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  • News, Posts

    2024 Oversight Report: Nuclear power plants complied with approved operating conditions

    ENSI assessed the safety condition of the nuclear power plants as good overall for 2024. All reportable events were of minor significance for nuclear safety. This is the conclusion reached by ENSI in its 2024 Oversight Report.

    Annual reports, Documents, ENSI
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  • News, Posts

    Long-term strategy for IAEA safety standards adopted

    The Commission on Safety Standards (CSS) of the International Atomic Energy Agency (IAEA) has unanimously adopted the “Long-term Plan”, a strategy for the long-term development of safety standards. The plan aims to keep these globally applicable standards fit for purpose and forward looking, and to maintain their effectiveness in a rapidly evolving environment. A concrete…

    ENSI, Multilateral Cooperation
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  • News, Posts

    Federal Council approves ENSI Board’s 2024 activity and business report

    The ENSI Board has assessed ENSI’s regulatory activities in relation to Switzerland’s nuclear installations as responsible, appropriate and of high quality.

    Annual reports, Documents, ENSI, The ENSI Board
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  • News, Posts

    EU Topical Peer Review on fire protection in nuclear facilities: ENSI assessments confirmed

    Switzerland participated in the EU’s Topical Peer Review on fire protection in nuclear facilities. The now published report summarizes the expertise and in-depth discussions of the other supervisory authorities. As ENSI had already explained in its national report at the end of 2023, fire protection concepts need to be updated for certain nuclear facilities.

    ENSI, Multilateral Cooperation, Topical Peer Review Fire Protection
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  • Titelblatt Strahlenschutzbericht 2024
    News, Posts

    Radiation Protection Report 2024: All Legal Limits Met

    In 2024, Swiss nuclear installations met all legal radiation protection limits according to ENSI’s annual radiation protection report. Based on a closely coordinated system of monitoring instruments, ENSI was able to verify that the regulated parties fulfilled their legal obligations to protect both personnel and the general public from radiation.

    Annual reports, Documents, Emergency Preparedness, Emissions, MADUK, Measured Value about Swiss nuclear power plants, Radiation Protection, Radioactivity
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  • News, Posts

    ENSI completes the flood risk safety analysis review

    ENSI has completed its review of the updated flood and bank erosion analyses based on the EXAR study. The results show that no safety-relevant buildings at the nuclear power plants or the Central Interim Storage Facility are endangered in the event of either a 1,000-year or 10,000-year flood. Based on conservative assumptions, the Paul Scherrer…

    Flooding, Nuclear Facilities
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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.

    Research
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  • 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…

    ENSI, Multilateral Cooperation
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  • 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.

    Beznau Nuclear Power Plant, Events, Gösgen Nuclear Power Plant, Leibstadt Nuclear Power Plant, Mühleberg Nuclear Power Plant, Nuclear Facilities, Nuclear Power Plants, PSI Nuclear Facilities, Würenlingen AG interim storage facility (ZWILAG)
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