Swiss federal authorities

Documents

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  • Documents

    ENSI Report on Fukushima II: Analysis – ENSI-AN-8000

    Some initial and provisional explanations as to why the design defects came about and why the accident progressed in such a catastrophic manner are presented by the Swiss Federal Nuclear Safety Inspectorate (ENSI) in its reports which examines the circumstances before, during and after the accident. In order to understand the scope and complexity of…

  • Documents

    ENSI Report on Fukushima I: Event sequences – ENSI-AN-7999

    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. A state of emergency was declared for Fukushima Dai-ichi…

  • Research and Experience Report 2011 – ENSI-AN-7871

    Developments in the technical and legal basis of nuclear oversight: This Research and Experience Report describes and rates the findings of the regulatory research into safety, specific instructive events from nuclear facilities abroad, news regarding the international cooperation as well as current changes and developments in underlying surveillance principles. While chapters 1 to 5 target an…

  • 2011 Oversight Report – ENSI-AN-7870

    The central message of the 2011 Oversight Report of ENSI, the Swiss Federal Nuclear Safety Inspectorate is both clear and brief: There were no incidents in Swiss nuclear facilities during 2011 that could have compromised human safety. In recent years, such a rational statement had, for many, become routine. However, in 2011 that was no…

  • Report by the IDA NOMEX Interdepartmental Working Group

    Following the events in Japan during March 2011, IDA NOMEX (the Interdepartmental Working Group to Review Emergency Preparedness Measures in case of Extreme Events in Switzerland) was convened to review emergency preparedness measures in Switzerland on behalf of the Federal Council. This report records the results of the work undertaken by IDA NOMEX, arranged according…

  • Integrated Regulatory Review Service (IRRS) Mission to Switzerland

  • ENSI’s Assessment of the General Licence Applications from EKKB, EKKM and KKN

    The site characteristics in respect of hazards from earthquakes, flooding, industrial plants and transport routes, as well as other hazards, were examined in connection with the general licence applications from Ersatz Kernkraftwerk Beznau AG (EKKB AG), Ersatz Kernkraftwerk Mühleberg AG (EKKM AG) and Kernkraftwerk Niederamt AG (KKN AG).

  • Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management

  • Probabilistic Safety Analysis (PSA): Quality and Scope

    ENSI-A05/e The guideline ENSI-A05 defines the quality and scope requirements regarding the plantspecific level 1 and level 2 Probabilistic Safety Analysis (PSA) for both internal and external events and covering all operating modes of the nuclear power plants. In  addition, this guideline establishes the PSA requirements for other nuclear installations. The quality and scope requirements…