The increase of radiation doses due to exploration activities in Yen Phu rare earth deposit, Yen Bai province, Northern Vietnam

Le Khanh Le Khanh Phon; Phan Thien Huong; Jadwiga Pieczonka; Adam piestrzynski; Nguyen Dinh Chau; Vu Van Bich; Tran Thien Nhien; Nguyen Thai Son; Nguyen Thi Thu Duyen

doi:10.15625/1859-3097/17/4B/12735

Author affiliations

Authors

Le Khanh Le Khanh Phon Vietnam Association of Geophysicists
Phan Thien Huong Hanoi University of Mining and Geology
Jadwiga Pieczonka University of Science and Technology AGH, Krakow Poland
Adam piestrzynski University of Science and Technology AGH, Krakow Poland
Nguyen Dinh Chau University of Science and Technology AGH, Krakow Poland
Vu Van Bich Division on Radioactive and Rare-earth Minerals
Tran Thien Nhien Division on Radioactive and Rare-earth Minerals
Nguyen Thai Son Division on Radioactive and Rare-earth Minerals
Nguyen Thi Thu Duyen Hanoi University of Mining and Geology

DOI:

https://doi.org/10.15625/1859-3097/17/4B/12735

Keywords:

HREE (heavy rare earth element) deposit, radiation dose, radon concentration.

Abstract

Yen Phu rare earth deposit covering over 0.7 km2 in Yen Bai province, Northern Vietnam contains heavy elements bearing radioactive materials. The area has been studied based on data of several thousand meters of boreholes, 2000 m3 of trenches, shallow shafts, and thousands of rock samples. This article shows the results of radioactive measurements and analysis by regular grids before and after exploration activities. The investigated area has been divided into two different subunits characterized by different levels of the radiation dose. It can be observed that after the exploration process, equivalent dose increases by 1.2 mSv/y and reaches recent value of 9.9 mSv/y. This value is still below the acceptable value according to the ICRP regulations, however, it should be noted that the increase can exceed the critical value during industrial production and processing. Therefore it will be necessary to undertake investigation and implementation of radioactive monitoring system to maintain the safety for people.

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References

Kotova, V. M., Pelumxki, G. A., 2002. The researches on the radiation-ecological problems of mineral-material exploitation at deposits. Scientific Publication on The Earth, PAEH, 2002, 9th issue, pages of 15-26 (in Russian).

Roxman, G. I., Bakur, A. E., Petrova, N. V., 2012. The radiation ecology for industrial mineral materials. Moscow, 318 p (in Russian).

Pham Vu Duong, 1992. Result report of the radioactive - rare earth ore investigation at Yen Phu area. Division on Radioactive and Rare-earth Minerals.

Le Khanh Phon, Phan Thien Huong, 2016. Environmental Radiation. Construction Publishing House. Hanoi.

ICRP 1999. International Commission on Radiological Protection, Protection of the Public in Situations of Prolonged Radiation Expose. Publication 82.

Circular No 19/2012/TT-BKH dated 08/11/2012 of the Ministry of Science and Technology. Provisions on control and safety of radiation in occupational radiation doses and public radiation doses. 2012, Hanoi.

IAEA, 1996. International Basic Safety Standards for Protection against Ionizing Radiation and for the safety of Radiation Sources. Vienna.