Swiss federal authorities

ENSI

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  • News, Posts

    IAEA General Conference 2024: «ENSI is committed to strengthening global nuclear safety and security»

    ENSI participated in the 68th General Conference of the International Atomic Energy Agency IAEA in Vienna from 16 to 20 September 2024. This year, more than 150 member states gathered under the motto «Sustainability and Safety for a Better Future» to discuss the current challenges and future prospects of nuclear energy.

  • News, Posts

    Radioactive Waste and Spent Fuel: ENSI submits the Eighth National Report to the IAEA

    ENSI has submitted the eighth Swiss National Report to the Joint Convention. In March 2025, the contracting parties will evaluate the national reports at the Eighth International Review Meeting. In the report, ENSI provides information on the current situation regarding the handling of radioactive waste and spent nuclear fuel elements, the planned deep geological repository…

  • Legal Basis

    Text mit Links (bestehender Text von aktueller Webseite; https://ensi.admin.ch/de/themen/rechtliche-grundlagen/

  • News, Posts

    Development of human resources and long-term skills retention in the nuclear sector represent international challenges

    Competition in the labour market and a shortage of skilled workers are a challenge also in the field of nuclear regulation. Regulatory authorities discussed possible solutions at the International Conference on Nuclear Knowledge Management and Human Resources Development (IAEA).

  • News, Posts

    Switzerland and Spain intensify exchange of information on nuclear safety and radiation protection

    ENSI and the Spanish nuclear safety authority CSN have signed a memorandum of understanding to increase the exchange of nuclear regulation experience and information between Switzerland and Spain.

  • News, Posts

    2023 Oversight Report: The safety status of the nuclear power plants is good

    ENSI verified the status of the Swiss nuclear power plants by 327 inspections. In 2023, the year under review, 22 reportable nuclear-safety-relevant incidents were recorded at the nuclear power plants. ENSI provides detailed information in the oversight report published today.

  • 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…

  • 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…

  • Organisation

    ENSI, the Swiss Federal Nuclear Safety Inspectorate is the independent regulatory body with responsibility for the nuclear safety and security of Swiss nuclear installations. ENSI’s organisation is governed by the ENSI Act (ENSIA). ENSI’s executive bodies comprise: The ENSI Board is ENSI’s independent strategic and internal regulatory body. The members of the ENSI Board are elected…