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RADIATION DOSE ORIGINATING FROM RADON AND RADON PROGENY EFFECTING WORKERS IN THE SHOW CAVE OF TAPOLCA (HUNGARY). T. Kovács 1 , J. Somlai 1 , A. Kopek 2 , G. Szeiler 1 , G. Pomázi, Z. Sas 3 ,. 1 University of Pannonia, Institute of Radiochemistry and Radioecology, Veszprém (Hungary)
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RADIATION DOSE ORIGINATING FROM RADON AND RADON PROGENY EFFECTING WORKERS IN THE SHOW CAVE OF TAPOLCA (HUNGARY) T. Kovács1, J. Somlai1, A. Kopek2, G. Szeiler1, G. Pomázi, Z. Sas3, 1University of Pannonia, Institute of Radiochemistry and Radioecology, Veszprém (Hungary) 2 Balaton Uplands National Park, Csopak (Hungary) 3 Mecsek-ÖKO Zrt, Pécs (Hungary) 4Social Organization for Radioecological Cleanliness, Veszprém (Hungary)
16/2000. (VI. 8.) EüM • Personal dosimetry is required (inspite of the sources are terrestrial radioisotopes) in the case of the following workplaces: • 26.1. Spas, caves (therapy and show caves), underground mines, other underground workplaces
Radon referencelevelforworkplaces: ICRP 65 (1993): 500-1500 Bq/m3 ICRP 103 (2007): max. 1500 Bq/m3 ICRP (2009): max. 1000 Bq/m3 WHO (2009): max. 1000 Bq/m3 Hungary: max. 1000 Bq/m3
Average radon activityconcentration(kBq/m3)12/03/2003 – 02/10/2003. • Annual average >1000 Bq/m3 • Aeration is not allowed • Hazardous radiation workplace • Dosimetry required
Monthlyaverage radon activityconcentrationinthecave and thelounge(2006 – 2011)
Outdoortemperaturedependency of radon concentration Cave Lounge
Outdoor air pressuredependency of radon concentration Cave Lounge