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Title: Systematic indoor radon and gamma-ray measurements in Slovenian schools

Abstract

During the winter months of 1992/93 and 1993/94, instantaneous indoor radon concentrations and gamma dose rates were measured in 890 schools in Slovenia attended in total by about 280,000 pupils. Under closed conditions, the room to be surveyed was closed for more than 12 h prior to sampling, the air was sampled into alpha scintillation cells with a volume of 700 cm{sup 3}, and alpha activity was measured. An arithmetic mean of 168 Bq m{sup {minus}3} and a geometric mean of 82 Bq m{sup {minus}3} were obtained. In 67% of schools, indoor radon concentrations were below 100 Bq m{sup {minus}3}, and in 8.7% (77 schools with about 16,000 pupils) they exceeded 400 Bq m{sup {minus}3}, which is the proposed Slovene action level. In the majority of cases, radon concentrations were high due to the geological characteristics of the ground. Approximately 70% of schools with high radon levels were found in the Karst region. Gamma dose rates were measured using a portable scintillation counter. An arithmetic mean of 102 nGy h{sup {minus}1} and a geometric mean of 95 nGy h{sup {minus}1} were obtained. No extraordinarily high values were recorded.

Authors:
; ;
Publication Date:
Research Org.:
J. Stefan Inst., Ljubljana (SI)
Sponsoring Org.:
Slovenian Ministry of Science and Technology; Slovenian Ministry of Health
OSTI Identifier:
20075785
Resource Type:
Journal Article
Journal Name:
Health Physics
Additional Journal Information:
Journal Volume: 78; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0017-9078
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 61 RADIATION PROTECTION AND DOSIMETRY; INDOOR AIR CONTAMINATION; RADON; RADIATION MONITORING; SLOVENIA; SCHOOL BUILDINGS; RADIOECOLOGICAL CONCENTRATION; RADIATION DOSES

Citation Formats

Vaupotic, J., Sikovec, M., and Kobal, I. Systematic indoor radon and gamma-ray measurements in Slovenian schools. United States: N. p., 2000. Web. doi:10.1097/00004032-200005000-00014.
Vaupotic, J., Sikovec, M., & Kobal, I. Systematic indoor radon and gamma-ray measurements in Slovenian schools. United States. doi:10.1097/00004032-200005000-00014.
Vaupotic, J., Sikovec, M., and Kobal, I. Mon . "Systematic indoor radon and gamma-ray measurements in Slovenian schools". United States. doi:10.1097/00004032-200005000-00014.
@article{osti_20075785,
title = {Systematic indoor radon and gamma-ray measurements in Slovenian schools},
author = {Vaupotic, J. and Sikovec, M. and Kobal, I.},
abstractNote = {During the winter months of 1992/93 and 1993/94, instantaneous indoor radon concentrations and gamma dose rates were measured in 890 schools in Slovenia attended in total by about 280,000 pupils. Under closed conditions, the room to be surveyed was closed for more than 12 h prior to sampling, the air was sampled into alpha scintillation cells with a volume of 700 cm{sup 3}, and alpha activity was measured. An arithmetic mean of 168 Bq m{sup {minus}3} and a geometric mean of 82 Bq m{sup {minus}3} were obtained. In 67% of schools, indoor radon concentrations were below 100 Bq m{sup {minus}3}, and in 8.7% (77 schools with about 16,000 pupils) they exceeded 400 Bq m{sup {minus}3}, which is the proposed Slovene action level. In the majority of cases, radon concentrations were high due to the geological characteristics of the ground. Approximately 70% of schools with high radon levels were found in the Karst region. Gamma dose rates were measured using a portable scintillation counter. An arithmetic mean of 102 nGy h{sup {minus}1} and a geometric mean of 95 nGy h{sup {minus}1} were obtained. No extraordinarily high values were recorded.},
doi = {10.1097/00004032-200005000-00014},
journal = {Health Physics},
issn = {0017-9078},
number = 5,
volume = 78,
place = {United States},
year = {2000},
month = {5}
}