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  • Country Specific Safety Culture Forum (CSSCF) Switzerland
    News, Posts

    Typical Swiss characteristics and their influence on safety and oversight culture

    Professionalism, precision, personal responsibility: such typical Swiss characteristics support a good safety culture. Other typical characteristics, such as a focus on consensus and complacency, on the other hand, could have a negative influence, writes the NEA/OECD in its recently published report on the Country-Specific Safety Culture Forum Switzerland held at the end of 2024.

    ENSI, Nuclear Safety and Security, Safety Culture
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  • Bild des Saals vom CSSCF im November 2024
    Allgemein, News, Posts

    Oversight authority and operators of Swiss nuclear facilities continue to develop safety culture

    The Country-Specific Safety Culture Forum Switzerland took place in Bern on 19 and 20 November 2024. Representatives from various institutions discussed Switzerland’s national culture and analysed its influence on the safety and oversight culture of nuclear facilities. The aim is to continuously improve safety and security. The results will be summarised in a report and…

    Safety Culture
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  • Safety Culture

    ENSI oversees the safety culture of the Swiss nuclear installations. It defines the concept of safety culture for the purposes of its oversight as follows: Safety culture includes values shared by the members of the operator’s organisation, world views, verbal and non-verbal behaviour, and characteristics of the man-made physical environment. The safety culture includes those…

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  • Barrier Principle

    The aim of the barrier principle is to contain sources of radiation within nuclear installations at multiple levels. Structured like the layers of an onion, independent barriers ensure that the risk arising from radiation sources is minimised for both people and the environment. Within Swiss nuclear power plants, the barrier principle encompasses a sequence of…

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  • Protection objectives

    To protect people and the environment from ionising radiation released from nuclear installations and nuclear materials, the following four safety objectives must be complied with: Each safety objective is based on several partial safety objectives and safety objective functions. This sub-division is not regulated in a uniform manner at the international level and to a…

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  • Integrated Oversight

    Under nuclear energy legislation, the responsibility for nuclear safety lies with the operator of a nuclear installation. ENSI checks whether the operator fulfils this responsibility. It orders all necessary and reasonable measures aimed at preserving nuclear safety. ENSI’s targets mean that its regulatory activities are aimed at ensuring the nuclear installations are safe. To achieve…

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  • Nuclear Safety and Security

    ENSI oversees and monitors the operation of the nuclear installations in Switzerland. By analysing the reports of the operators, and through inspections and checks, ENSI determines whether the operators are complying with their legal responsibility. It orders all necessary and reasonable measures aimed at preserving nuclear safety and security. In addition, ENSI monitors releases of…

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  • Background articles, Posts

    Series of articles on barriers 6/6: The containment holds radioactive substances in the reactor building

    The reactor pressure vessel is enclosed by the containment as the third barrier. This consists of a steel primary containment and a concrete secondary containment.

    Barrier Principle, Defense in depth, ENSI, Nuclear Power Plants, Nuclear Safety and Security, Radiation Protection, Security
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  • Background articles, Posts

    Series of articles on barriers 5/6: The water circuit (primary circuit part 2 of 2)

    With its pipelines, shut-off valves and other components, the cooling circuit, together with the reactor pressure vessel, is the second barrier for trapping radioactive substances.

    Barrier Principle, Defense in depth, ENSI, Nuclear Power Plants, Nuclear Safety and Security, Radiation Protection, Security
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