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http://dx.doi.org/10.7733/jnfcwt.2017.15.3.219

Simulation of Unsaturated Fluid Flow on the 2nd Phase Facility at the Wolsong LILW Disposal Center  

Ha, Jaechul (Korea Radioactive Waste Agency (KORAD))
Lee, Jeonghwan (Korea Radioactive Waste Agency (KORAD))
Yoon, Jeonghyoun (Korea Radioactive Waste Agency (KORAD))
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.15, no.3, 2017 , pp. 219-230 More about this Journal
Abstract
This study was conducted to predict and evaluate the uncertainty of safety after closure of the second phase surface disposal facility of the Gyeongju intermediate and low level repository in Korea. In this study, four scenarios are developed considering both intact and degraded states of multi-layered covers and disposal containers; also, the fluid flow by a rainfall into the disposal facility is simulated. The rainfall conditions are implemented based on the monthly average data of the past 30 years (1985~2014); the simulation period is 300 years, the management period regulated by institutional provisions. As a result of the evaluation of the basic scenario, in which the integrity of both of the containers and the covers is maintained, it was confirmed that penetration of rainfall does not completely saturate the inside of the disposal facility. It is revealed that the multiple cover layers and concrete containers effectively play the role of barrier against the permeation of rainfall.
Keywords
Multi-layers cover; Engineered barrier system; Fluid flow; LILW disposal center;
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Times Cited By KSCI : 2  (Citation Analysis)
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