scholarly journals Investigation the building walling influence on the radon concentration distribution in the soil

2018 ◽  
Vol 463 ◽  
pp. 022027
Author(s):  
N V Bakaeva ◽  
A V Kalaydo
Keyword(s):  
Radon Concentration ◽  
Concentration Distribution

Radon concentration in compressed natural gas and liquefied petroleum gas and its release range in residential houses

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Akbar Abbasi ◽  
Hesham M.H. Zakaly ◽  
Mahmoud M. Hessien
Keyword(s):  
Natural Gas ◽  
Radon Concentration ◽  
Concentration Distribution ◽  
Measurement Techniques ◽  
Concentration Measurement ◽  
Liquefied Petroleum Gas ◽  
Compressed Natural Gas ◽  
Radon Exposure ◽  
Active Method

Abstract Radon (222Rn) exposure in the environment is an important issue, and many pathways exist for radon exposure to humans. One of these pathways is 222Rn release through the consumption of natural gas. The issues of 222Rn concentration measurement techniques and worldwide concentration distribution were reviewed in natural gas, with emphasis on performing an active method to determine 222Rn concentration in LPG and CNG gases used in Cyprus. The obtained results were compared with 222Rn concentration in natural gas worldwide and UNSCEAR reports. The average 222Rn concentration value in LPG gas was observed higher than CNG gas. Also, the 222Rn concentration in LPG and CNG gases was less than the UNSCEAR reported value.

Numerical Simulation of Atmospheric Diffusion of Radon Emanating From Flat Ground Uranium Tailings Impoundment in Different Heights

2012 ◽  
Vol 518-523 ◽  
pp. 1677-1681 ◽  
Author(s):  
Xiao Yong Peng ◽  
Zhen Hao Liu ◽  
Qing Fang Xie ◽  
Xin Zhang ◽  
Fen Wan ◽  
...  
Keyword(s):  
Radon Concentration ◽  
Concentration Distribution ◽  
National Standard ◽  
Radon Emanation ◽  
Atmospheric Diffusion ◽  
Tailings Impoundment ◽  
Effective Doses ◽  
The Difference ◽  
Uranium Tailings ◽  
Flat Ground

The atmospheric diffusion and concentration distribution of radon (emanation rate is 6.06 Bq/m2s ) emanating from the flat ground uranium tailings impoundment at various heights(0m, 10m, 20m, and 30m) are simulated. The numerical results show that the different height of the tailings impoundment will mainly influence the radon concentration that could change in the range of 16~250 Bq/m3 at the downwind region of 0-300m. The radon concentration and annual effective doses for public from radon decrease sharply with the increasing distance away from tailings impoundment, are higher than that of the decommissioned uranium tailings impoundment (its height is 30m, radon emanation rate is 0.74 Bq/m2s ). The annual effective doses for public from radon are highly up to 1.12 mSv/a, and are 0.12 mSv/a greater than the national standard in the range of 800m. Considering the difference of average radon emanation rate and other factors, the protective distance from radon should be adjusted appropriately.

EVALUATION OF REPRESENTATIVENESS OF SAMPLES USED FOR INDOOR RADON SURVEYS

2020 ◽  
Vol 191 (2) ◽  
pp. 125-128
Author(s):  
M Caprio ◽  
G Venoso ◽  
M Ampollini ◽  
S Antignani ◽  
C Carpentieri ◽  
...  
Keyword(s):  
Radon Concentration ◽  
Concentration Distribution ◽  
Indoor Radon ◽  
Target Population ◽  
Population Based ◽  
Population Characteristics ◽  
Radon Exposure ◽  
Sample Representativeness ◽  
Potential Source ◽  
Population Based Survey

Abstract The estimation of the indoor radon exposure of the population of a country is generally carried out by the means of surveys designed in order to have sample representativeness as a target (population-based survey). However, the estimates of radon concentration distributions could be affected by biases if sampling was not random or in case of differences between sample and target population characteristics. In this work, we performed a preliminary check of the representativeness of the sample used for the second Italian national survey aimed to evaluate radon concentration distribution in each Province. We found that sampled dwellings are mostly located in the main administrative centres, where average radon concentration is generally lower, as compared with the other towns of the Province. The potential source of bias identified in this work suggests to carefully control the occurrence of a sampling imbalance between ‘main’ cities and other cities of Province and to take it into account in data analysis.

RADON MEASUREMENTS IN BIG BUILDINGS: PILOT STUDY IN RUSSIA

2020 ◽  
Vol 191 (2) ◽  
pp. 214-218
Author(s):  
A Vasilyev ◽  
I Yarmoshenko ◽  
A Onishchenko ◽  
M Hoffmann ◽  
G Malinovsky ◽  
...  
Keyword(s):  
Radon Concentration ◽  
Concentration Distribution ◽  
Indoor Radon ◽  
Office Building ◽  
Indoor Radon Concentration ◽  
High Rise ◽  
Radon Potential ◽  
Radon Variability ◽  
Radon Measurements ◽  
Radon Survey

Abstract Detailed analysis of indoor radon concentration distribution by floors was conducted in four children institutions, one office building and two residential houses in Russian cities to develop approaches to draw up a program of radon survey for big buildings. Higher variability of radon concentration was found in high geogenic radon potential (GRP) area when the soil is the main source of radon. No essential dependence of radon concentration on the floor in high-rise buildings was found in low GRP area. The number of required radon measurements is estimated using obtained characteristics of radon variability.

Distribution characteristics on indoor radon concentration of multiple-use facilities in Gwangju area

2019 ◽  
Vol 18 (2) ◽  
pp. 177-184 ◽  
Author(s):  
Min-jin Kim ◽  
Sang-su An ◽  
Min-cheol Cho ◽  
Se-il Park ◽  
Jong-min Kim ◽  
...  
Keyword(s):  
Radon Concentration ◽  
Indoor Radon ◽  
Distribution Characteristics ◽  
Multiple Use ◽  
Indoor Radon Concentration

The Measurements of Natural Radioactivity, (Radon and Gamma concentrations), around the old fertilizer factory in Basrah/Iraq

2015 ◽  
Vol 7 (1) ◽  
pp. 1324-1335
Author(s):  
Jabbar H. Jebur
Keyword(s):  
Effective Dose ◽  
Radon Concentration ◽  
Gamma Ray ◽  
Annual Effective Dose ◽  
Track Detector ◽  
Exhalation Rate ◽  
Hazard Indices ◽  
Radium Equivalent ◽  
Passive Technique ◽  
Radium Activity

Radon concentration, exhalation rate, annual effective dose, radium activity, thorium, uranium potassium and radium equivalent have been measured in the present investigation for soil in the area around the old fertilizer factory in southern of Basrah Governorate. The measurements based on CR39 track detector for passive method, RAD7 for active method and NaI(Tl) for gamma concentration measurements. Average values for radon concentration in soil were 112.04±10.76 Bq/m3 using passive technique and 104.56±6.05 Bq/m3 using RAD7. From the result of the passive technique, area and mass exhalation rates and the annual effective dose were calculated. Gamma ray spectroscopy for the soil samples were performed and found that the average concentrations of 226Ra, 232Th and 40K were 50.89 Bq/kg, 21.74 Bq/kg and 640.4 Bq/kg respectively. Gamma ray hazard indices were calculated and found they are within the world average.

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