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  • Facilities in decommissioning

    The Paul Scherrer Institute PSI: Proteus, Diorit, Saphir, Experimental incineration plant (VVA)

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  • Paul Scherrer Institut im Hotlabor

    Facilities in operation

    The Paul Scherrer Institute PSI: Hot laboratory, Radioactive waste management facilities (AERA), BZL, BZL 2

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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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  • 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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  • 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…

    Earthquakes, Gösgen NPP, Gösgen Nuclear Power Plant, Nuclear Facilities, Nuclear Power Plants
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  • 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…

    Beznau Nuclear Power Plant, Nuclear Facilities
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  • Decommissioning

    The decommissioning of a nuclear installation includes all activities necessary to ensure that the installation or site can be used for other purposes, that the installation no longer constitutes a source of radiological hazard and that it is no longer subject to nuclear energy legislation. The operator of a nuclear installation first creates a decommissioning…

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  • Bild mit Dokumenten

    Periodic Safety Review (PSR) and Safety Cases

    According to the Nuclear Energy Act, the licensee of a nuclear power plant must periodically carry out a comprehensive safety check (Periodic Safety Review, PSR) and, after the fourth decade of operation, provide a safety case for long-term operation. The Nuclear Energy Ordinance specifies the content of the PSR and the safety case for long-term…

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  • Transports and Containers

    If radioactive waste is transported, it falls within ENSI’s regulatory area. The safety measures for such transports are subject to strict national and international regulations. Radioactive waste can be transported by road or rail. Special containers are used, on the one hand to protect the environment from radiation, and on the other to protect the…

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