, Fukui, Japan. It was founded on March 25, 1992, with capital of ¥200 million, and had 59 employees as of March 2026. Its stated basic philosophy is to contribute to the further improvement of the safety and reliability of nuclear power generation and to better harmony with society and the environment, conducting research from both technical and social perspectives and offering proposals from an independent, third-party standpoint.

Institute of Nuclear Safety System, Inc. was established in March 1992. According to its official greeting, the trigger was the steam generator tube rupture accident at Kansai Electric Power's Mihama Power Station Unit 2. Based on the lessons of that accident, it was founded with two pillars: a Social System Research Institute pursuing safety and trust through human and social sciences, and a Technical System Research Institute pursuing improvement of safety technology and the safety and reliability of nuclear power generation. It has conducted research for over 30 years under the basic philosophy of contributing to the further improvement of the safety and reliability of nuclear power generation and to better harmony with society and the environment. After the Tokyo Electric Power Fukushima Daiichi accident, and amid recent moves toward green transformation (GX), the institute states it will continue high-level research in cooperation with domestic and overseas research institutions and universities, and will fulfill a cooperative role using its specialized knowledge, including proposals from an independent, third-party standpoint.

Independent, third-party research institute conducting objective research on nuclear power safety and reliability from technical and social perspectives.

1. 1原子力安全システム研究所 | .inss.co.jp
2. 2About INSS | 原子力安全システム研究所inss.co.jp