The results are presented of long-term measurements obtained during the radon survey in the schools of the Slovak Republic.
Measurements of equilibrium equivalent radon concentrations (EER) were performed in 645 buildings.
It was found that the action level of EER was exceeded in 16 schools.
Consequently short-term radon measurements were instituted in a kindergarten in Roznava-Cucma, where the highest level of EER was measured.
The analysis of the results contains the comparison of the long-and short-term measurements, the influence of the spring and summertime, the daily radon variations and the radon source localisation.
From the results obtained the annual effective doses from radon exposure, estimated for pupils and teachers in the kindergarten, were 7 mSv and 10.5 mSv, respectively.
It is concluded that the real values of annual effective doses, estimated for pupils and teachers in schools are about 5 times lower than doses estimated from the results of integral long-term measurements due to the ventilation regime.
Mots-clés Pascal : Dosimétrie, Radon, Surveillance, Long terme, Ecole primaire, Ecole maternelle, Slovaquie, Europe, Dose rayonnement
Mots-clés Pascal anglais : Dosimetry, Radon, Surveillance, Long term, Primary school, Nursery school, Slovakia, Europe, Radiation dose
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0360758
Code Inist : 002B30A02B. Création : 12/09/1997.