NUKLEONIKA 2010, 55(4):589-593

 


INTERCOMPARISON OF RADON CR-39 DETECTOR SYSTEMS CONDUCTED IN CLOR's CALIBRATION CHAMBER



Kalina Mamont-Cieśla1, Olga Stawarz1, Maria Karpińska2, Jacek Kapała2,
Krzysztof Kozak3, Dominik Grządziel3, Stanisław Chałupnik4, Izabela Chmielewska4, Jerzy Olszewski5, Tadeusz A. Przylibski6, Adam Żebrowski 6

1 Central Laboratory for Radiological Protection, 7 Konwaliowa Str., 03-194 Warsaw, Poland
2 Department of Biophysics, Medical University of Białystok,
2A A. Mickiewicza Str., 15-089 Białystok, Poland
3 The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences,
152 Radzikowskiego Str., 31-342 Kraków, Poland
4 Central Mining Institute, 1 Gwarków Sq., 40-166 Katowice, Poland
5 Nofer’s Institute of Occupational Medicine, 8 Św. Teresy Str., 90-950 Łódź, Poland
6 Division of Geology and Mineral Waters, Faculty of Geoengineering, Mining and Geology,
Institute of Mining, Wrocław University of Technology,
27 Wybrzeże S. Wyspiańskiego, 50-370 Wrocław, Poland

Six radon laboratories, which perform indoor radon measurements to jointly investigate temporal variations of radon concentration in houses in a couple of regions in Poland, participated in the intercomparison exercise. There are involved three commercially available Hungarian RadoSys systems and four own laboratory methods. All of them are based on the etched-track CR-39 detectors. The intercomparison was conducted in a calibration laboratory of the Central Laboratory for Radiological Protection (CLOR), Warsaw, Poland, accredited by the Polish Center for Accreditation (previously AP 101, at present AP 057). Comparison measurements were performed during three expositions in the CLOR’s radon calibration chamber under controlled normal climatic conditions and steady radon concentration. The results were referred to the value of the radon concentration determined by AlphaGUARD monitor traceable to the primary 222Rn standard in Physikalisch-Technische Bundesanstalt (PTB), Braunchweig, Germany. The mean performance ratio defined as a ratio of the reference to participant’s result range from 0.88 to 1.31.

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