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1
Content available Contribution of mine water and uranium ore rocks to the 222Rn-induced radiation dose received by the mine workers in a low-ore grade underground uranium mine, India
Beg Imran Athar, Sahu Patitapaban
Journal of Sustainable Mining
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2024
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Vol. 23, iss. 2
177--184
EN
More than 50% of the radiation dose received by underground mine workers is mainly due to the inhalation of radon (222Rn) gas and its decay products in an underground mine working space. Monitoring and controlling of 222Rn exhalation in the underground mine working play a vital role in minimizing the radiation risk hazards to the mine workers. This study discusses the contribution of mine water and uranium ore to 222Rn activity concentration in mine air and its health risk assessment. The annual effective radiation dose (ERn) due to inhalation of 222Rn for mine workers is estimated at 0.10 mSv/y. Furthermore, the estimated excess lifetime cancer risk (ELCR) and radon-induced lung cancer per million per person (RnLCC) is found to be 0.3 x 10-3 and 0.002 x 10-6. The estimated results of ERn and RnLCC due to the inhalation of 222Rn are well within the prescribed limits of the international regulatory agencies.
2
Content available Indoor Air Quality in a Selected Health Resort Facility: Analysis of PM10, PM2.5 and 222Rn Concentrations
Merenda Beata, Maciejewski Piotr, Bezyk Yaroslav, Sówka Izabela
Journal of Ecological Engineering
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2022
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Vol. 23, nr 10
202--215
EN
This paper discusses the importance of indoor air quality and indicates its relation with outdoor air quality in the area of spa treatment. Significant factors and sources causing indoor air pollution by particulate matter and radon are considered. Particular attention is drawn to specific functions of health resorts in spa treatment in the context of the importance of indoor and outdoor air for patients staying in the resorts. It is underlined the specificity of health resorts providing treatment for patients classified as the group most sensitive to air pollution, i.e. people with chronic respiratory diseases. The study comprised measurements of 24-h concentrations of PM10, PM2.5 and 10-minute instantaneous concentrations of radon-222 (222Rn) from February 5 to February 25, 2021 in a treatment room of one of the Polish spas located in Lower Silesia. The analysis of interactions between the concentrations of two fractions of particulates PM10 and PM2.5 was presented. The interaction and dependence of factors affecting the elevated values of concentrations of the studied pollutants were discussed. The presented analyses showed that the concentrations of the studied pollutants were influenced by air exchange and air infiltration from outside to inside. In the case of short-term measurements of 222Rn activity concentration in the air, it was found that the observed changes in hourly concentrations of 222Rn are analogous to those observed in residential buildings. For the specific time intervals, the variation of PM concentrations and 222Rn activity concentration was found to be similar.
3
Content available Parameter sensitivity analysis of the theoretical model of a CR-39-based direct 222Rn/220Rn progeny monitor
Hu Jun, Hosoda Masahiro, Tokonami Shinji
Nukleonika
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2020
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Vol. 65, No. 2
95--98
EN
The deposition-based direct indoor 222Rn and 220Rn progeny measurement techniques are mostly affected by the indoor environmental conditions, such as the ventilation, concentration of condensation nuclei, and reactions with the structure and its furnishings. In this study, a theoretical model of a direct 222Rn and 220Rn progeny monitor based on allyl diglycol carbonate (ADC or CR-39) was established to analyse the factors that influence the detection process by using the parameter sensitivity analysis. The aerosol parameters contributed the highest to the variance, followed by the aerodynamic parameters. With respect to the result of the Spearman’s correlation analysis, the aerosol-related and the room-related parameters are positive, whereas the aerodynamic parameters – which affect the turbulence of indoor deposition – are negative. It means that both the attachment process and the deposition process of 222Rn and 220Rn progenies are important to the performance of the progeny monitor.
4
Content available Measurements of 222Rn activity in the buildings of the Opole University
Godyń P., Dołhańczuk-Śródka A., Ziembik Z., Kłos A.
Proceedings of ECOpole
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2013
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Vol. 7, No. 2
479--484
EN
The aims of this study were the analysis of the risk arising from the activity of 222Rn in the buildings of the Opole University. The 222Rn activity measurements were made using a portable spectrometer Alphaguard in five buildings of Opole University. The study was conducted at different levels/floors of the buildings (building on the Kominka street, the Main Building lobby, the Department of Physics (Wing of Main Building) the Collegium Biotechnologicum and Collegium Chemicum), and in classrooms in Collegium Biotechnologicum. The obtained results showed no potential health risk from radon contamination. However it was observed that humans staying on the lower floors are more vulnerable to radiation associated with 222Rn decays, due to the physical properties of this element.
PL
Celem przeprowadzonych badań była analiza ryzyka związanego z aktywnością 222Rn w budynkach Uniwersytetu Opolskiego. Pomiarów aktywności 222Rn dokonano za pomocą przenośnego spektrometru Alphaguard w pięciu budynkach Uniwersytetu Opolskiego. Badania przeprowadzone na różnych poziomach budynków (Collegium Biotechnologicum, Collegium Chemicum, budynek przy ulicy Kominka, budynek Wydziału Fizyki oraz budynek główny), a także w klasach na terenie Collegium Biotechnologicum. Uzyskane wyniki wykazały brak potencjalnego zagrożenia zdrowia wynikającego z zanieczyszczeniem radonem. Jednocześnie zaobserwowano, że pracownicy przebywający na niższych piętrach są bardziej narażeni na promieniowanie związane z jego rozpadami, co wynika z właściwości fizycznych tego pierwiastka.
5
Content available Influence of year season and room type on indoor 222Rn activity
Dołhańczuk-Śródka A., Ziembik Z., Majcherczyk T., Wacławek M.
Proceedings of ECOpole
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2010
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Vol. 4, No. 2
249--252
EN
In this work the monitoring of 222Rn was carried out in selected houses, located in the district of Krapkowice (it lies to the south of Opole, PL). The passive detectors LR-115 type II films (Kodak, Pathe) have been used in this survey. The measurements were carried out in single-storied residential houses in two time periods: from the end of June to the end of September and from the beginning of November to the beginning of February. The detectors were placed in kitchens, bathrooms and cellars. Our results showed that in all of the rooms examined the Rn activity did not exceed 149 kBq/m3. This value is lower than the European Commission recommendations for existing buildings (Commission recommendation 2001/928/Euratom). Considering all of room types investigated, no statistically significant differences between 222Rn activities in summer and in winter were asserted. But in cellars higher than in other rooms 222Rn activities were confirmed, independently on the season of year. In most of the houses activities of 222Rn were similar, though in two of them they were significantly higher than in the others.
PL
Przedstawiono wyniki badań aktywności 222Rn przeprowadzonych w wybranych budynkach znajdujących się na terenie powiatu krapkowickiego (na południe od Opola, PL). W badaniach wykorzystano pasywne detektory typu LR-115 (Kodak, Pathe). Pomiary przeprowadzono w jednorodzinnych domach mieszkalnych w dwóch okresach: od końca czerwca do końca września i od początku listopada do początku lutego. Detektory zostały umieszczone w kuchniach, łazienkach i piwnicach. Otrzymane wyniki wskazują, że w żadnym z pomieszczeń aktywność 222Rn nie przekroczyła 149 kBq/m3. Wartość ta jest niższa od zalecanej przez Komisję Europejską dla budynków istniejących (zalecenie Komisji 2001/928/Euratom). Biorąc pod uwagę wszystkie rodzaje badanych pomieszczeń, nie stwierdzono statystycznie istotnych różnic między aktywnością 222Rn w okresie letnim i zimowym. W piwnicach stwierdzono wyższą niż w innych pomieszczeniach aktywność 222Rn, niezależnie od pory roku. W większości domów aktywności 222Rn były podobne, choć w dwóch z nich były one znacząco większe niż w pozostałych.
6
Content available Potencjalnie lecznicze wody radonowe Masywu Ślęży
Przylibski T. A., Fijałkowska L., Bielecka A.
Przegląd Geologiczny
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2008
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Vol. 56, nr 8/2
763-771
EN
The authors have conducted research on radon occurrence in the groundwater system of Ślęża Massif in the Fore-Sudetic block. The research included documenting occurrence of radon waters in the granitoids of Strzegom-Sobótka Massif, buildingNWandWslopes of Ślęża. Among several springs flowing out from the granitoids and their waste, the Klasztorne Spring is characterized by constant radon (222Rn) concentration (306 ±39 Bq/dm3), but also constant though small discharge during the year, which enables estimating the admissible volume of this spring at 0.3 m3/h. The results obtained during the research show that this water can be treated as potentially medicinal. It generates the opportunity for the nearby town of Sobótka to develop as a health resort. Confirming the presence of radon groundwater in the granitoid part of Ślęża Massif implies a great probability that such w occur in the whole area of the Strzegom-Sobótka intrusion. It opens possibilities of recognizing new resources of potential therapeutic water and entails the necessity to take suitable actions for radiological protection of people living in this area.
7
Content available remote Sezonowe zmiany aktywności radonu w pomieszczeniach mieszkalnych
Dołhańczuk-Śródka A., Ziembik Z., Chalecka E., Wacławek M.
Ecological Chemistry and Engineering. S
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2008
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Vol. 15, nr 1
61-68
PL
Przedstawiono wyniki pomiarów aktywności 222Rn wykonanych przez uczniów Gimnazjum w Strzeleczkach, którzy pod kierunkiem nauczyciela chemii umieszczali w swoich domach (znajdujących się na terenie gminy Strzeleczki) na okres 2 miesięcy detektory śladowe. Pomiary powtarzano dwukrotnie: w sezonie zimowym i w letnim 2007 roku. Do pomiaru aktywności 222 Rn wykorzystano metodę detektorów śladowych, którymi były klisze typu LR-115 firmy Kodak, czule na promieniowanie alfa. Pomiary wskazują, że wszystkie z ww. mieszkań spełniają obowiązujące zalecenia Komisji Europejskiej z dn. 2 1.02.1990 r. (Commission Recommendation 90/143/Euratom) dotyczące dopuszczalnych aktywności radonu. Przeprowadzone pomiary umożliwiły ocenę zagrożenia radonem w badanym regionie, dodatkowym efektem przedsięwzięcia było rozpropagowanie wśród młodzieży i mieszkańców gminy wiedzy na ten temat.
EN
The results of 222Rn activity measurements in apartment rooms were described. The data were obtained by pupils from junior high school in Strzeleczki, Opole Silesia, Poland, who under guidance of chemistry teacher placed trace detectors in their apartments. The 2 month measurements were repeated twice, first time in winter and second time in summer 2007. For 222Rn activity measurements the trace detectors method was chosen, using Kodak LR-115 films. The results showed that in all of apartments examined the Rn activity did not exceed the European Commission recommendations (Commission Recommendation 90/143/Euratom, 21.02.1990). The measurements performed allowed to assess the Rn risk in the region investigated. Additionally, the knowledge about Rn hazard was distributed among commune citizens.
8
Badania aktywności radonu na terenie gminy Strzeleczki
Dołhańczuk-Śródka A., Chalecka E., Ziembik Z., Smuda M., Wacławek M.
Chemia i Inżynieria Ekologiczna
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2006
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Vol. 13, nr S4
539-546
PL
Przedstawiono wyniki pomiarów aktywności 222Rn wykonanych przez uczniów Gimnazjum w Strzeleczkach w 31 mieszkaniach. Pomiary miały na celu rozpropagowanie wśród młodzieży i mieszkańców gminy wiedzy na temat zagrożeń radiologicznych. Pomiary wskazują, że wszystkie z ww. mieszkań spełniają obowiązujące zalecenia Komisji Europejskiej z dn. 21.02.1990 r. (Commission Recommenda-tion 90/143/Euratom) dotyczące dopuszczalnych aktywności radonu.
EN
Presented results of measurement of the 222Rn radioactivity into 31 fiat buildings carriered out by schoolboys of the secondary school in Strzeleczki, Opole province, Pl. Measurements had on purpose lo propagating among young people knowledge about radiological threats and instrumentation - of consciousness among young people and the fest of inhabitants of the district. The measurements were performed by pupils of the Grammar School. The purpose of them was spreading of knowledge on radio-logical risk for people. The results for all houses revealed, that radon concentrations are smaller. than the EU Commission recommendations (90/143/Euratom).
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