As from 1.1.2018, the limit value of 1000 becquerels per cubic meter (Bq/m3) is replaced by a reference level of 300 Bq/m3 for the average annual concentration of radon gas in "premises where people stay regularly for several hours a day". In addition to this reference level, a threshold value of 1000 Bq/m3 is applicable for the average annual concentration of radon gas at workplaces exposed to radon. Further information can be found in the following note:
The following instructions are intended to fulfill the requirements of the Radiation Protection Ordinance and correspond to the current state of science and technology:
Documents
Legislation
Ordonnance sur la radioprotection (ORaP) du 26 avril 2017
Ordonnance du DFJP sur les instruments de mesure des rayonnements ionisants (OIMRI) du 7 décembre 2012
Last modification 16.10.2019
Contact
Federal Office of Public Health FOPH
Division of Radiological
Radiological Risk Section
Schwarzenburgstrasse 157
3003
Berne
Switzerland
Tel.
+41 58 464 68 80