Browse > Article
http://dx.doi.org/10.7733/jnfcwt.2014.12.4.315

Development of Two-Dimensional Near-field Integrated Performance Assessment Model for Near-surface LILW Disposal  

Bang, Je Heon (Korea Radioactive Waste Agency)
Park, Joo-Wan (Korea Radioactive Waste Agency)
Jung, Kang Il (Korea Radioactive Waste Agency)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.12, no.4, 2014 , pp. 315-334 More about this Journal
Abstract
Wolsong Low- and Intermediate-level radioactive waste (LILW) disposal center has two different types of disposal facilities and interacts with the neighboring Wolsong nuclear power plant. These situations impose a high level of complexity which requires in-depth understanding of phenomena in the safety assessment of the disposal facility. In this context, multidimensional radionuclide transport model and hydraulic performance assessment model should be developed to identify more realistic performance of the complex system and reduce unnecessary conservatism in the conventional performance assessment models developed for the $1^{st}$ stage underground disposal. In addition, the advanced performance assessment model is required to calculate many cases to treat uncertainties or study parameter importance. To fulfill the requirements, this study introduces the development of two-dimensional integrated near-field performance assessment model combining near-field hydraulic performance assessment model and radionuclide transport model for the $2^{nd}$ stage near-surface disposal. The hydraulic and radionuclide transport behaviors were evaluated by PORFLOW and GoldSim. GoldSim radionuclide transport model was verified through benchmark calculations with PORFLOW radionuclide transport model. GoldSim model was shown to be computationally efficient and provided the better understanding of the radionuclide transport behavior than conventional model.
Keywords
LILW; Near-surface disposal; Near-field; Hydraulic performance assessment; Two-dimensional radionuclide transport; GoldSim; PORFLOW;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Korea Radioactive Waste Agency(KORAD), Safety Case Program, Construction and Operation Licensing Following-up Report (in press) (2014).
2 C.W. Jeong, H.Y. Jeong, J.Y. Park, and E.J. Seo, "Tasks for developing Gyeongju LILW disposal and securing its safety", Proceedings of the Korean Radioact. Waste Soc., 165-166 (2009).
3 Hansen, Performance Assessment Methodologies in Application to Guide the Development of the Safety Case, TREATMENT OF MODEL UNCERTAINTY DELIVERABLE, D-No: D2.2.B.4 (2010).
4 Korea Radioactive Waste Agency(KORAD), Preliminary Safety Assessment Report for 2nd Stage Near-Surface Disposal Facility(in Korean) (2013).
5 D. Jacques, Long-term Evolution of the Multi-layer Cover; Project Near Surface Disposal of Category A Waste at Dessel, ONDRAF/NIRAS, NIROND-TR 2010-03 E (2010).
6 K.I. Jung, J.H. Bang, J.B. Park, and J.H. Yoon, "Concrete Degradation Comparison of Computer Programs for Post-Closure Safety Assessment of Wolsong Lowand Intermediate-Level Radioactive Waste Disposal Facility",Journal of Nuclear Fuel Cycle and Waste Technology, 11(4), 311-324 (2013).   과학기술학회마을   DOI   ScienceOn
7 GoldSim, GoldSim Contaminant Transport Module, User's Guide, Version 6.4, GoldSimTechnology Group (2014).
8 W. Wacquier, Summary of the Safety Report for the Surface Repository of Category A Waste in Dessel, ONDRAF/NIRAS, NIROND-TR 2012-17 N (2012).