Radon migration in the area around the coal mine during closing process

Wysocka, M.; Skubacz, Krystian; Chmielewska, Izabela; Urban, Paweł; Bonczyk, Michał

doi:10.1016/j.coal.2019.103253

Cited by 25 publications

(11 citation statements)

References 14 publications

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“…The formation and existence of large underground airy spaces, either as a result of natural tectonic and weathering processes (cracks, canals, caves), or anthropogenic activities (mining works, cellars, storages), can create good preconditions for accumulation of radon by its emanation from surrounding solid structural rock materials. It is documented by a number of scientific studies that deal with the evaluation of radiation load from radon exposure in tourist and healing-oriented caves (Szerbin, 1996;Thinová and Burian, 2008;Smetanová et al, 2014Smetanová et al, , 2020 or in operating mining works (Ayres da Silva et al, 2018), alternatively also in mining works which are in the state of activity suppression or liquidation (Wysocka et al, 2018). Health affecting radon accumulation occurs in these spaces mostly under the conditions of sufficient amount of uranium concentration in the surrounding geological materials (rocks) and media (underground water) and sufficient hermeticity of the underground space.…”

Section: Discussionmentioning

confidence: 99%

“…This contribution is focused on the evaluation of the application of only one of the mentioned geophysical research methods -to assess the options of soil radon emanometry during the surface identification of underground mining corridors in theČáry location. The radon emission problematic of the stoping ground mining areas in the process of their stabilization is the study subject for two reasons -in regards to population protection from radon risks, and for monitoring the overlain spaces sinking processes (Wysocka et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Surface identification of undermined spaces with the use of soil radon emanometry

Andrássy

Mojzeš

Nogová

et al. 2021

Contrib. Geophys. Geod.

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Several surface geophysical methods were used to study the displays of undermined spaces in their physical fields and to try to distinguish undermined from non-undermined parts of underground mining area. The studied area of the Čáry lignite mine in the Western Slovakia represents an actively subsided place with high risk to the population. Despite very low radioactivity and relatively high gas permeability of building geological formations, the results of soil radon emanometry show the possibility of radon gas accumulation inside the undermined spaces, but their permanent subsidence causes loosing of overlying material and escape of radon gas. The boundaries (edges) of undermined and sunken areas were identified as the only places with increased values of 222Rn activity, probably due to the presence of vertical supporting mine walls allowing radon gas accumulation and upward movement. Thus, the soil radon emanometry clearly indicates the borders between undermined or sunken and non-undermined parts.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surface identification of undermined spaces with the use of soil radon emanometry

Andrássy

Mojzeš

Nogová

et al. 2021

Contrib. Geophys. Geod.

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“…Studies of exposed miners have consistently found an association between radon and lung cancer. According to the World Health Organization (WHO), a statistically significant increase in the risk of lung cancer occurs as a result of prolonged exposure to radon when its concentration is at 100 Bq/m 3 , and increases by 16% per every 100 Bq/m 3 (Wysocka et al, 2019). Workers who continuously work at coal mining sites can have an annual dose exceeding the limit set by ICRP publication 103, with a dose limit value that can be accepted by non-radiation workers who are part of the general public is 1 mSv/year (ICRP, 2007(ICRP, , 2014(ICRP, , 2020.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Natural Radioactivity Concentration and Radiological Risk in Tanjung Enim’s Coal Mine, South Sumatra Indonesia

Ramadhany

Wijaya²,

Muharini

2022

Preprint

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Environmental radioactivity analysis has been carried out to determine the level of environmental radioactivity and the potential radiological hazards at Tanjung Enim’s coal mine. Gamma spectroscopy method has been carried out to identify radionuclides and their types of activity. The results of radionuclide concentration are used to determine the radiological hazard index and become input data for the Residual Radioactivity Onsite 7.2 application to determine the dose rate and long-term cancer potential received by workers in coal mines. The results obtained for the average concentration of radionuclide activity in coal samples are 226Ra, 232Th, and 40K are 72.468 Bq/kg, 86.905 Bq/kg, and 1802.049 Bq/kg, respectively. While the soil samples 226Ra, 232Th, and 40K respectively 79.205 Bq/kg, 100.209 Bq/kg, and 1443.275 Bq/kg. The radionuclide concentrations of both samples exceeded the UNSCEAR and worldwide reported averages for coal and soil. The average radiological hazard index for coal samples, namely Raeq, Hin, and Hex, was 335.500 Bq/kg, 1.102, 0.906, respectively. While the soil samples were 333.636 Bq/kg, 1.115, and 0.901, respectively. The index parameter is already lower than the UNSCEAR recommendation except for Hin, so there is a potential radiological hazard in internal pathways such as respiratory and digestive organs for mining workers. The total annual effective dose rate based on 5 RESRAD-Onsite 7.2 pathways, namely external gamma, inhalation, radon, soil ingestion, and drinking water, is 1.675 mSv/year, exceeding the dose limits determined by ICRP, 1 mSv/year. The ELCR is 6.625×10-3 which exceeds the UNSCEAR recommendation, 2.4×10-4. Based on the results, it is necessary to intervene in the mining environment of the Tanjung Enim’s coal mine.

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“…Studies of exposed miners have consistently found an association between radon and lung cancer. According to the World Health Organization (WHO), a statistically signi cant increase in the risk of lung cancer occurs as a result of prolonged exposure to radon when its concentration is at 100 Bq/m 3 , and increases by 16% per every 100 Bq/m 3 (Wysocka et al, 2019). Workers who continuously work at coal mining sites can have an annual dose exceeding the limit set by ICRP publication 103, with a dose limit value that can be accepted by non-radiation workers who are part of the general public is 1 mSv/year (ICRP, 2007(ICRP, , 2014(ICRP, , 2020.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Natural Radioactivity Concentration and Radiation Dose in Tanjung Enim’s Coal Mine, South Sumatra Indonesia

Ramadhany

Wijaya

Muharini

2022

Preprint

View full text Add to dashboard Cite

Environmental radioactivity analysis has been carried out to determine the level of environmental radioactivity and the potential radiological hazards at Tanjung Enim’s coal mine. Gamma spectroscopy method has been carried out to identify radionuclides and their types of activity. The results of radionuclide concentration are used to determine the radiological hazard index and become input data for the Residual Radioactivity Onsite 7.2 application to determine the dose rate and long-term cancer potential received by workers in coal mines. The results obtained for the average concentration of radionuclide activity in coal samples are 226Ra, 232Th, and 40K are 72.468 Bq/kg, 86.905 Bq/kg, and 1802.049 Bq/kg, respectively. While the soil samples 226Ra, 232Th, and 40K respectively 79.205 Bq/kg, 100.209 Bq/kg, and 1443.275 Bq/kg. The radionuclide concentrations of both samples exceeded the UNSCEAR and worldwide reported averages for coal and soil. The average radiological hazard index for coal samples, namely Raeq, Hin, and Hex, was 335.500 Bq/kg, 1.102, 0.906, respectively. While the soil samples were 333.636 Bq/kg, 1.115, and 0.901, respectively. The index parameter is already lower than the UNSCEAR recommendation except for Hin, so there is a potential radiological hazard in internal pathways such as respiratory and digestive organs for mining workers. The total annual effective dose rate based on 5 RESRAD-Onsite 7.2 pathways, namely external gamma, inhalation, radon, soil ingestion, and drinking water, is 1.675 mSv/year, exceeding the dose limits determined by ICRP, 1 mSv/year. The ELCR is 6.625×10− 3 which exceeds the UNSCEAR recommendation, 2.4×10− 4. Based on the results, it is necessary to intervene in the mining environment of the Tanjung Enim’s coal mine.

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Radon migration in the area around the coal mine during closing process

Cited by 25 publications

References 14 publications

Surface identification of undermined spaces with the use of soil radon emanometry

Surface identification of undermined spaces with the use of soil radon emanometry

Assessment of Natural Radioactivity Concentration and Radiological Risk in Tanjung Enim’s Coal Mine, South Sumatra Indonesia

Assessment of Natural Radioactivity Concentration and Radiation Dose in Tanjung Enim’s Coal Mine, South Sumatra Indonesia

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