Swiss federal authorities

ENSI

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  • Aufräumarbeiten Fukushima
    Background articles

    ENSI Report on Fukushima II: Analysis (People and Organisation)

    Inadequate technical design against tsunamis was indisputably a key factor in the accident at the Fukushima Dai-ichi nuclear plants on 11 March 2011.

  • ENSI Report on Fukushima I: Event sequences (Chronology)

    Immediately after the first live images of the accident in the Fukushima Dai-ichi nuclear power plant were broadcast all over the world on 11 March 2011, the Swiss Federal Nuclear Safety Inspectorate (ENSI) convened a group of internal experts comprising engineers, geophysicists, nuclear physicists and psychologists. This interdisciplinary “Japan Team” was assigned the task of…

  • Background articles

    The 12 IRRS mission modules

    During the two-week IRRS mission, the IAEA experts will investigate how ENSI performs its supervisory duties. To ensure that this scrutiny of ENSI is conducted in an orderly and systematic manner, the IAEA has developed a list containing about 2000 questions.

  • ENSI undergoes rigorous scrutiny

    ENSI wants to keep its work in line with the highest quality standards. For this reason, the organisation has agreed to undergo a thorough investigative review by a group of experts from the International Atomic Energy Agency (IAEA) between 21 November and 2 December 2011. This is already the second time that the Swiss regulatory…

  • Background articles

    ENSI Report on Fukushima I: Event sequences (Chronology)

    Immediately after the first live images of the accident in the Fukushima Dai-ichi nuclear power plant were broadcast all over the world on 11 March 2011, the Swiss Federal Nuclear Safety Inspectorate (ENSI) convened a group of internal experts comprising engineers, geophysicists, nuclear physicists and psychologists.

  • The international IAEA team

    A total of 24 experts – most of them high-ranking representatives of national nuclear supervisory authorities – are inspecting ENSI in the period from 21 November to 2 December 2011.

  • “It’s hard work”: Inspectors on inspecting inspectors

    Just this once, the roles are reversed and it is the inspectors who are being inspected. ENSI is to undergo rigorous scrutiny by the IAEA experts during the two-week IRRS mission. But what is the procedure for an inspection of inspectors? For one whole day, ENSI’s communications department observed the work of the IAEA experts…

  • Good marks for Swiss nuclear supervision

    The Swiss Federal Nuclear Safety Inspectorate (ENSI) acts independently, it has drawn the right conclusions from the accident at Fukushima, and it obliges operators of nuclear power plants to undertake back-fitting operations on a continuous basis: praise, as well as some specific suggestions for improvements for ENSI from the experts at the International Atomic Energy…

  • Hans Wanner beim Abschluss der IRRS-Mission.

    “We shall quickly implement the recommendations from the IAEA experts.”

    Hans Wanner, Director of the Swiss Federal Nuclear Safety Inspectorate (ENSI), is satisfied to note the good marks awarded to Swiss nuclear supervision by the IRRS mission. This thorough inspection has shown that ENSI operates at a high standard on the international scale, Dr Wanner commented during this interview. Dr Wanner: ENSI was subjected to…