Study on Release and Migration of Radionuclides under the Small Break Loss of Coolant Accident in a Marine Reactor
Using severe accident analysis program MELCOR, the small break loss of coolant accident (SBLOCA) analysis model was established for a marine reactor. The release and migration of radionuclides were analyzed during a severe accident induced by SBLOCA. The analysis of the hydrogen source term release...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2021/6635950 |
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| author | Zhao Fang Zou Shuliang Liu Zejun Xu Tao Xu Shoulong Huang Yan Feng Jinjun |
| author_facet | Zhao Fang Zou Shuliang Liu Zejun Xu Tao Xu Shoulong Huang Yan Feng Jinjun |
| author_sort | Zhao Fang |
| collection | DOAJ |
| description | Using severe accident analysis program MELCOR, the small break loss of coolant accident (SBLOCA) analysis model was established for a marine reactor. The release and migration of radionuclides were analyzed during a severe accident induced by SBLOCA. The analysis of the hydrogen source term release showed that the maximum hydrogen release amount was 248.567 kg, and the hydrogen release amount accounted for less than 4% of the air volume. So, there would be no danger of hydrogen explosion accidents. The research mainly focused on the behaviors of the release, the transport, the retention, and the final distribution of inert gases represented by Xe, volatile gases represented by CsI, and nonvolatile nuclides represented by Ba. The results showed that the reactor core exposed completely with a lagging by 510 s and the initial release time of nuclides was lagged by 1916 s. The release shares of Xe in the primary circuit system, the containment, and the environment were 0.013%, 0.06%, and 32.71%, respectively. Also, Ba shared 0.016%, 0.0032%, and 3.28%, respectively, and CsI shared 0.0145%, 0.0012%, and 2.845%, respectively. |
| format | Article |
| id | doaj-art-1a031e0650f54a7fb5b45ca6123b10bc |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-1a031e0650f54a7fb5b45ca6123b10bc2025-02-03T01:24:12ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832021-01-01202110.1155/2021/66359506635950Study on Release and Migration of Radionuclides under the Small Break Loss of Coolant Accident in a Marine ReactorZhao Fang0Zou Shuliang1Liu Zejun2Xu Tao3Xu Shoulong4Huang Yan5Feng Jinjun6School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, Hunan, ChinaSchool of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, Hunan, ChinaNuclear and Radiation Safety Center in China, Beijing 100082, ChinaScience and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, Sichuan, ChinaSchool of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, Hunan, ChinaSchool of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, Hunan, ChinaNuclear and Radiation Safety Center in China, Beijing 100082, ChinaUsing severe accident analysis program MELCOR, the small break loss of coolant accident (SBLOCA) analysis model was established for a marine reactor. The release and migration of radionuclides were analyzed during a severe accident induced by SBLOCA. The analysis of the hydrogen source term release showed that the maximum hydrogen release amount was 248.567 kg, and the hydrogen release amount accounted for less than 4% of the air volume. So, there would be no danger of hydrogen explosion accidents. The research mainly focused on the behaviors of the release, the transport, the retention, and the final distribution of inert gases represented by Xe, volatile gases represented by CsI, and nonvolatile nuclides represented by Ba. The results showed that the reactor core exposed completely with a lagging by 510 s and the initial release time of nuclides was lagged by 1916 s. The release shares of Xe in the primary circuit system, the containment, and the environment were 0.013%, 0.06%, and 32.71%, respectively. Also, Ba shared 0.016%, 0.0032%, and 3.28%, respectively, and CsI shared 0.0145%, 0.0012%, and 2.845%, respectively.http://dx.doi.org/10.1155/2021/6635950 |
| spellingShingle | Zhao Fang Zou Shuliang Liu Zejun Xu Tao Xu Shoulong Huang Yan Feng Jinjun Study on Release and Migration of Radionuclides under the Small Break Loss of Coolant Accident in a Marine Reactor Science and Technology of Nuclear Installations |
| title | Study on Release and Migration of Radionuclides under the Small Break Loss of Coolant Accident in a Marine Reactor |
| title_full | Study on Release and Migration of Radionuclides under the Small Break Loss of Coolant Accident in a Marine Reactor |
| title_fullStr | Study on Release and Migration of Radionuclides under the Small Break Loss of Coolant Accident in a Marine Reactor |
| title_full_unstemmed | Study on Release and Migration of Radionuclides under the Small Break Loss of Coolant Accident in a Marine Reactor |
| title_short | Study on Release and Migration of Radionuclides under the Small Break Loss of Coolant Accident in a Marine Reactor |
| title_sort | study on release and migration of radionuclides under the small break loss of coolant accident in a marine reactor |
| url | http://dx.doi.org/10.1155/2021/6635950 |
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