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http://dx.doi.org/10.7733/jnfcwt.2015.13.1.73

Performance Assessment of Low- and Intermediate-Level Radioactive Waste Disposal Facility in Korea by Using Complementary Indicator: Case Study with Radionuclide Flux  

Jung, Kang-Il (Korea Radioactive Waste Agency)
Jeong, Mi-Seon (Korea Radioactive Waste Agency)
Park, Jin Beak (Korea Radioactive Waste Agency)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.13, no.1, 2015 , pp. 73-86 More about this Journal
Abstract
The use of complimentary indicators, other than radiation dose and risk, to assess the safety of radioactive waste disposal has been discussed in a number of publications for providing the reasonable assurance of disposal safety and convincing the public audience. In this study, the radionuclide flux was selected as performance indicator to appraise the performance of engineered barriers and natural barrier in the Wolsong low- and intermediate-level waste disposal facility. Radionuclide flux showing the retention capability by each compartment of the disposal system is independent of assumptions in biosphere model and exposure pathways. The scenario considered as the normal scenario of disposal facility has been divided into intact or degraded silo concrete conditions. In the intact silo concrete, the radionuclide flux has been assessed with respect to the radionuclide retardation performance of each engineered barrier. In the degraded silo concrete, the radionuclide flux has been explored based on the performance degradation of engineered barriers and the relative significance of natural barrier quantitatively. The results can be used to optimally design the near-surface disposal facility being planned as the second project phase. In the future, additional complimentary indicators will be employed for strengthening the safety case for improving the public acceptance of low- and intermediate-level waste disposal facility.
Keywords
Safety case; Complementary indicator; Low- and intermediate level waste (LILW); Radioactive waste disposal facility; Radionuclide flux;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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