Effect of KLT-40S Fuel Assembly Design on Burnup Characteristics
The KLT-40S is a small modular reactor developed by Russia based on the KLT-40 reactor with two fuel assembly designs: a four-ring and a five-ring. Few studies have been published on fuel assembly and power-flattening designs for the KLT-40S. In this paper, the effects of different fuel assembly des...
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MDPI AG
2023-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/8/3364 |
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| author | Zedong Zhou Jinsen Xie Nianbiao Deng Pengyu Chen Zhiqiang Wu Tao Yu |
| author_facet | Zedong Zhou Jinsen Xie Nianbiao Deng Pengyu Chen Zhiqiang Wu Tao Yu |
| author_sort | Zedong Zhou |
| collection | DOAJ |
| description | The KLT-40S is a small modular reactor developed by Russia based on the KLT-40 reactor with two fuel assembly designs: a four-ring and a five-ring. Few studies have been published on fuel assembly and power-flattening designs for the KLT-40S. In this paper, the effects of different fuel assembly designs on burnup and power flattening are investigated. This paper compares the effects of the two fuel assembly designs of the KLT-40S on its burnup characteristics, analyzes the effects of fuel rod diameter on burnup characteristics, and conducts a computational study on the ideal power-flattening design. The results show that the five-ring fuel assembly design has better burnup characteristics than the four-ring fuel assembly design. At a fuel rod diameter of 0.62 cm, the optimal burnup lattice is obtained. The 15.84% + 19.75% power-flattening design (uranium enrichment in the innermost and outermost rings + uranium enrichment in inner rings) reduces the local power peaking factor of the five-ring fuel assembly below 1.11 throughout the lifetime. Therefore, the KLT-40S five-ring fuel assembly has better burnup characteristics, and its optimal burnup lattice is at the 0.62 cm fuel rod diameter. The use of power-flattening designs can effectively reduce the local power peaking factor. |
| first_indexed | 2024-03-11T05:04:25Z |
| format | Article |
| id | doaj.art-cab4f4be61f142748bcc7a6d50f1e3c1 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T05:04:25Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-cab4f4be61f142748bcc7a6d50f1e3c12023-11-17T19:04:10ZengMDPI AGEnergies1996-10732023-04-01168336410.3390/en16083364Effect of KLT-40S Fuel Assembly Design on Burnup CharacteristicsZedong Zhou0Jinsen Xie1Nianbiao Deng2Pengyu Chen3Zhiqiang Wu4Tao Yu5School of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaSchool of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaSchool of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaSchool of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaSchool of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaSchool of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaThe KLT-40S is a small modular reactor developed by Russia based on the KLT-40 reactor with two fuel assembly designs: a four-ring and a five-ring. Few studies have been published on fuel assembly and power-flattening designs for the KLT-40S. In this paper, the effects of different fuel assembly designs on burnup and power flattening are investigated. This paper compares the effects of the two fuel assembly designs of the KLT-40S on its burnup characteristics, analyzes the effects of fuel rod diameter on burnup characteristics, and conducts a computational study on the ideal power-flattening design. The results show that the five-ring fuel assembly design has better burnup characteristics than the four-ring fuel assembly design. At a fuel rod diameter of 0.62 cm, the optimal burnup lattice is obtained. The 15.84% + 19.75% power-flattening design (uranium enrichment in the innermost and outermost rings + uranium enrichment in inner rings) reduces the local power peaking factor of the five-ring fuel assembly below 1.11 throughout the lifetime. Therefore, the KLT-40S five-ring fuel assembly has better burnup characteristics, and its optimal burnup lattice is at the 0.62 cm fuel rod diameter. The use of power-flattening designs can effectively reduce the local power peaking factor.https://www.mdpi.com/1996-1073/16/8/3364KLT-40Sassembly designoptimal burnup latticelocal power peaking factorpower-flattening design |
| spellingShingle | Zedong Zhou Jinsen Xie Nianbiao Deng Pengyu Chen Zhiqiang Wu Tao Yu Effect of KLT-40S Fuel Assembly Design on Burnup Characteristics Energies KLT-40S assembly design optimal burnup lattice local power peaking factor power-flattening design |
| title | Effect of KLT-40S Fuel Assembly Design on Burnup Characteristics |
| title_full | Effect of KLT-40S Fuel Assembly Design on Burnup Characteristics |
| title_fullStr | Effect of KLT-40S Fuel Assembly Design on Burnup Characteristics |
| title_full_unstemmed | Effect of KLT-40S Fuel Assembly Design on Burnup Characteristics |
| title_short | Effect of KLT-40S Fuel Assembly Design on Burnup Characteristics |
| title_sort | effect of klt 40s fuel assembly design on burnup characteristics |
| topic | KLT-40S assembly design optimal burnup lattice local power peaking factor power-flattening design |
| url | https://www.mdpi.com/1996-1073/16/8/3364 |
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