Swiss federal authorities

  • Fire Protection in Nuclear Facilities: Switzerland submits action plan

    Switzerland has submitted its national action plan for the second Topical Peer Review (TPR II) on fire protection in nuclear facilities to the European Nuclear Safety Regulators Group (ENSREG) by the deadline. The action plan addresses and follows up on both the areas identified for improvement and those where performance is already good.

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  • Aktennotiz zu Kernanlagen mit geringem Gefährdungspotenzial
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    Nuclear installations with low hazard potential

    The Paul Scherrer Institute plans to start a research project. The intention is to test a molten salt reactor. If this nuclear installation has a low hazard potential, no general licence will be required. ENSI specifies the requirements that must be met for a nuclear installation with low hazard potential.

  • Exterior view of the FLEX building
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    Change in Leadership of the Nuclear Power Plants Division at ENSI

    Dr. Annette Ramezanian is stepping down from her position at the Swiss Federal Nuclear Safety Inspectorate ENSI and will leave ENSI on October 30, 2026.

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    Commission franco-suisse 2026: cross-border cooperation continues in the interests of nuclear safety

    At the 35th plenary meeting of the Commission franco-suisse , held on 24 and 25 June 2026 in Spiez, in the canton of Bern, the French and Swiss delegations discussed recent developments in nuclear safety and set out the priorities for bilateral cooperation for the coming year.

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    2025 Oversight Report: Compliance with approved operating conditions

    The Swiss nuclear installations complied with the legal requirements for their operation. There were no impermissible releases of radioactive substances into the environment. This is the conclusion reached by ENSI for the 2025 oversight year.