scholarly journals GEOGRAPHIC VARIATION IN RADON FLUX DENSITY IN TERRITORY UNDERGROUND MINES

2020 ◽  
pp. 93-97
Author(s):  
T.V. Leshukov ◽  
K.V. Legoshchin ◽  
A.V. Larionov
Keyword(s):  
Flux Density ◽  
Geographic Variation ◽  
Underground Mines ◽  
Radon Flux

scholarly journals The Assessment of Radon Emissions as Results of the Soil Technogenic Disturbance

2020 ◽  
Vol 17 (24) ◽  
pp. 9268
Author(s):  
Timofey Leshukov ◽  
Aleksey Larionov ◽  
Konstantin Legoshchin ◽  
Yuriy Lesin ◽  
Svetlana Yakovleva
Keyword(s):  
Flux Density ◽  
Coal Mining ◽  
Underground Mining ◽  
Residential Buildings ◽  
Indoor Radon ◽  
Underground Mines ◽  
Control Group ◽  
Case Group ◽  
Exposure Level ◽  
Radon Flux

222Rn is a specific indoor-type pollutant that represents a primary radiological hazard as a main source of ionizing radiation (IR) for humans. Coal mining creates new sources of gas that are formed over mines. This process can significantly increase the density of radon flux. Therefore, the concentration of radon in a room can increase. We investigated the territory of the Leninsk-Kuznetsky district of the Kemerovo region, which is subject to underground mining. Two groups of residential locations and measuring points of radon flux density were selected to identify the higher emanation relationship of radon and mining-affected areas. The first group (Case group) included subjects located within the territory of the underground mine; the other (Control group) included subjects in an area without mining. Radon flux density in coal mining areas was significantly higher than in the rest of the territory; moreover, the percentage of values in the Case group that had a radon flux density above 80 mBq·m−2·s−1 was 64.53%. For the Case group, 20.62% of residential buildings had a radon concentration above 200 Bq/m3. For the studied area, the radon flux density correlates positively (r = 0.79, p = 0.002) with indoor radon. Additional clastogenic/aneugenic effects are also found in dwellings with increased volume activity of radon (VAR) within the territories of underground mines. Ring chromosomes are positively correlated with radon levels in smoker groups but not in non-smokers. An increased frequency of binucleated (BN) cells with micronuclei (MN) is also positively correlated with VAR regardless of smoking status. It has been concluded that reducing the total exposure level of a population to radon can be achieved by monitoring areas with underground mines where radon is emitted heavily.

Status and development prospects of standard means for reproducing units of volumetric activity of radon and thoron and radon flux density from the soil surface

2020 ◽  
pp. 69-73
Author(s):  
S.G. Birjukov ◽  
O.I. Kovalenko ◽  
A.A. Orlov
Keyword(s):  
Flux Density ◽  
Soil Surface ◽  
National Standards ◽  
Measuring Instruments ◽  
Volumetric Activity ◽  
Standard Means ◽  
Radon Flux ◽  
Technical Solutions ◽  
Development Prospects ◽  
Physical Principles

The approach to creating standard means for reproducing units of volumetric activity of radon and thoron and flux density of radon from the soil surface is described based on the physical principles of reproducing these units of quantities and using as technical means for reproducing bubblers with a radioactive solution of radium salt, reference capacities of known volume, emanation chambers for generation of a toron, a gamma spectrometer with a semiconductor detector from highly pure germanium and radon radiometers. Reproduction consists in the physical realization of units in accordance with their definition as applied to the formation of radon and thoron in the radioactive rows of radium and thorium. The proposed approach will allow to determine the structural, structural and other technical solutions of standard measuring instruments, as well as specific techniques and methods of working with them. The creation of standard tools and technologies for reproducing units of volumetric activity of radon and thoron and the density of radon flux from the soil surface will ensure the unity and reliability of measurements in the field of ionizing radiation, traceability of units and bringing the characteristics of national standards in line with world achievements.

scholarly journals Modeling Radon Flux Density from the Earth's Surface

2006 ◽  
Vol 43 (4) ◽  
pp. 479-482 ◽  
Author(s):  
Weihai ZHUO ◽  
Takao IIDA ◽  
Masahide FURUKAWA
Keyword(s):  
Flux Density ◽  
Radon Flux

Estimating the amount and distribution of radon flux density from the soil surface in China

2008 ◽  
Vol 99 (7) ◽  
pp. 1143-1148 ◽  
Author(s):  
Weihai Zhuo ◽  
Qiuju Guo ◽  
Bo Chen ◽  
Guan Cheng
Keyword(s):  
Flux Density ◽  
Soil Surface ◽  
Radon Flux

Using SSNTD Technique to Assess Radon Flux Density in Liquid Cleaning Materials Samples Available in Iraqi Pharmacies and Markets

2017 ◽  
Vol 10 (8) ◽  
pp. 2456
Author(s):  
Ali Abid Abojassim ◽  
Hussien Abid Ali Bakir ◽  
Mokhalad Ali Zbalh ◽  
Ban Ali Al-Ruwaishidi
Keyword(s):  
Flux Density ◽  
Radon Flux

Radon Impact at a Remediated Uranium Mine Site in Japan

2010 ◽  
Author(s):  
Yuu Ishimori
Keyword(s):  
Flux Density ◽  
Background Level ◽  
Waste Rock ◽  
Uranium Mine ◽  
Remedial Action ◽  
Natural Background ◽  
Mine Site ◽  
Radon Flux ◽  
Natural Background Level ◽  
Radon Concentrations

This paper mainly illustrates the radon impact of the closed uranium mine site remediated in 2007. The site remediated is the waste rock site located on the steep slope of a hill about 1.5 km upstream from a residential area along a main ravine. Major remedial action was to cover these waste rock yards with weathering granite soil. The radon flux density after remediation was intended to be 0.1 Bqm−2s−1 in consideration with the natural background level around Ningyo-toge because there is no value of radon flux density regulated in Japan. Our action decreased the radon concentration in the site to natural background level, approximately from 10 to 40 Bqm−3, although relatively high concentration in excess of 100 Bqm−3 was observed before remediation. On the other hand, our action did not decrease the radon concentrations around the site in general. This fact proved that the limited source such as waste rocks affected the radon concentrations at neighboring area only. The similar tendencies were also observed in other environmental data such as radon progeny concentrations. In conclusion, these findings proved that our remedial action was successful against radon. This fact will lead to more reasonable action plans for other closed mine sites.

Calibration system for measuring the radon flux density

2015 ◽  
Vol 164 (4) ◽  
pp. 582-586 ◽  
Author(s):  
A. Onishchenko ◽  
M. Zhukovsky ◽  
V. Bastrikov
Keyword(s):  
Flux Density ◽  
Calibration System ◽  
Radon Flux
Sign in / Sign up

Export Citation Format

Share Document