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Precautions

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  • International Nuclear Event Scale (INES)

    To ensure that the nature and severity of an incident in a nuclear power plant could be described in the same way everywhere, the International Atomic Energy Agency (IAEA) worked with the Organisation for Economic Cooperation and Development (OECD) to develop an international scale of events for nuclear installations. Today, the INES scale is used…

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  • Emergency Preparedness Zones

    The aim of emergency preparedness is to protect the affected people and their livelihoods, to care for the population affected over a limited period of time and provide them with bare necessities, and to limit the consequences of an event. This objective requires that protective actions are planned and prepared for the population, animals and…

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  • Emergency exercises at nuclear facilities

    An annual emergency exercise, overseen by ENSI, takes place in all nuclear power plants, the Paul Scherrer Institute and in Zwilag. The nuclear installations use these exercises to optimise their own organisation, processes and the installation. ENSI also systematically assesses its own deployments and, based on this, improves the ENSI emergency response organisation. Every two…

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  • Precautions

    By way of precaution, the operators of nuclear installations have the following tasks: ENSI has the following planning and preparation tasks: Collection of the necessary spatial data to define the emergency preparedness zones. Deployment of its own stand-by emergency service and provision of its own internal emergency response organisation. Operation of a measuring network for…

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  • INES 7

    According to a guideline issued by the International Atomic Energy Agency (IAEA), an accident is classified as INES 7 if there has been a release of more than 50,000 terabecquerels of radioactivity. This value was exceeded at Fukushima. The becquerel (Bq) is the unit used to measure the activity of a radioactive material. 1 Bq…

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  • Allgemein, News

    Security and safety as parts of the overall culture for the protection of man and the environment

    Alongside safety in its narrowest sense, safety culture also includes the security of nuclear installations together with other aspects that are important for ensuring nuclear safety. This is demonstrated by the revised second edition of the Oversight Report on the safety culture in nuclear installations of the Swiss Federal Nuclear Safety Inspectorate (ENSI).

    Emergency Preparedness, Human and organisational factors, Precautions, Security
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  • Background articles, Posts

    Expertise for the worst case scenario

    «In the event of a nuclear accident we would use our knowledge to protect the population. In the worst case scenario I would prepare computer-based forecasts on the spread of the radioactive cloud from my position in the protected room of the ENSI emergency organisation. In this way we could estimate the risk to the…

    Emergency Preparedness, ENSI, Precautions
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  • Allgemein

    IDA NOMEX Review of Emergency Preparedness Measures in Switzerland

    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.

    Emergency Preparedness, IDA NOMEX, Precautions
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  • INES levels

    The International Nuclear Event Scale (INES), which comprises seven levels, is now applied throughout the world.

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