Swiss federal authorities

Documents

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  • Country Review Report Switzerland_2nd Topical Peer Review_’Fire Protection’

  • Organisation

    ENSI’s organisation is governed by the Swiss Federal Nuclear Safety Inspectorate Act (ENSIG).

  • CNS Report Draft 2025

  • ENSI Erfahrungs- und Forschungsbericht 2024
    News, Posts

    ENSI Publishes its 2024 Research and Experience Report: New Findings for Long-Term Operation

    The 2024 Research and Experience Report is focused on research into earthquake risks, fire propagation in reactors and the health effects of ionising radiation. The report presents important findings for regulatory practice, especially relating to the long-term operation of nuclear power plants, and simultaneously gives an insight into ENSI’s broad-based international cooperation.

  • 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.

  • Oversight Report 2023 – ENSI-AN-11888

    For 2023, ENSI assessed the safety status of the nuclear power plants as good, an indication that the operation of Swiss nuclear installations complied with all statutory nuclear safety regulations. Emissions of radioactive material into the environment via waste water and exhaust air from nuclear installations were significantly below the allowed limits. The safety of…

  • Strategy International Activities 2024

    The continuous improvement of nuclear safety and security in Switzerland is the main concern of international cooperation. The regulatory exchange of information and experience plays an important role in this. The ENSI Board therefore updated and adopted the Strategy International Activities.

  • Service Mandate of the ENSI Board to ENSI: 2024 to 2027

    The ENSI Board periodically formulates a service mandate for ENSI. The service mandate is valid for one legislative period and is embodied in an annual service agreement.

  • The Organisation of Nuclear Installations

    ENSI-G07/e This Guideline stipulates the requirements for the organisation of nuclear installations in the operational and post-operational phase.It includes references to other ENSI Guidelines as follows: The requirements for the training and qualification of personnel at nuclear installations are stipulated in Guidelines ENSI-B10 and ENSI-B13. The requirements for the emergency response organisation at nuclear installations…