Radon emission rate and analysis of its influencing parameters

• Autorzy: Neugebauer T. , Hingmann H. , Buermeyer J. , Grimm V. , Breckow J.

Identyfikatory

DOI

10.1515/nuka-2016-0056

• Konferencja: International Conference „Radon in the Environment” (2nd ; 25-29.05.2015 ; Kraków, Poland)
• Języki publikacji: EN

Abstrakty

EN

The geological and structural conditions define the radon situation inside a building. While the geological realities can be specified by the content of radium-226 and the ratio of radon-222 emitted from the ground the structural conditions are defined by the tightness of the building envelope. The radon concentration inside has an unsteady character, which is caused by meteorological conditions outside and the air change rate (ACH or ACR), which in turn is influenced by the residents’ behaviour such as venting and heating. For the assessment of the radon exposition, it is necessary to perform measurements for a long time. An approach to reduce this time by eliminating the inhabitants influence on the radon concentration is the radon emission rate, also known as radon entry rate. This variable is based on the measurement of the radon concentration and the parallel determination of the air change rate via a tracer gas method, the result expresses a released activity per time. Due to their noisy character, it is necessary to apply a smoothing algorithm to the input parameters. In addition to mean values, the use of window functions, known from digital signal processing, was analysed. For the verification of the whole calculation procedure, simulations and measurements under defined conditions were used. Furthermore, measurements in an uninhabited house showed proof of the capability of the assessment of the radon potential. First examinations of influencing parameters of the radon emission rate showed a possible dependence on the temperature difference inside and outside the building.

Słowa kluczowe

EN

air change rate; radon emission rate; radon entry rate; radon exposition; window function

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2016
• Tom: Vol. 61, No. 3
• Strony: 337--342
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Neugebauer T.

• Technische Hochschule Mittelhessen (THM), Institut für Medizinische Physik und Strahlenschutz (IMPS), Wiesenstrasse 14, 35394 Giessen, Germany, Tel.: [phone], Fax: [phone]

autor

Hingmann H.

• Technische Hochschule Mittelhessen (THM), Institut für Medizinische Physik und Strahlenschutz (IMPS), Wiesenstrasse 14, 35394 Giessen, Germany, Tel.: [phone], Fax: [phone]

autor

Buermeyer J.

• Technische Hochschule Mittelhessen (THM), Institut für Medizinische Physik und Strahlenschutz (IMPS), Wiesenstrasse 14, 35394 Giessen, Germany, Tel.: [phone], Fax: [phone]

autor

Grimm V.

• Technische Hochschule Mittelhessen (THM), Institut für Medizinische Physik und Strahlenschutz (IMPS), Wiesenstrasse 14, 35394 Giessen, Germany, Tel.: [phone], Fax: [phone]

autor

Breckow J.

• Technische Hochschule Mittelhessen (THM), Institut für Medizinische Physik und Strahlenschutz (IMPS), Wiesenstrasse 14, 35394 Giessen, Germany, Tel.: [phone], Fax: [phone]

Bibliografia

• 1. Grosche, B., Kreuzer, M., Kreisheimer, M., Schnelzer, M., & Tschense, A. (2006). Lung cancer risk among German male uranium miners: a cohort study, 1946–1998. Br. J. Cancer, 95, 1280–1287.
• 2. Darby, S., Hill, D., Deo, H., Auvinen, A., Barros-Dios, J. M., Baysson, H., Bochicchio, F., Falk, R., Farchi, S., Figueiras, A., Hakama, M., Heid, I., Hunter, N.,Kreienbrock, L., Kreuzer, M., Lagarde, F., Mäkeläinen, I., Muirhead, C., Oberaigner, W., Pershagen, G., Ruosteenoja, E., Schaffrath Rosario, A., Tirmarche, M.,Tomášek, L., Whitley, E., Wichmann, H. -E., & Doll, R. (2006). Residential radon and lung cancer-detailed results of a collaborative analysis of individual data on 7148 persons with lung cancer and 14 208 persons without lung cancer from 13 epidemiologic studies in Europe. Scand. J. Work Environ. Health, 32(Suppl. 1), 1–84.
• 3. Kendall, G. M., & Smith, T. J. (2002). Doses to organs and tissues from radon and its decay. J. Radiol. Prot., 22, 389–406.
• 4. Council of the European Union. (2014). Council Directive 2013/59/EURATOM of 5 December 2013 laying down basic safety standards for protection against the dangers arising from exposure to ionizing radiation. Brussels: O. J. EU.
• 5. Roessler, F. A., Azzam Jai, T., Grimm, V., Hingmann, H., Orovwighose, T., Jach, N., & Breckow, J. (2014). First steps in the development of a possible measurement method to estimate the radon concentration as an indicator of the indoor air quality. Nucl. Technol. Radiat., 29(Suppl.), 52–58.
• 6. VDI-Association of German Engineers. (2001). Measurement of the indoor air change rate. Duesseldorf: Association of German Engineers (VDI). (VDI 4300-7).
• 7. Blackman, R. B., & Tukey, J. W. (1958). Measurement of power spectra. New York: Dover Publications, Inc.
• 8. Smith, S. (1999). The scientist and engineer’s guide to digital signal processing. San Diego: California Technical Publishing.
• 9. Udovicic, V., Filipovic, J., Dragic, A., Banjanac, R., Joković, D., Maletić, D., Grabež, B., & Veselinović, N. (2014). Daily and seasonal radon variability in the underground low-background laboratory in Belgrade, Serbia. Radiat. Prot. Dosim., 160(1/3), 62–64

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.