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,
- the Executive Board,
- the auditors.
The ENSI Board is ENSI’s independent strategic and internal regulatory body. The members of the ENSI Board are elected by the Federal Council and report directly to it. The Federal Council also nominates the President of the ENSI Board.
As the operational management body, the Executive Board is chaired by the Director General.
The auditors are elected by the Federal Council for a period of four years. The term of office may be extended once for a further four years.
ENSI is divided into divisions and sections. The organisational regulations define the tasks, responsibilities, organisation and management of ENSI.
The Organisational Chart forms part of the organisational regulations.
News
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Welcome to the new ENSI Board website!
The redesign of the ENSI Board website focuses on the needs of the target groups. The structure of the new website has been slightly streamlined and new functions have been integrated. All ENSI Board announcements are still available under News. The News can now be displayed as a list or as tiles. Links in the footer…
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Federal Council approves ENSI Board’s 2024 activity and business report
The ENSI Board has assessed ENSI’s regulatory activities in relation to Switzerland’s nuclear installations as responsible, appropriate and of high quality.
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The ENSI Board learnt about nuclear safety in Finland and Sweden
In autumn 2024, the Board of the Swiss Federal Nuclear Safety Inspectorate (ENSI) visited the Finnish Radiation and Nuclear Safety Authority (STUK) and the Swedish Radiation Safety Authority (SSM). A visit to the nuclear power plants at the Olkiluoto site in Finland was also on the programme. The main objective of the meetings with the…
Background articles
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Ten years on from Fukushima, the ENSI Board still holds that safety has priority over political or economic interests
Where there are conflicts of interest between politics, safety and profitability, safety must always take priority. This is one of the most important lessons learnt from the Fukushima nuclear accident.
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Prevention of sabotage and theft: an overview
«The protection of nuclear installations and nuclear materials against sabotage, violent actions or theft has to be based on an in-depth defence system which involves structural, technical, organisational, personnel and administrative measures. In my section we examine the measures in effect at nuclear installations on the basis of national and international requirements. To determine the…
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Unannounced inspections
«I’m a site inspector for ENSI, responsible for the Beznau NPP. Every week I pay a control visit to the nuclear power plant without prior announcement. I’m interested in everything, including ladders that have fallen over and that you can trip over. Thanks to their training and experience, inspectors know what to look for. We…