Methodology for risk assessment of multi-event scenarios on radioactive waste repository
Deep geological disposal, which is a permanent method that isolates a storage facility in rocks 200 to 1000 m deep underground, plays a role in safely disposing spent nuclear fuel to prevent excessive radioactive species from leaking out and its safety should be primarily proved. Risk for various ra...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Nuclear Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573324003929 |
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| author | Karyoung Choi Minseok Kim Kibeom Son Gyunyoung Heo |
| author_facet | Karyoung Choi Minseok Kim Kibeom Son Gyunyoung Heo |
| author_sort | Karyoung Choi |
| collection | DOAJ |
| description | Deep geological disposal, which is a permanent method that isolates a storage facility in rocks 200 to 1000 m deep underground, plays a role in safely disposing spent nuclear fuel to prevent excessive radioactive species from leaking out and its safety should be primarily proved. Risk for various radionuclide leakage scenarios should be calculated to be used as a safety indicator. One of the scenarios that significantly affects the safety of repository is the occurrence of external events such as an earthquake scenario. Several occurrences of such external disasters are expected over a long period of time which the safety functions of the deep disposal site must be maintained. Rather than performing a conservative single event evaluation, we expected that performing a more realistic evaluation, such as considering the number of events, is preferrable for design and operation optimization, particularly in an early project phase. This paper suggests a need for assessing multi-event scenarios and the methodology for simulation of several external disasters using earthquakes as an example. The methodology and algorithm of simulating multiple earthquakes and assessing risk distribution under those events at repository site is introduced in GoldSim software, and its results are expected to be used at simulating other event scenarios. |
| format | Article |
| id | doaj-art-945038fe2bfe4e8b9845e979204139f4 |
| institution | Kabale University |
| issn | 1738-5733 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj-art-945038fe2bfe4e8b9845e979204139f42025-01-12T05:24:37ZengElsevierNuclear Engineering and Technology1738-57332025-01-01571103145Methodology for risk assessment of multi-event scenarios on radioactive waste repositoryKaryoung Choi0Minseok Kim1Kibeom Son2Gyunyoung Heo3Department of Nuclear Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Republic of KoreaDepartment of Nuclear Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Republic of KoreaDepartment of Nuclear Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Republic of KoreaCorresponding author.; Department of Nuclear Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Republic of KoreaDeep geological disposal, which is a permanent method that isolates a storage facility in rocks 200 to 1000 m deep underground, plays a role in safely disposing spent nuclear fuel to prevent excessive radioactive species from leaking out and its safety should be primarily proved. Risk for various radionuclide leakage scenarios should be calculated to be used as a safety indicator. One of the scenarios that significantly affects the safety of repository is the occurrence of external events such as an earthquake scenario. Several occurrences of such external disasters are expected over a long period of time which the safety functions of the deep disposal site must be maintained. Rather than performing a conservative single event evaluation, we expected that performing a more realistic evaluation, such as considering the number of events, is preferrable for design and operation optimization, particularly in an early project phase. This paper suggests a need for assessing multi-event scenarios and the methodology for simulation of several external disasters using earthquakes as an example. The methodology and algorithm of simulating multiple earthquakes and assessing risk distribution under those events at repository site is introduced in GoldSim software, and its results are expected to be used at simulating other event scenarios.http://www.sciencedirect.com/science/article/pii/S1738573324003929Risk AssessmentMulti-eventEarthquakeDeep Geological Repository |
| spellingShingle | Karyoung Choi Minseok Kim Kibeom Son Gyunyoung Heo Methodology for risk assessment of multi-event scenarios on radioactive waste repository Nuclear Engineering and Technology Risk Assessment Multi-event Earthquake Deep Geological Repository |
| title | Methodology for risk assessment of multi-event scenarios on radioactive waste repository |
| title_full | Methodology for risk assessment of multi-event scenarios on radioactive waste repository |
| title_fullStr | Methodology for risk assessment of multi-event scenarios on radioactive waste repository |
| title_full_unstemmed | Methodology for risk assessment of multi-event scenarios on radioactive waste repository |
| title_short | Methodology for risk assessment of multi-event scenarios on radioactive waste repository |
| title_sort | methodology for risk assessment of multi event scenarios on radioactive waste repository |
| topic | Risk Assessment Multi-event Earthquake Deep Geological Repository |
| url | http://www.sciencedirect.com/science/article/pii/S1738573324003929 |
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