Environmental impact of radionuclide migration in groundwater from a low-intermediate level radioactive waste repository

The radionuclide migration from a certain Chinese repository withlow-intermediate level radioactive solid waste is studied. The migration in groundwater is analyzed and computed in detail. Under presumption of normal releasing, or the bottom of the repository has been marinated for one month with precipitation reaching 600 mm once and a 6m aerated zone exists, a prediction for 7 radionuclides is conducted. It shows that the aerated zone is the primary barrier for migration. The migration for radionuclides 60Co, 137Cs, 90Sr, 63Ni, etc. will be retarded in it within 500 years. The concentration of 239Pu will be decreased by amount of 6 order. Only 3H and 14C can migrate through the aerated zone. The radionuclides that go through the aerated zone and enter the aquifer will exist in spring, stream and sea. Based on this, the intake dose by residents in different age group resulting from drinking contaminated spring water, eating seafood is calculated. The results showed that the impact of the repository to the key resident group is lower than the limit in national repository regulation standard. This complies with the repository management target.

作 者： WANG Jin-sheng YANG Zhi-feng LI Shu-shen WANG Zhi-ming   作者單位： WANG Jin-sheng,YANG Zhi-feng(Institute of Environmental Sciences, Beijing Normal University,State Key Joint Laboratory of Environmental Simulation and Pollution Control,)

LI Shu-shen,WANG Zhi-ming(China Institute for Radiation Protection,) 

刊 名： 環境科學學報(英文版)  ISTIC SCI 英文刊名： ENVIRON MENTAL SCIENCES  年，卷(期)： 2001 13(2)  分類號： X591  關鍵詞：  

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