دورية أكاديمية
INFLUENCE OF BUILDING FEATURES ON RADON ACCUMULATION IN KINDERGARTENS OF THE SVERDLOVSK REGION
| العنوان: | INFLUENCE OF BUILDING FEATURES ON RADON ACCUMULATION IN KINDERGARTENS OF THE SVERDLOVSK REGION |
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| المؤلفون: | A. D. Onishchenko, A. V. Vasilyev, G. P. Malinovsky, M. V. Zhukovsky |
| المصدر: | Радиационная гигиена, Vol 11, Iss 2, Pp 28-36 (2018) |
| بيانات النشر: | Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Medical physics. Medical radiology. Nuclear medicine LCC:Radioactivity and radioactive substances |
| مصطلحات موضوعية: | радон, детские дошкольные учреждения, трековые детекторы, суточные вариации, Medical physics. Medical radiology. Nuclear medicine, R895-920, Radioactivity and radioactive substances, QC794.95-798 |
| الوصف: | Objective: To study the levels of radon accumulation in kindergartens in Sverdlovsk Region and to determine the relationship between radon concentration, and building characteristics. To perform a detailed analysis of radon entry and accumulation in the kindergarten, in which radon concentration exceeds the safety standards.Materials and methods: Track detectors REI-4 on the base of LR-115 film were used. Detectors were installed in playrooms and bedrooms for day nap. In each kindergarten, at least 3 rooms were examined. The measurements were carried out twice a year, during the warm and cold seasons. The duration of exposure of the detectors was 2–3 months in each season. The AlphaGUARD radon monitor was installed in the kindergarten with a high level of radon concentration.Results: It is shown that the distribution of radon concentration in the kindergartens of the Sverdlovsk region can be described by a lognormal distribution with an average value of 60 Bq/m3, a geometric mean of 44 Bq/m3 and a standard geometric deviation of 2.23. A statistically significant difference was found between the mean values of radon concentration in subgroups of buildings constructed at different periods. For the kindergartens constructed in 1950–1969, the average radon concentration was 85 Bq/m3, for buildings built in 1970–1989 – 54 Bq/m3. When comparing subgroups of rooms with different types of windows (all buildings, ground floors) it was found that in rooms with PVC windows, radon concentration is almost twice as high then in rooms with wooden windows. For the kindergarten, in which the annual radon concentration in the playroom was 620 Bq/m3, it was shown, that if the proper ventilation regime of this room is observed, the average radon concentration during the presence of children does not exceed 120 Bq/m3.Conclusions. Factors affecting the indoor radon accumulation in the kindergartens are the type of building materials associated with different periods of building construction and the type of windows. When radon concentration measured in kindergartens reach sanitary standards, it is advisable to conduct an additional study of the daily radon variations, since during the active operation of the premises (working hours) radon levels may be significantly lower |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Russian |
| تدمد: | 1998-426X |
| Relation: | https://www.radhyg.ru/jour/article/view/552; https://doaj.org/toc/1998-426X |
| DOI: | 10.21514/1998-426X-2018-11-2-28-36 |
| URL الوصول: | https://doaj.org/article/7e059ff515fb42dab6f76e7528b55388 |
| رقم الأكسشن: | edsdoj.7e059ff515fb42dab6f76e7528b55388 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 1998426X |
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| DOI: | 10.21514/1998-426X-2018-11-2-28-36 |