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  • Aktennotiz zu Kernanlagen mit geringem Gefährdungspotenzial
    News, Posts

    Nuclear installations with low hazard potential

    The Paul Scherrer Institute plans to start a research project. The intention is to test a molten salt reactor. If this nuclear installation has a low hazard potential, no general licence will be required. ENSI specifies the requirements that must be met for a nuclear installation with low hazard potential.

    Nuclear Facilities, PSI Nuclear Facilities, Radiation Protection
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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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  • News, Posts

    The International Nuclear Safety Policy Advisors Group INSPAG continues to grow

    At its fourth meeting in May 2026 in Schaffhausen, the International Nuclear Safety Policy Advisors Group (INSPAG) welcomed three new members: Italy, South Africa and the United States of America. This brings the total number of members in the network of officials responsible for international affairs to sixteen.

    ENSI, Multilateral Cooperation
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  • News, Posts

    Federal Council approves ENSI Board’s 2025 activity and business report

    The ENSI Board considers ENSI’s oversight of Swiss nuclear installations to be responsible, effective and of high quality.

    Annual reports, Documents, Dokumente, ENSI, ENSI as regulatory body, ENSI Board, Jahresberichte, The ENSI Board
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  • Allgemein, News, Posts

    25th Austria–Switzerland bilateral meeting: discussion on deep geological disposal, radiation protection and current issues related to nuclear safety

    On 27 and 28 May 2026, the Austrian and Swiss delegations held their annual bilateral meeting, during which they exchanged information on various topics, including the progress of the Sectoral Plan for Deep Geological Repositories and radiological monitoring.

    Bilateral Cooperation
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  • Strahlenschutzbericht 2025
    News, Posts

    Effective radiation protection in Swiss nuclear installations confirmed once again

    ENSI’s Radiation Protection Report 2025 shows that all Swiss nuclear installations remained well within the legal requirements for the release of radioactive substances into the environment and the radiation exposure of personnel. ENSI verified this during the year under review through inspections, measurements and checks.

    Abgaben radioaktiver Stoffe, Annual reports, Documents, Dokumente, Emergency Preparedness, Emissions, Jahresberichte, MADUK, Measured Value about Swiss nuclear power plants, Radiation Protection, Radioactivity
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  • Cover of the document Stellungnahme des ENSI zur Kostenstudie
    News, Posts

    The 2021 cost study reflects the state of the art and makes pragmatic assumptions

    The basic technical information contained in the 2021 cost study is suitable to calculate expected costs for the decommissioning of nuclear installations in Switzerland and for disposing of radioactive waste. This was the conclusion reached by the Swiss Federal Nuclear Safety Inspectorate (ENSI) based on its technical review of the cost studies carried out the…

    Advisory opinions, Documents, Dokumente, ENSI
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