The Swiss nuclear power plants (NPP) Beznau and Gösgen are required to perform standardized safety reviews of the base materials in their reactor pressure vessels to check for possible manufacturing flaws. Through this requirement, the Swiss Federal Nuclear Safety Inspectorate ENSI is implementing a recommendation issued by the Western European Nuclear Regulators Association (WENRA).
The Swiss Federal Nuclear Safety Inspectorate assessed the earthquake safety of the Beznau nuclear power plant in accordance with the legal requirements. The Swiss Federal Administrative Court has thus rejected an appeal lodged by 15 individuals.
Hans Wanner, Director General of ENSI: “Axpo has proved that the inclusions found in the steel of the reactor pressure vessel do not have a negative effect on the safety. “
Beznau 1 NPP gets the go-ahead to start up again. Axpo has proved that the inclusions found in the steel of the reactor pressure vessel do not have a negative effect on safety. ENSI, the Swiss Federal Nuclear Safety Inspectorate, has reviewed and accepted the safety case.
An international panel of experts supported the Swiss Federal Nuclear Safety Inspectorate ENSI in assessing Axpo’s safety case for the Beznau 1 reactor pressure vessel. In an interview, the chair of the review panel Tim Williams explains why they support the conclusion that Beznau 1 may be restarted. The IRP has been following Axpo’s safety […]
In the summer of 2012, findings are detected in the basic material of the reactor pressure vessel of the Belgian nuclear power plant Doel-3. As a result, nuclear power plants in Switzerland also have to carry out inspections. Since findings are also detected in the reactor pressure vessel of Beznau 1, Axpo needs to prove it was safe. The Swiss Federal Nuclear Safety Inspectorate ENSI accepts this proof in 2018.
The steam generators at Beznau and Gösgen do not deviate from the design requirements in terms of their carbon content. This is the result of a review of the manufacturing documents. The structural integrity of the steam generators’ individual components is ensured by a large margin.
In the summer of 2012, findings are detected in the basic material of the reactor pressure vessel of the Belgian nuclear power plant Doel-3. As a result, nuclear power plants in Switzerland also have to carry out inspections. Since findings are also detected in the reactor pressure vessel of Beznau 1, Axpo needs to prove […]
The IRP considers that the Axpo Safety Case is acceptable. This is based on the following: It has been established beyond all reasonable doubt that the flaws are laminar ‘agglomerates’ of alumina inclusions, formed during manufacture of the affected RPV shells, and which neither formed nor grew during service. It has been adequately demonstrated that […]
These rules of procedure govern the activities of the International Review Panel (IRP) on the Beznau Nuclear Power Plant unit 1 reactor pressure vessel integrity re-assessment. The re-assessment of the Beznau NPP unit 1 reactor pressure vessel’s integrity has been required from the operator based on reported findings following ultrasonic tests. The role of the […]
The three oldest Swiss nuclear power plants started operating in 1969 (Beznau-1), 1971 (Beznau-2) and 1972 (Mühleberg), respectively. This means that Beznau-1 will celebrate its 40th anniversary in 2009. Accordingly, long-term operation has been an issue in Switzerland for some years and, as long ago as 1991, the regulatory authority required all operators to have […]