An evaluation on in-pile behaviors of SiCf/SiC cladding under normal and accident conditions with updated FROBA-ATF code
Although there are still controversial opinions and uncertainty on application of SiCf/SiC composite cladding as next-generation cladding material for its great oxidation resistance in high temperature steam environment and other outstanding advantages, it cannot deny that SiCf/SiC cladding is a pot...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-04-01
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| Series: | Nuclear Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573320308858 |
| _version_ | 1818608142428143616 |
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| author | Ping Chen Bowen Qiu Yuanming Li Yingwei Wu Yongbo Hui Yangbin Deng Kun Zhang |
| author_facet | Ping Chen Bowen Qiu Yuanming Li Yingwei Wu Yongbo Hui Yangbin Deng Kun Zhang |
| author_sort | Ping Chen |
| collection | DOAJ |
| description | Although there are still controversial opinions and uncertainty on application of SiCf/SiC composite cladding as next-generation cladding material for its great oxidation resistance in high temperature steam environment and other outstanding advantages, it cannot deny that SiCf/SiC cladding is a potential accident tolerant fuel (ATF) cladding with high research priority and still in the engineering design stage for now. However, considering its disadvantages, such as low irradiated thermal conductivity, ductility that barely not exist, further evaluations of its in-pile behaviors are still necessary. Based on the self-developed code we recently updated, relevant thermohydraulic and mechanical models in FROBA-ATF were applied to simulate the cladding behaviors under normal and accident conditions in this paper. Even through steady-state performance analysis revealed that this kind of cladding material could greatly reduce the oxidation thickness, the thermal performance of UO2–SiC was poor due to its low in-pile thermal conductivity and creep rate. Besides, the risk of failure exists when reactor power decreased. With geometry optimization and dopant addition in pellets, the steady-state performance of UO2–SiC was enhanced and the failure risk was reduced. The thermal and mechanical performance of the improved UO2–SiC was further evaluated under Loss of coolant accident (LOCA) and Reactivity Initiated Accident (RIA) conditions. Transient results showed that the optimized ATF had better thermal performance, lower cladding hoop stress, and could provide more coping time under accident conditions. |
| first_indexed | 2024-12-16T14:37:57Z |
| format | Article |
| id | doaj.art-03f20697e6fc4a07995cc5defa4e3bd5 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-16T14:37:57Z |
| publishDate | 2021-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-03f20697e6fc4a07995cc5defa4e3bd52022-12-21T22:28:03ZengElsevierNuclear Engineering and Technology1738-57332021-04-0153412361249An evaluation on in-pile behaviors of SiCf/SiC cladding under normal and accident conditions with updated FROBA-ATF codePing Chen0Bowen Qiu1Yuanming Li2Yingwei Wu3Yongbo Hui4Yangbin Deng5Kun Zhang6Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology, And Shaanxi Engineering Research Center of Advanced Nuclear Energy, Xi’an Jiaotong University, Xi’an City, 710049, China; Science and Technology on Reactor System Design Technology Laboratory, Chengdu City, 610213, ChinaScience and Technology on Reactor System Design Technology Laboratory, Chengdu City, 610213, ChinaScience and Technology on Reactor System Design Technology Laboratory, Chengdu City, 610213, ChinaShaanxi Key Laboratory of Advanced Nuclear Energy and Technology, And Shaanxi Engineering Research Center of Advanced Nuclear Energy, Xi’an Jiaotong University, Xi’an City, 710049, China; Corresponding author.Science and Technology on Reactor System Design Technology Laboratory, Chengdu City, 610213, ChinaAdvanced Nuclear Energy Research Team, Department of Nuclear Science and Technology, Collage of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, ChinaScience and Technology on Reactor System Design Technology Laboratory, Chengdu City, 610213, ChinaAlthough there are still controversial opinions and uncertainty on application of SiCf/SiC composite cladding as next-generation cladding material for its great oxidation resistance in high temperature steam environment and other outstanding advantages, it cannot deny that SiCf/SiC cladding is a potential accident tolerant fuel (ATF) cladding with high research priority and still in the engineering design stage for now. However, considering its disadvantages, such as low irradiated thermal conductivity, ductility that barely not exist, further evaluations of its in-pile behaviors are still necessary. Based on the self-developed code we recently updated, relevant thermohydraulic and mechanical models in FROBA-ATF were applied to simulate the cladding behaviors under normal and accident conditions in this paper. Even through steady-state performance analysis revealed that this kind of cladding material could greatly reduce the oxidation thickness, the thermal performance of UO2–SiC was poor due to its low in-pile thermal conductivity and creep rate. Besides, the risk of failure exists when reactor power decreased. With geometry optimization and dopant addition in pellets, the steady-state performance of UO2–SiC was enhanced and the failure risk was reduced. The thermal and mechanical performance of the improved UO2–SiC was further evaluated under Loss of coolant accident (LOCA) and Reactivity Initiated Accident (RIA) conditions. Transient results showed that the optimized ATF had better thermal performance, lower cladding hoop stress, and could provide more coping time under accident conditions.http://www.sciencedirect.com/science/article/pii/S1738573320308858SiCf/SiC claddingFuel performance analysisNormal conditionAccident condition |
| spellingShingle | Ping Chen Bowen Qiu Yuanming Li Yingwei Wu Yongbo Hui Yangbin Deng Kun Zhang An evaluation on in-pile behaviors of SiCf/SiC cladding under normal and accident conditions with updated FROBA-ATF code Nuclear Engineering and Technology SiCf/SiC cladding Fuel performance analysis Normal condition Accident condition |
| title | An evaluation on in-pile behaviors of SiCf/SiC cladding under normal and accident conditions with updated FROBA-ATF code |
| title_full | An evaluation on in-pile behaviors of SiCf/SiC cladding under normal and accident conditions with updated FROBA-ATF code |
| title_fullStr | An evaluation on in-pile behaviors of SiCf/SiC cladding under normal and accident conditions with updated FROBA-ATF code |
| title_full_unstemmed | An evaluation on in-pile behaviors of SiCf/SiC cladding under normal and accident conditions with updated FROBA-ATF code |
| title_short | An evaluation on in-pile behaviors of SiCf/SiC cladding under normal and accident conditions with updated FROBA-ATF code |
| title_sort | evaluation on in pile behaviors of sicf sic cladding under normal and accident conditions with updated froba atf code |
| topic | SiCf/SiC cladding Fuel performance analysis Normal condition Accident condition |
| url | http://www.sciencedirect.com/science/article/pii/S1738573320308858 |
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