Fine Rod Power Calculation and Verification for the Entire Lifetime of a Small Lead-Bismuth Fast Reactor

Gao Jiehao; Du Xianan; Chen Wenjie; Zheng Youqi

doi:10.13832/j.jnpe.2025.S1.0181

Volume 46 Issue S1

Jul. 2025

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Gao Jiehao, Du Xianan, Chen Wenjie, Zheng Youqi. Fine Rod Power Calculation and Verification for the Entire Lifetime of a Small Lead-Bismuth Fast Reactor[J]. Nuclear Power Engineering, 2025, 46(S1): 181-191. doi: 10.13832/j.jnpe.2025.S1.0181

Citation:

Gao Jiehao, Du Xianan, Chen Wenjie, Zheng Youqi. Fine Rod Power Calculation and Verification for the Entire Lifetime of a Small Lead-Bismuth Fast Reactor[J]. Nuclear Power Engineering, 2025, 46(S1): 181-191. doi: 10.13832/j.jnpe.2025.S1.0181

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Fine Rod Power Calculation and Verification for the Entire Lifetime of a Small Lead-Bismuth Fast Reactor

doi: 10.13832/j.jnpe.2025.S1.0181

Xi’an JiaoTong University, Xi’an, 710049, China

Received Date: 2024-12-19
Rev Recd Date: 2025-02-27
Publish Date: 2025-07-09

Abstract

Abstract

Small lead-bismuth fast reactors, due to their compact design, impose higher requirements on reactor physics analysis codes. This paper explores the methodology of full-life cycle fine rod power calculations for the SVBR-100 small Lead-Bismuth fast reactor. The results show that for this type of reactor core, the two-step method code needs to consider the power distribution information in assembly (shape factor) obtained during the assembly homogenization process when performing fine rod power calculations. Additionally, the calculation of the shape factor must account for the influence of assembly layout and material information. Based on the above calculation method, this paper applies the SARAX from the Nuclear Engineering Computational Physics Laboratory (NECP) of Xi'an Jiaotong University to perform entire lifetime cycle fine rod power calculations for the SVBR-100 reactor core and compares the results with those from the Monte Carlo code. The calculation results demonstrate that SARAX achieves high accuracy in entire lifetime cycle fine rod power calculations for small lead-bismuth fast reactors. This work establishes a foundation for subsequent code applications in small lead-bismuth fast reactor core design and high-resolution calculations of multiphysics coupling.
- Small Lead-Bismuth fast reactor,
- Calculation for reactor entire lifetime,
- Reactor fine power calculation,
- SARAX,
- SVBR-100

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References(21)

References

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