Swiss federal authorities

Beznau nuclear power plant

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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.

  • 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…

  • News, Posts

    2023 Oversight Report: The safety status of the nuclear power plants is good

    ENSI verified the status of the Swiss nuclear power plants by 327 inspections. In 2023, the year under review, 22 reportable nuclear-safety-relevant incidents were recorded at the nuclear power plants. ENSI provides detailed information in the oversight report published today.

  • KKB Beznau
    News, Posts

    Leibstadt and Beznau nuclear power plants can withstand infrequent severe earthquakes

    Both Leibstadt and Beznau nuclear power plants have shown that, in the event of or after a very severe earthquake, they can ensure that their reactors are stable and safe. Dose values of one or 100 millisievert which have to be complied with will not be exceeded even after earthquakes that are only to be…

  • Interim Storage Facility ZWIBEZ

    Irradiated fuel elements are packed into transport and storage containers after a few years’ storage in the operational fuel pond and transferred to the Beznau interim storage facility (ZwiBez) for dry storage. ZwiBez is located on the premises of the Beznau Nuclear Power Plant. It is used for the interim storage of spent fuel and…

  • News, Posts

    Video interview: Beznau 1 Nuclear Power Plant gets the go-ahead to start up again

    Hans Wanner, Director General of ENSI: “Axpo has proved that the inclusions found in the steel of the reactor pressure vessel do not have a negative effect on the safety. ”

  • News

    Beznau 1: Aluminium oxide inclusions do not have a negative impact on reactor pressure vessel safety

    Beznau 1 NPP gets the go-ahead to start up again. Axpo has proved that the inclusions found in the steel of the reactor pressure vessel do not have a negative effect on safety. ENSI, the Swiss Federal Nuclear Safety Inspectorate, has reviewed and accepted the safety case.

  • Interviews, News, Posts

    “Extensive test program shows no evidence of a detrimental effect of the inclusions on the brittle fracture reference temperature”

    An international panel of experts supported the Swiss Federal Nuclear Safety Inspectorate ENSI in assessing Axpo’s safety case for the Beznau 1 reactor pressure vessel. In an interview, the chair of the review panel Tim Williams explains why they support the conclusion that Beznau 1 may be restarted.

  • News, Posts

    Chronology: from the findings in Belgium to the proof of safety from Beznau 1

    In the summer of 2012, findings are detected in the basic material of the reactor pressure vessel of the Belgian nuclear power plant Doel-3. As a result, nuclear power plants in Switzerland also have to carry out inspections. Since findings are also detected in the reactor pressure vessel of Beznau 1, Axpo needs to prove…