Some remarks on the indoor radon distribution in a country

Hámori, Krisztián; Tóth, Eszter; Losonci, András; Minda, Mihály

doi:10.1016/j.apradiso.2006.02.098

Cited by 20 publications

(6 citation statements)

References 11 publications

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“…Kutatásaik központjában az állt, hogy a bányászati alagút közelsége milyen mértékben befolyásolja a családi házak radon szintjét. HÁMORI et al (2006a;2006b) több mint 15000 lakásban végeztek méréseket, mérési eredményeik átlaga 133 Bq/m 3 volt. Később MINDA et al (2009) 17244 lakásra terjesztették ki megfigyeléseiket.…”

Section: Bevezetésunclassified

Családi házak beltéri radon aktivitás koncentráció felmérése Pest megyében

Fekti

Székely

Horváth

et al. 2022

JCEGI

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A koronavírus járvány megelőzésére hozott intézkedéseknek köszönhetően minden eddiginél többet töltöttünk zárt terekben, – például otthonainkban - mint korábban. Nem csak a levegőben terjedő Covid-19 vírus gyakorolt hatást szervezetünkre, hanem a természetes forrásokból származó ionizáló sugárzás, a bent tartózkodók légzéséből kialakuló magasabb széndioxid koncentráció vagy a tevékenységünkből (főzés, dohányzás, stb) levegőbe kerülő szennyező anyagok is. A bentlakók életvitelén kívül az épületek szerkezete, a beépített határolószerkezetek és az épületgépészeti egységek (hőenergia előállítás, szellőzés) határozzák meg a beltéri levegő minőségét. 2019 decemberében másféléves, Pest megye keleti részét érintő beltéri radonkoncentráció meghatározását célzó méréssorozatot indítottunk el 7 település 24 családiházának bevonásával. Eredményeink egyértelműen mutatják az évszakok közötti különbséget, de különbségek mutathatók ki a családiházak építészeti és épületgépészeti megoldásai között is.

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Section: Bevezetésunclassified

Családi házak beltéri radon aktivitás koncentráció felmérése Pest megyében

Fekti

Székely

Horváth

et al. 2022

JCEGI

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“…Applying Shapiro-Wilk and Kolmogorov-Smirnov tests on the experimental radon data, it has been concluded that experimental data set for average annual radon activity concentrations in Montenegrin homes does not conform to a log-normal distribution [8], just like in a number of other countries [21,[24][25][26][27][28]. In the Montenegrin case, it has been shown [8] that subtracting 7 Bq m -3 from experimental indoor radon concentrations, as assumed radon concentration in outdoor air, and giving a small positive value of 5 Bq m -3 to all negative and zero values resulted because of this subtraction in order to avoid losing experimental data points, transform the experimental data to a set of data which pass both mentioned statistical tests of log-normality.…”

Section: Univariate Analysismentioning

confidence: 99%

Influence of climate, building and residential factors on radon levels in ground-floor dwellings in Montenegro

Vukotic

Antovic

Zekic³

et al. 2021

NUCL TECH RAD PROT

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After year-long measurements with CR-39 detectors, nationwide radon survey was performed in 953 homes - 0.5% of all permanently inhabited dwellings in Montenegro. Influence of 11 factors (area, climate, type of house, year of construction, basement, foundation slab, number of stories, building materials, window frames, heating and smoking) and 35 their categories on the radon concentrations in 732 ground-floor dwellings was analyzed using descriptive, univariate and multivariate methods. Univariate analysis dropped influence of the two factors - heating and smoking. It reveals that, on average, radon concentrations in ground-floor dwellings differ at 95% confidence level in urban and rural areas, in family houses and apartment buildings, in houses with and without basement, and in dwellings with window frames made of wood and PVC/Al. In Cf climate zone they differ from those in Cs and Df zones. Only two pairs of construction periods differ in mean radon concentrations in dwellings: 1980-1999 with 1900-1944, and with 1964-1979. Houses with one, two or three stories have almost equal average radon levels, which are higher than in buildings with more than three stories. Mean value of radon concentrations in houses made of stone are higher than in houses made of concrete, or bricks, or wood. Multivariate analysis revealed that six of the analyzed factors - area, climate, type of house, presence of basement, number of stories and building materials simultaneously have significant relationships (p < 0.05) with radon concentrations in dwellings on ground floor in Montenegro.

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“…Figure 5 shows that the average annual concentration of 222 Rn in ground floor is higher than that in the 1 st floor, which in turn is higher than that in secind floor in all room types. This result due to the fact that radon cannot climb up easily to the elevated floors because of the density of radon is 7.5 times higher than that of normal air, in addition to the effect of air pressure factor (Hamori, Toth, Losonci, & Minda, 2006). On the other hand, most of these houses are constructed directly on the ground with the small thickness or without any concrete base; also the glass windows prevent good ventilation and they are not frequently opened.…”

Section: Radon Levels and Indoor Doses In Dwellingsmentioning

confidence: 99%

Indoor radon levels, influencing factors and annual effective doses in dwellings of Al-Kharj City, Saudi Arabia

yousef

Zimami

2019

Journal of Radiation Research and Applied Sciences

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Inhalation of radon gas and its decay products ranked as a main source of natural radiation exposure. It is considered as a major cause of lung cancer after cigarette smoking. There are some very important factors that strongly affect the indoor radon levels such as: indoor airconditions, ventilation systems, and meteorological factors. In this article, we determined the indoor radon concentration and studied the seasonal variations of indoor radon levels to evaluate the annual effective dose received by the inhabitants in Al-Kharj city, Saudi Arabia. For this study, 84 houses were chosen and RAD 7 detector was used to examine cumulative radon exposure concentration from September 2014 to November 2017. Our measurements showed an obvious difference between radon concentration in winter (24.33 ± 11.10 Bq/m 3 ) and in summer (14.54 ± 5.50 Bq/m 3 ), while the average concentration in spring and autumn was very much close to the average annual radon concentration (19.23 ± 8.13 Bq/m 3 ). The average annual effective dose was found to be 0.49 mSv/y. The study revealed that the average indoor radon concentration as well as the annual effective dose rate is found to be less than the action level recommended by ICRP.

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Some remarks on the indoor radon distribution in a country

Cited by 20 publications

References 11 publications

Családi házak beltéri radon aktivitás koncentráció felmérése Pest megyében

Családi házak beltéri radon aktivitás koncentráció felmérése Pest megyében

Influence of climate, building and residential factors on radon levels in ground-floor dwellings in Montenegro

Indoor radon levels, influencing factors and annual effective doses in dwellings of Al-Kharj City, Saudi Arabia

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