Posts

Pierre Steiner will step down from the ENSI Board at the end of 2012 after five years of service. Mr Steiner, who is 69, cites his age as the main reason for his decision. The ENSI Board regrets his departure and wishes to thank Pierre Steiner for his work and his great dedication.

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A core shroud is installed inside the pressure vessel in every reactor. This shroud is cylindrical in shape and is made of thick steel plate; it is not under pressure, and it does not perform a barrier function in order to contain radioactivity. ENSI assesses the integrity of core shrouds. The core shroud is open […]

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The experts of the European Nuclear Safety Regulators Group (ENSREG) have joined others in awarding good marks to Switzerland’s nuclear power plants. In their assessment of Switzerland’s National Report for the EU Stress Test, the EU experts conclude that Swiss nuclear power plants meet the international safety requirements in all areas, and Switzerland is even […]

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The International Mont Terri Rock Laboratory is situated near the small town of St-Ursanne in the canton of Jura. At the Rock Laboratory, a total of 22 partners from Switzerland, Belgium, Germany, France, Japan, Canada, Spain and the US carry out research into the properties of Opalinus clay, which is a potential host rock for […]

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IAEA

Experts from the International Atomic Energy Agency (IAEA) recommend that the position of the Swiss Federal Nuclear Safety Inspectorate (ENSI) should be strengthened. Specifically, it should be possible for final decisions to be taken by ENSI rather than by the Federal Department of Environment, Transport, Energy and Communications (DETEC). In addition, committees should submit their reports directly to ENSI.

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In 2008, general licence applications were submitted for three new nuclear power plants in Switzerland: the Mühleberg replacement nuclear power plant, the Beznau 1 & 2 replacement nuclear power plants, and a new construction project at Niederamt in the canton of Solothurn. For the purposes of the general licences, ENSI began by examining whether the […]

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HRA, Human Reliability Analysis: the HRA project examines the reliability of human actions, taking account of various boundary conditions. The state of the art is the determination of failure probabilities for actions that are required during an incident, but are not performed. On the other hand, there is no efficient method for the systematic identification […]

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People, organisation and safety culture have a major influence on the safety of a nuclear plant. The research projects supported by ENSI in this area deal with the influence of human actions in incident situations, as well as requirements profiles for staff at nuclear power plants. The following projects in the field of people, organisation […]

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The objective of the international Mont Terri Rock Laboratory Research Project is to study the geological, hydrogeological, geochemical and geomechanical properties of Opalinus clay. These properties are critically important for the assessment of the safety and technical feasibility of a deep geological repository for radioactive waste in this type of rock. In 2009, ENSI’s research […]

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