The main aims of ENSI’s international cooperation are the global improvement of nuclear safety and security, and the strengthening of oversight in Switzerland. This is achieved through active participation in the international regulatory exchange of information and experience and through participation in international review missions.
ENSI monitors the development of international safety standards and foreign regulatory authorities, the latest state of the art of science and technology, and international operating experience. By doing so, it selectively influences the development of international regulations on nuclear safety and security. It participates in the further development of international safety standards with trend-setting requirements.
These are the most important areas of work within the framework of the international activities and cooperation of ENSI:
- the International Atomic Energy Agency IAEA,
- the OECD Nuclear Energy Agency OECD-NEA,
- the Western European Nuclear Regulators Association WENRA,
- the European Nuclear Safety Regulators Group ENSREG,
- the Heads of European Radiological Protection Competent Authorities HERCA,
- the European Association of Competent Authorities EURACA,
- the European Network on Operational Experience Feedback EU Clearinghouse,
- and the European Nuclear Security Regulators Association ENSRA.
News
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IAEA Regulators’ Conference 2026: Perspectives on a resilient regulatory culture
From 27 to 30 April 2026, ENSI participated in the Regulators’ Conference of the International Atomic Energy Agency (IAEA) in Vienna. In the panel discussion on resilient regulatory culture, ENSI Director General Marc Kenzelmann presented ENSI’s perspective.
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CNS Review Meeting 2026: positive result for Switzerland and identified challenge concerning the availability of national expertise
Switzerland received a positive overall assessment at the tenth Review Meeting of the Convention on Nuclear Safety. Alongside several areas where its performance was assessed as particularly good, one key challenge was identified concerning the long-term availability of technical expertise.
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IAEA General Conference 2025: lively exchange to promote nuclear safety
ENSI was part of the Swiss delegation at the 69th IAEA General Conference. It took the opportunity to exchange views with numerous regulatory authorities, thereby promoting the safety and security of Swiss nuclear facilities.
Background-articles
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The 12 IRRS mission modules
During the two-week IRRS mission, the IAEA experts will investigate how ENSI performs its supervisory duties. To ensure that this scrutiny of ENSI is conducted in an orderly and systematic manner, the IAEA has developed a list containing about 2000 questions.