Dose assessment due to radon exposure in dwellings, schools and kindergarten

Stojanovska, Zdenka and Zunic, Zora S. and Ivanova, Kremena and Bossew, Peter and Boev, Blazo and Martina, Tsenova and Taleski, Vaso (2015) Dose assessment due to radon exposure in dwellings, schools and kindergarten. In: Radon in the Environment 2015, 25-29 May 1015, Krakow, Poland. (Unpublished)

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Abstract

Radon concentrations measurements were performed in 40 dwellings, 35 elementary schools and 5 kindergartens in 3 municipalities in Republic of Macedonia by two types CR-39 nuclear track detectors. In the dwellings, the measurements were performed with detectors commercially named RSKS for one year period from June 2013 to May 2014 in the most occupied rooms of the buildings: living room or bedroom. The detectors type Gamma 1 were exposed for the same period in the kindergartens playroom or bedroom. The measurements in schools were performed in one classroom with paired Gamma 1 detectors. One detector was exposed during the same period as detectors in the dwellings and kindergarten and other in the period of the school year duration, starting September 2013 to May 2014. In order to check reproducibility of the results paired RSKS and Gamma 1 detectors were exposed in five schools. We accepted equality of the results at 95% confidence level.
The distribution of the measured data in all observed buildings was well fitted by lognormal function. The geometric mean values of radon concentrations obtained for dwellings (129 Bq/m3), schools (127 Bq/m3) and kindergartens (125 Bq/m3) in these municipalities were higher than country average radon concentration (84 Bq/m3) reported in national survey. Taking into account different occupation time the estimated annual effective doses due to radon exposure were found to be 3.3 mSv in dwellings, 0.8 mSv in kindergartens, 0.4 mSv for teachers in schools and 0.3 mSv for children in schools. We obtained that different exposure time of detectors in schools did not influence annual effective dose for teachers and children.

Item Type:	Conference or Workshop Item (Speech)
Subjects:	Natural sciences > Physical sciences
Divisions:	Faculty of Medical Science
Depositing User:	Zdenka Stojanovska
Date Deposited:	30 Sep 2015 13:00
Last Modified:	30 Sep 2015 13:00
URI:	https://eprints.ugd.edu.mk/id/eprint/13245

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