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Radiation Protection Dosimetry Advance Access published online on May 17, 2007
Radiation Protection Dosimetry, doi:10.1093/rpd/ncm180
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

INDOOR RADON LEVELS IN PRIMARY SCHOOLS OF PATRAS, GREECE

H. Papaefthymiou1,* and C. D. Georgiou2

1 Division of Physical, Inorganic and Nuclear Chemistry, Department of Chemistry, University of Patras, Patras, Greece
2 Division of Genetics, Cell Biology and Development, Department of Biology, University of Patras, Patras, Greece

* Corresponding author: epap{at}chemistry.upatras.gr

Received November 22, 2006, amended January 15, 2007, accepted January 29, 2007

Radon activity concentrations have been measured in 53 from a total of 66 public primary schools throughout of Patras, Greece, during December 1999 to May 2000 using solid-state nuclear track detectors (LR-115 II). The indoor radon levels in the classrooms were generally low, ranging from 10 to 89 Bqm–3. The mean (arithmetic mean) indoor concentration was 35 ± 17 Bq m–3 and an estimated annual effective dose of 0.1 ± 0.1 mSv y–1 was calculated for students and 0.2 ± 0.1 mSv y–1 for teachers, assuming an equilibrium factor of 0.4 and occupancy factor of 12 and 14%, respectively. The research was also focused on parameters affecting radon concentration levels such as floor number of the classrooms and the age of the buildings in relation to building materials.


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