Low-Level Radon Activity Concentration – a MetroRADON International Intercomparison

Petr Otahal (1) , Eliska Fialova (1) , Josef Vosahlik (1) , Hannah Wiedner (2) , Claudia Grossi (3) , Arturo Vargas (3) , Nathalie Michielsen (4) , Tuukka Turtiainen (5) , Aurelian Luca (6) , Katarzyna Wołoszczuk (7) , Thomas Beck (8)

1 National Institute for Nuclear, Chemical and Biological Protection
2 Physikalisch-Technischer Prüfdienst
3 UPC - Universitat Politècnica de Catalunya = Université polytechnique de Catalogne [Barcelona]
4 IRSN/PSE-ENV/SEREN/BERAD - Bureau d'étude et d'expertise du radon
5 STUK - Säteilyturvakeskus [Suomi] = Radiation and Nuclear Safety Authority in Finland = Autorité de sûreté nucléaire et de radioprotection [Finlande]
6 INCD GeoEcoMar - Institutul National de Cercetare-Dezvoltare pentru Geologie si Geoecologie Marina
7 CLRP - Central Laboratory for Radiological Protection
8 BfS - Bundesamt für Strahlenschutz - Federal Office for Radiation Protection

An international intercomparison of continuous monitors measuring radon activity concentration was performed to validate the traceability of the European radon calibration facilities. It was carried out by comparison of the secondary standards, used by these previous facilities, in the range from 100 Bq·m-3 to 300 Bq·m-3. Secondary standards were individually compared to a secondary reference device previously calibrated in a reference radon atmosphere traceable to a primary standard. The intercomparison was organized by the National Institute for Nuclear, Chemical, and Biological Protection (SUJCHBO) in the period from October 2019 to April 2020 within the European Metrology Program for In-novation and Research (EMPIR), JRP-Contract 16ENV10 MetroRADON. Eight European laboratories participated in this study. The results of the experiment are presented and discussed.

Domaines: Physique [physics]

Petr Otahal, Eliska Fialova, Josef Vosahlik, Hannah Wiedner, Claudia Grossi, et al.. Low-Level Radon Activity Concentration – a MetroRADON International Intercomparison. International Journal of Environmental Research and Public Health, 2022, 19 (10), pp.5810. ⟨10.3390/ijerph19105810⟩. ⟨hal-03960723⟩