Affiliation:
1. Radiation and Environmental Protection Department, Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
2. Laboratory for Nuclear and Plasma Physics, Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
Abstract
Various imported building materials commonly used in construction and
industry in Serbia were analyzed using gamma spectrometry. Based on the
activity concentrations of 226Ra, 232Th, and 40K in the investigated samples,
radium equivalent activity, Raeq, absorbed dose rate, D, annual effective
dose, DE, and the external hazard index, Hex, were calculated to assess the
radiation hazard for people. The Raeq for most of the analyzed samples (416
in total) was lower than the maximum admissible value of 370 Bqkg-1 set in
the UNSCEAR report. The absorbed gamma dose rate in air was found to vary
from 0.030 mGyh-1 to 1.328 mGyh-1 which in some cases exceeded indoor dose
rates in Europe. The obtained values for annual effective dose exceed the
limits of 0.41 mSv given in literature for about 5 % of measured samples,
while values of Hex were higher than unity for three samples of cement, eight
samples of granite, and one sand sample. As a possible source of elevated
effective dose, the radon exhalation from building materials was estimated
using the parameters given in literature. The internal dose due to 222Rn
exhaled from the building material was found to be up to nine times higher
than external dose due to 226Ra content in some cases.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Subject
Safety, Risk, Reliability and Quality,Nuclear Energy and Engineering
Cited by
7 articles.
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