Swiss nuclear facilities meet safety requirements
Nuclear facilities in Switzerland were operated in accordance with legal safety requirements in 2022. This is the conclusion reached by the Swiss Federal Nuclear Safety Inspectorate ENSI in its first annual review.

In the 2022 operating year, there were no incidents at nuclear power plants that endangered the safety of people or the environment, according to a report by the Swiss Federal Nuclear Safety Inspectorate ENSI. "The releases of radioactive substances to the environment from the nuclear facilities were also well below the limits in 2022," Rosa Sardella, head of the Radiation Protection Division, sums up.
According to ENSI, no unauthorized releases of radioactive materials from Swiss nuclear facilities were registered in the year under review.
An initial provisional overview of the number of reportable incidents relevant to nuclear safety includes 30 reports. The reportable incidents are distributed among the nuclear facilities as follows:
- 1 incident related to Beznau NPP 1 and 2,
- 5 incidents related to the Beznau 1 NPP,
- 5 incidents related to the Beznau 2 NPP,
- 6 incidents related to the Gösgen NPP,
- 6 incidents related to the Leibstadt NPP,
- 4 incidents related to the Mühleberg NPP (in decommissioning),
- 2 incidents related to PSI's nuclear facilities,
- 1 incident concerned the CTA.
In the supervisory year 2022, a reactor fast shutdown occurred: On October 7, 2022, the Beznau 2 NPP reactor was automatically shut down due to a technical malfunction in the turbine area.
In its annual supervisory report, ENSI will report in detail on reportable events and findings at nuclear facilities in the second quarter of 2023.
Source: ENSI