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Kim, Hee Reyoung
Liquid Metal Magnetohydrodynamics Lab/ Environmental Radiation Safety Lab
Research Interests
  • Environmental radiation safety
  • Electromagnetic pump
  • NPP D&D technology

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Evaluation of radiological safety according to accident scenarios for commercialization of spent resin mixture treatment device

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Title
Evaluation of radiological safety according to accident scenarios for commercialization of spent resin mixture treatment device
Author
Choi, Woo NyunByun, JaehoonKim, Hee Reyoung
Issue Date
2022-07
Publisher
한국원자력학회
Citation
NUCLEAR ENGINEERING AND TECHNOLOGY, v.54, no.7, pp.2606 - 2613
Abstract
Spent resin often exceeds radiation limits for safe disposal, creating a need for commercial-scale treatment techniques to reduce resin radioactivity. In this study, the radiological safety of a commercialized spent resin treatment device with a treatment capacity of 1 ton/day was evaluated. The results confirm that the device is radiologically safe in the event of an accident. This device desorbs 14C from the spent resin, allowing disposal as low-level waste instead of intermediate-level waste. The device also reduces overall waste by recycling the extracted 14C. Potential accident scenarios were explored to enable dose assessments for both internal and external exposure while preventing further spillage of the device and processing the spilled resin. The scenarios involved the development of a surface fracture on the resin mixture separator and microwave systems, which were operated under pressure and temperature of 0–6 bar and 0–150 °C, respectively. In the case of accidents with separator and microwave device, the maximum allowable working time of worker were derived, respectively, considering external and internal exposures. When wearing the respirator corresponding to APF 50, in the case of the microwave device accident scenario, the radiological safety was confirmed when the maximum worker worked within 132.1 h.
URI
https://scholarworks.unist.ac.kr/handle/201301/57164
DOI
10.1016/j.net.2022.01.025
ISSN
1738-5733
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NUE_Journal Papers
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