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.
This document has been revised on 23 October 2019:
Chapter 10: Editorial change
Assessment of the Safety Case for the Reactor Pressure Vessel of the Beznau Unit 1 Nuclear Power Plant
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 […]