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  • News, Posts

    ENSI and the Brazilian Nuclear Regulatory Authority ANSN agree on enhanced bilateral cooperation

    ENSI and the Brazilian nuclear regulatory authority ANSN decide to intensify their exchange of information and experience. During a two-day visit on 21 and 22 September 2026, both sides signed a Memorandum of Understanding.

    Bilateral Cooperation, ENSI
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  • Allgemein, Posts

    IAEA General Conference 2026: focus on the rapid expansion of nuclear energy and regulatory change

    ENSI was part of the Swiss delegation at the IAEA General Conference. Together with other regulatory authorities, ENSI advocated for the maintenance of high safety standards. This is all the more important in a context characterised by the rapid global growth in the use of nuclear energy.

    ENSI, Multilateral Cooperation
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  • News, Posts

    Fire Protection in Nuclear Facilities: Switzerland submits action plan

    Switzerland has submitted its national action plan for the second Topical Peer Review (TPR II) on fire protection in nuclear facilities to the European Nuclear Safety Regulators Group (ENSREG) by the deadline. The action plan addresses and follows up on both the areas identified for improvement and those where performance is already good.

    ENSI as regulatory body, Multilateral Cooperation, Topical Peer Review Fire Protection
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  • Organisation

    ENSI’s organisation is governed by the Swiss Federal Nuclear Safety Inspectorate Act (ENSIG).

    Documents, ENSI, ENSI as an employer, ENSI as regulatory body, Organisation, Organogram, Other documents
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  • Patrick Tschudin, new Chief of Staff of ENSI's Directorate Division

    Patrick Tschudin

    Patrick Tschudin has been Director of Staff of the Directorate Division since 1 August 2026.

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  • Dr. Jens Karl Bender

    Dr. Jens Karl Bender

    Pending the appointment of a permanent successor to Annette Ramezanian, Jens Karl Bender is serving as acting head of the Nuclear Power Plants Division.

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  • Exterior view of the FLEX building
    News, Posts

    Change in Leadership of the Nuclear Power Plants Division at ENSI

    Dr. Annette Ramezanian is stepping down from her position at the Swiss Federal Nuclear Safety Inspectorate ENSI and will leave ENSI on October 30, 2026.

    ENSI, ENSI as regulatory body, ENSI Executive Board, Organisation
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  • News, Posts

    Commission franco-suisse 2026: cross-border cooperation continues in the interests of nuclear safety

    At the 35th plenary meeting of the Commission franco-suisse , held on 24 and 25 June 2026 in Spiez, in the canton of Bern, the French and Swiss delegations discussed recent developments in nuclear safety and set out the priorities for bilateral cooperation for the coming year.

    Bilateral Cooperation, ENSI
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  • News, Posts

    2025 Oversight Report: Compliance with approved operating conditions

    The Swiss nuclear installations complied with the legal requirements for their operation. There were no impermissible releases of radioactive substances into the environment. This is the conclusion reached by ENSI for the 2025 oversight year.

    Annual reports, Documents, Dokumente, ENSI, Jahresberichte
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