PISA, Pressure Vessel Integrity and Safety Analysis: in connection with the long-term operation of the Swiss nuclear power plants, it must be proven that the integrity of the reactor pressure vessel (RPV) continues to be guaranteed during normal operation and also in case of operating faults and postulated incidents. The PISA project was launched in […]
Nine months after the disaster at the Fukushima nuclear power plant, Japan is working to contain radiation exposure in the region of the accident. The challenges confronting the country in this endeavour are shown by the new ENSI report on the radiological effects of the accident on 11 March 2011. ENSI already deduced some “Lessons learned for Swiss radiation protection” at the end of October.
The analysis of the accidents at Fukushima confirms that Swiss nuclear plants are safe. However, the Swiss Federal Nuclear Safety Inspectorate (ENSI) has identified a variety of findings (Lessons Learned) from Fukushima which should now be utilised to continue optimising the safety of Switzerland’s nuclear power plants. All the measures that need to be implemented on the basis of these findings should be in place by 2015.
Inadequate technical design against tsunamis was indisputably a key factor in the accident at the Fukushima Dai-ichi nuclear plants on 11 March 2011. In order to understand the scope and complexity of the event, an interdisciplinary analysis team was formed at ENSI. Its members include (for example) experts in the fields of people and organisation, […]
During the two-week IRRS mission, the IAEA experts will investigate how ENSI performs its supervisory duties. To ensure that this scrutiny of ENSI is conducted in an orderly and systematic manner, the IAEA has developed a list containing about 2000 questions. The mission’s objective is to investigate the extent to which ENSI applies the safety […]
Immediately after the first live images of the accident in the Fukushima Dai-ichi nuclear power plant were broadcast all over the world on 11 March 2011, the Swiss Federal Nuclear Safety Inspectorate (ENSI) convened a group of internal experts comprising engineers, geophysicists, nuclear physicists and psychologists.
The Swiss Federal Nuclear Safety Inspectorate (ENSI) intends to continue improving the safety of Switzerland’s nuclear power plants. After its analysis of the events at Fukushima, ENSI therefore defined follow-up measures for the current year relating to eleven key topics.
The dispersion calculation can be used by the responsible emergency organisations (in particular ENSI and the National Emergency Operations Centre, NEOC) to predict the direction in which a radioactive cloud will move after its release from a nuclear power plant.
At the press conference held in Brugg this morning, the Swiss Federal Nuclear Safety Inspectorate ENSI published the results for Switzerland’s participation in the EU Stress test. The EU Stress test has for purpose to analyse the security situation of all european nuclear power plants in regard of the lessions learned of Fukushima. Learn more […]
