Swiss federal authorities

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  • ENSI Erfahrungs- und Forschungsbericht 2024
    News, Posts

    ENSI Publishes its 2024 Research and Experience Report: New Findings for Long-Term Operation

    The 2024 Research and Experience Report is focused on research into earthquake risks, fire propagation in reactors and the health effects of ionising radiation. The report presents important findings for regulatory practice, especially relating to the long-term operation of nuclear power plants, and simultaneously gives an insight into ENSI’s broad-based international cooperation.

  • 8th Review Meeting of the Joint Convention - Switzerland
    News, Posts

    8th Review Meeting of the Joint Convention: Switzerland receives positive overall assessment

    From 17 to 28 March 2025, ENSI participated in the Eighth Review Meeting of the Contracting Parties to the Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management. The Swiss National Report received one « good practice », three « areas of good performance » and one…

  • Gesamtansicht des Kernkraftwerkes Leibstadt mit grüner Wiese
    News, Posts

    2024 Operating Report: Nuclear installations met safety requirements

    Over the past year, nuclear installations in Switzerland fulfilled the requirements for safe operation. This is the conclusion reached by the Swiss Federal Nuclear Safety Inspectorate (ENSI) in its initial operating report for the 2024 oversight year. Both the public and the environment were protected from radioactive substances.

  • KKW Gösgen hält Erdbeben der Störfallkategorie 3 stand
    News, Posts

    Gösgen nuclear power plant can withstand category 3 earthquakes

    The Gösgen nuclear power plant has demonstrated that it can bring its reactor to a safe and stable state in the event of or after a very severe earthquake. For earthquakes that are only expected to occur every 10,000 years, the permissible dose of 100 millisievert will not be exceeded. However, ENSI is requesting the…

  • News, Posts

    The ENSI Board learnt about nuclear safety in Finland and Sweden

    In autumn 2024, the Board of the Swiss Federal Nuclear Safety Inspectorate (ENSI) visited the Finnish Radiation and Nuclear Safety Authority (STUK) and the Swedish Radiation Safety Authority (SSM). A visit to the nuclear power plants at the Olkiluoto site in Finland was also on the programme. The main objective of the meetings with the…

  • KKW Beznau, Blocks 1 und 2
    Allgemein, News, Posts

    ENSI takes note of the decision to operate Beznau NPP up to 2033

    ENSI takes note of Axpo’s decision to operate Beznau 1 Nuclear Power Plant until 2033 and Beznau 2 Nuclear Power Plant until 2032. Beznau NPP has an open-ended operating licence, as is the case for all Swiss NPPs. Subject to safety being guaranteed, the operator is free to make a commercial decision about how long…

  • Bild des Saals vom CSSCF im November 2024
    Allgemein, News, Posts

    Oversight authority and operators of Swiss nuclear facilities continue to develop safety culture

    The Country-Specific Safety Culture Forum Switzerland took place in Bern on 19 and 20 November 2024. Representatives from various institutions discussed Switzerland’s national culture and analysed its influence on the safety and oversight culture of nuclear facilities. The aim is to continuously improve safety and security. The results will be summarised in a report and…

  • Allgemein, Posts

    Welcome to ENSI’s new website

    The Swiss Federal Nuclear Safety Inspectorate (ENSI) has revised its website. The design of the new website focuses on structuring the individual topics clearly, and also aligning it with the needs of the various interest groups. The main topics can be accessed directly via the main navigation bar. Visually, ENSI has aligned its website with…

  • News, Posts

    ENSI is to check the completeness of Nagra’s general licence documents

    Berne, 19.11.2024 – Today, Nagra submitted its application for a general licence for a deep geological repository and an encapsulation plant to the Swiss Federal Office of Energy (SFOE). The deep geological repository is to be constructed in the site area North of Lägern, while the encapsulation plant is to be built on the site…