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http://dx.doi.org/10.7733/jkrws.2011.9.2.73

A Study on the Radiation Source Effect to the Radiation Shielding Analysis for a Spent-Fuel Cask Design with Burnup-Credit  

Kim, Kyung-O (RADCORE Co., Ltd.)
Kim, Soon-Young (RADCORE Co., Ltd.)
Ko, Jae-Hoon (Korea Nuclear Engineering & Service Corp.)
Lee, Gang-Ug (Korea Nuclear Engineering & Service Corp.)
Kim, Tae-Man (Korea Radioactive waste Management Corp.)
Yoon, Jeong-Hyun (Korea Radioactive waste Management Corp.)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.9, no.2, 2011 , pp. 73-80 More about this Journal
Abstract
The radiation shielding analysis for a Burnup-credit (BUC) cask designed under the management of Korea Radioactive Waste Management Corporation (KRMC) was performed to examine the contribution of each radiation source affecting dose rate distribution around the cask. Various radiation sources, which contain neutron and gamma-ray sources placed in active fuel region and the activation source, and imaginary nuclear fuel were all considered in the MCNP calculation model to realistically simulate the actual situations. It was found that the maximum external and surface dose rates of the spent fuel cask were satisfied with the domestic standards both in normal and accident conditions. In normal condition, the radiation dose rate distribution around the cask was mainly influenced by activation source ($^{60}Co$ radioisotope); in another case, the neutron emitted in active fuel region contributed about 90% to external dose rate at 1m distance from side surface of the cask. Besides, the contribution level of activation source was dramatically increased to the dose rates in top and bottom regions of the cask. From this study, it was recognized that the detailed investigation on the radiation sources should be performed conservatively and accurately in the process of radiation shielding analysis for a BUC cask.
Keywords
Spent Nuclear Fuel; Transportation/Storage System; Burnup Credit; Radiation Shielding;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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