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http://dx.doi.org/10.7733/jnfcwt.2017.15.3.239

Review of Site Characterization Methodology for Deep Geological Disposal of Radioactive Waste  

Park, Kyung-Woo (Korea Atomic Energy Research Institute)
Kim, Kyung-Su (Korea Atomic Energy Research Institute)
Koh, Yong-Kwon (Korea Atomic Energy Research Institute)
Jo, Yeonguk (Korea Atomic Energy Research Institute)
Ji, Sung-Hoon (Korea Atomic Energy Research Institute)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.15, no.3, 2017 , pp. 239-256 More about this Journal
Abstract
In the process of site selection for a radioactive waste disposal, site characterization must be carried out to obtain input parameters to assess the safety and feasibility of deep geological repository. In this paper, methodologies of site characterization for radioactive waste disposal in Korea were suggested based on foreign cases of site characterization. The IAEA recommends that site characterization for radioactive waste disposal should be performed through stepwise processes, in which the site characterization period is divided into preliminary and detailed stages, in sequence. This methodology was followed by several foreign countries for their geological disposal programs. General properties related to geological environments were obtained at the preliminary site characterization stage; more detailed site characteristics were investigated during the detailed site characterization stage. The results of investigation of geology, hydro-geology, geochemistry, rock mechanics, solute transport and thermal properties at a site have to be combined and constructed in the form of a site descriptive model. Based on this site descriptive model, the site characteristics can be evaluated to assess suitability of site for radioactive waste disposal. According to foreign site characterization cases, 7 or 8 years are expected to be needed for site characterization; however, the time required may increase if the no proper national strategy is provided.
Keywords
Radioactive waste disposal; Preliminary site characterization; Detailed site characterization; Site descriptive model;
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