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Analysis of Radionuclide Migration Behavior in Loess Medium

Published online by Cambridge University Press:  15 February 2011

Wang Zhiming ,
Li Shushen ,
Guo Zede ,
Zhao Yingjie ,
Li Zhentang ,
Li Shengfang ,
Tadatoshi Yamamoto ,
Shinichi Takebe ,
Hiromichi Ogawa  and
Tadao Tanaka
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Wang Zhiming
Affiliation:
China Institute for Radiation Protection P.O. Box 120 Taiyuan, Shanxi, 030006, China
Li Shushen
Affiliation:
China Institute for Radiation Protection P.O. Box 120 Taiyuan, Shanxi, 030006, China
Guo Zede
Affiliation:
China Institute for Radiation Protection P.O. Box 120 Taiyuan, Shanxi, 030006, China
Zhao Yingjie
Affiliation:
China Institute for Radiation Protection P.O. Box 120 Taiyuan, Shanxi, 030006, China
Li Zhentang
Affiliation:
China Institute for Radiation Protection P.O. Box 120 Taiyuan, Shanxi, 030006, China
Li Shengfang
Affiliation:
China Institute for Radiation Protection P.O. Box 120 Taiyuan, Shanxi, 030006, China
Tadatoshi Yamamoto
Affiliation:
Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, Japan
Shinichi Takebe
Affiliation:
Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, Japan
Hiromichi Ogawa
Affiliation:
Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, Japan
Tadao Tanaka
Affiliation:
Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, Japan
Masayumi Mukai
Affiliation:
Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, Japan
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Abstract

A five-year cooperative research program has been carried out by China Institute for Radiation Protection and Japan Atomic Energy Research Institute to develop safety assessment methodology for disposal of low level radioactive waste. Migration behavior of radionuclides 3H and 85Sr through field tests, simulation tests in the laboratory and determination of distribution coefficients is discussed and analyzed in this paper. The results show that the retardation coefficients, Rd, from field tests are about 0.08−3.3 times those from simulation tests and Rd from batch tests are 1.1−44 times those from field tests for 85Sr and loess medium. It was observed from field tests that radionuclides moved mainly downward under artificial sprinkling and a part of them moved up besides downward under natural rain condition. In addition, it was discovered that the retardation coefficient, Rd , increases with velocity of unsaturated water flow, u, in the analysis.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 1101
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

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