Assessment of the potential radiation hazard of the Dehmoy tailings pond (Tajikistan) for the population living around it
The paper presents results of radiation monitoring of the Dehmoy tailings pond and the nearest inhabited locality, Goziyon village. It is shown that the average gamma dose rate on the surface of Dehmoy tailings pond reaches 20 μSv/h, density of radon flux from the surface reaches 65 Bq/(m2∙s), and t...
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Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev
2019-03-01
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| Series: | Радиационная гигиена |
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| Online Access: | https://www.radhyg.ru/jour/article/view/600 |
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| author | Kh. M. Nazarov K. A. Ermatov S. M. Bakhronov S. G. Mukhamedova U. M. Mirsaidov |
| author_facet | Kh. M. Nazarov K. A. Ermatov S. M. Bakhronov S. G. Mukhamedova U. M. Mirsaidov |
| author_sort | Kh. M. Nazarov |
| collection | DOAJ |
| description | The paper presents results of radiation monitoring of the Dehmoy tailings pond and the nearest inhabited locality, Goziyon village. It is shown that the average gamma dose rate on the surface of Dehmoy tailings pond reaches 20 μSv/h, density of radon flux from the surface reaches 65 Bq/(m2∙s), and the outdoor radon concentration at the Dehmoy tailings pond varies from 200 to 1000 Bq/m3. It was found that the activity concentration of 238U in the tailing material reaches 980 Bq/kg and the activity concentration of 226Ra reaches 7620 Bq/kg. Potential doses for three hypothetical groups of the population living in the village of Goziyon were assessed and the following sources and ways of exposure were taken into account: external gamma radiation due to soil contamination; internal exposure due to inhalation of 222Rn and its progeny, as well as longlived radionuclides with aerosols from atmospheric air; internal exposure due to ingestion of soil particles. The hypothetical doses range from 0.4 to 17.0 mSv/year. The most significant contributors to the dose are the external gamma radiation and the internal exposure due to inhalation of 222Rn and its progeny. The contribution of internal exposure due to the ingestion of soil particles in the case of working in windy conditions and the lift of dust from the surface of the tailings pond can also be significant. The hypothetical annual doses to three hypothetical groups of the population can be considered as the basis for estimating the safe working time at the tailings pond during its rehabilitation. The calculated dose estimate (up to 17 mSv/year) is rather high and unacceptable compared to the dose limit for the population of 1 mSv/year above the background level. |
| format | Article |
| id | doaj-art-6f723d8f03324fa187129e27c4a8819e |
| institution | DOAJ |
| issn | 1998-426X |
| language | English |
| publishDate | 2019-03-01 |
| publisher | Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev |
| record_format | Article |
| series | Радиационная гигиена |
| spelling | doaj-art-6f723d8f03324fa187129e27c4a8819e2025-08-20T03:23:27ZengSaint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. RamzaevРадиационная гигиена1998-426X2019-03-0112111512110.21514/1998-426X-2019-12-1-115-121573Assessment of the potential radiation hazard of the Dehmoy tailings pond (Tajikistan) for the population living around itKh. M. Nazarov0K. A. Ermatov1S. M. Bakhronov2S. G. Mukhamedova3U. M. Mirsaidov4Nuclear and Radiation Safety Agency of Academy of Sciences of the Republic of Tajikistan, DushanbeNuclear and Radiation Safety Agency of Academy of Sciences of the Republic of Tajikistan, DushanbeNuclear and Radiation Safety Agency of Academy of Sciences of the Republic of Tajikistan, DushanbeFirst Moscow State University after I.M. Sechenov of the Ministry of HealthcareNuclear and Radiation Safety Agency of Academy of Sciences of the Republic of Tajikistan, DushanbeThe paper presents results of radiation monitoring of the Dehmoy tailings pond and the nearest inhabited locality, Goziyon village. It is shown that the average gamma dose rate on the surface of Dehmoy tailings pond reaches 20 μSv/h, density of radon flux from the surface reaches 65 Bq/(m2∙s), and the outdoor radon concentration at the Dehmoy tailings pond varies from 200 to 1000 Bq/m3. It was found that the activity concentration of 238U in the tailing material reaches 980 Bq/kg and the activity concentration of 226Ra reaches 7620 Bq/kg. Potential doses for three hypothetical groups of the population living in the village of Goziyon were assessed and the following sources and ways of exposure were taken into account: external gamma radiation due to soil contamination; internal exposure due to inhalation of 222Rn and its progeny, as well as longlived radionuclides with aerosols from atmospheric air; internal exposure due to ingestion of soil particles. The hypothetical doses range from 0.4 to 17.0 mSv/year. The most significant contributors to the dose are the external gamma radiation and the internal exposure due to inhalation of 222Rn and its progeny. The contribution of internal exposure due to the ingestion of soil particles in the case of working in windy conditions and the lift of dust from the surface of the tailings pond can also be significant. The hypothetical annual doses to three hypothetical groups of the population can be considered as the basis for estimating the safe working time at the tailings pond during its rehabilitation. The calculated dose estimate (up to 17 mSv/year) is rather high and unacceptable compared to the dose limit for the population of 1 mSv/year above the background level.https://www.radhyg.ru/jour/article/view/600radiation monitoringtailings pondgamma dose rateactivityconcentrationradionuclideuraniumradiumradonannual dosehypothetical groupdensity of radon fluxairsoil |
| spellingShingle | Kh. M. Nazarov K. A. Ermatov S. M. Bakhronov S. G. Mukhamedova U. M. Mirsaidov Assessment of the potential radiation hazard of the Dehmoy tailings pond (Tajikistan) for the population living around it Радиационная гигиена radiation monitoring tailings pond gamma dose rate activity concentration radionuclide uranium radium radon annual dose hypothetical group density of radon flux air soil |
| title | Assessment of the potential radiation hazard of the Dehmoy tailings pond (Tajikistan) for the population living around it |
| title_full | Assessment of the potential radiation hazard of the Dehmoy tailings pond (Tajikistan) for the population living around it |
| title_fullStr | Assessment of the potential radiation hazard of the Dehmoy tailings pond (Tajikistan) for the population living around it |
| title_full_unstemmed | Assessment of the potential radiation hazard of the Dehmoy tailings pond (Tajikistan) for the population living around it |
| title_short | Assessment of the potential radiation hazard of the Dehmoy tailings pond (Tajikistan) for the population living around it |
| title_sort | assessment of the potential radiation hazard of the dehmoy tailings pond tajikistan for the population living around it |
| topic | radiation monitoring tailings pond gamma dose rate activity concentration radionuclide uranium radium radon annual dose hypothetical group density of radon flux air soil |
| url | https://www.radhyg.ru/jour/article/view/600 |
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