Radioactivity is the property exhibited by an unstable atomic nucleus, according to which it spontaneously emits ionising radiation.
ENSI is responsible for the protection of the personnel of nuclear installations, the population and the environment against ionising radiation.
In 2024, Swiss nuclear installations met all legal radiation protection limits according to ENSI’s annual radiation protection report. Based on a closely coordinated system of monitoring instruments, ENSI was able to verify that the regulated parties fulfilled their legal obligations to protect both personnel and the general public from radiation.
ENSI has upgraded its MADUK web application. The MADUK monitoring network is used to monitor the radioactivity around nuclear power plants and the Paul Scherrer Institute (PSI).
Liquid radioactive substances from Swiss nuclear facilities that reach the Aare and Rhine rivers are well below the officially defined emission limits. This is the conclusion reached by ENSI in the Eighth Swiss Report on the Implementation of the OSPAR Recommendation on Radioactive Discharges.
