Swiss federal authorities

Nuclear facilities

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  • Expert report on the Supplementary Diorit Decommissioning Project of the Paul Scherrer Institute
    News, Posts

    Supplementary Diorit decommissioning project at PSI meets protection objectives

    PSI has clearly demonstrated that the supplementary decommissioning project of the Diorit nuclear installation can comply with the basic protection objectives of nuclear safety and security. This is the conclusion reached by ENSI in its expert report.

  • Expert report on the Supplementary Diorit Decommissioning Project of the Paul Scherrer Institute

    Expert Report on the Supplementary Diorit Decommissioning Project of the Paul Scherrer Institute

    The Paul Scherrer Institute (PSI) has clearly demonstrated in its documentation for the supplementary decommissioning of the Diorit nuclear installation that the basic protection objectives of nuclear safety and security can be met. This is recorded in ENSI’s expert report.

  • BALDER Project

    BALDER, is a German acronym derived from the name of a research project the English translation of which is “Provision of design and licensing documents for the first MS reactor”. This is a collaboration between the Paul Scherrer Institute (PSI) and the Danish company, Copenhagen Atomics at a the site in Villigen.

  • Statement on the 2022 Periodic Safety Review (PSR) of the Leibstadt Nuclear Power Plant
    News, Posts

    Leibstadt Nuclear Power Plant: ENSI calls for improvements for long-term operation

    Leibstadt Nuclear Power Plant was operated with the necessary care during the review period from 1 January 2016 to 31 December 2021 and maintained a good level of safety. ENSI notes this in a statement on the 2022 Periodic Safety Review (PSR). Additionally, ENSI assesses the Leibstadt Nuclear Power Plant backfit concept for long-term operation…

  • Facilities in decommissioning

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

  • Paul Scherrer Institut im Hotlabor

    Facilities in operation

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

  • 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…

  • 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…