Authors:
J. Somlai University of Pannonia Institute of Radiochemistry and Radioecology P.O. Box 158 8201 Veszprém Hungary

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G. Szeiler University of Pannonia Institute of Radiochemistry and Radioecology P.O. Box 158 8201 Veszprém Hungary

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P. Szabó University of Pannonia Institute of Radiochemistry and Radioecology P.O. Box 158 8201 Veszprém Hungary

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A. Várhegyi Mecsek-Öko Environmental Protection Co. P.O. Box 121 H-7614 Pécs Hungary

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S. Tokonami National Institute of Radiological Sciences 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan

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T. Ishikawa National Institute of Radiological Sciences 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan

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A. Sorimachi National Institute of Radiological Sciences 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan

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S. Yoshinaga National Institute of Radiological Sciences 4-9-1 Anagawa, Inage-ku Chiba 263-8555 Japan

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T. Kovács University of Pannonia Institute of Radiochemistry and Radioecology P.O. Box 158 8201 Veszprém Hungary

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Abstract  

In the last few decades attention has been given to improve workplace conditions, primarily to reduce the different health risks. In the air that accumulates in underground workplaces radon may constitute one of the health risks. The radon concentration in the show cave in Tapolca is especially high in summer months, with the annual average in the year 2005 being 7227 Bq/m3, in 2006 8591 Bq/m3. The radon concentration was found to be independent on the location of the measurement. Its value was rather similar for working hours and for the total period. The hours spent in the cave by the workers depend on the number of visitors. The radiation dose, estimated on the basis of personal dosimeters, is significant for those working there especially, employed during the whole year. Taking into consideration the actual working hours and the equilibrium factor, F = 0.4, given in the literature, it approaches and even exceeds the dose limit of 20 mSv/year. With a well organized work schedule, as well as the employment of outside workers during the summer period, the dose limit of 20 mSv/year can probably be maintained. However, on the basis of recent measurements, the actual equilibrium factor was determined to be F = 0.5, which in turn means a further 25% increase in the dose effect.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)