Mechanism Analysis of Difference between the Contribution of Nuclear Data to <i>k</i><sub>eff</sub> Uncertainty in HTR-10 and HTR-PM

Hao Chen; Guo Jiong; Li Fu; Wang Lidong

doi:10.13832/j.jnpe.2014.0076

Volume 35 Issue S2

Feb. 2025

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Hao Chen, Guo Jiong, Li Fu, Wang Lidong. Mechanism Analysis of Difference between the Contribution of Nuclear Data to keff Uncertainty in HTR-10 and HTR-PM[J]. Nuclear Power Engineering, 2014, 35(S2): 76-79. doi: 10.13832/j.jnpe.2014.0076

Citation:

Hao Chen, Guo Jiong, Li Fu, Wang Lidong. Mechanism Analysis of Difference between the Contribution of Nuclear Data to k_eff Uncertainty in HTR-10 and HTR-PM[J]. Nuclear Power Engineering, 2014, 35(S2): 76-79. doi: 10.13832/j.jnpe.2014.0076

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Mechanism Analysis of Difference between the Contribution of Nuclear Data to k_eff Uncertainty in HTR-10 and HTR-PM

doi: 10.13832/j.jnpe.2014.0076

1. Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin, 150001, China;
2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China

Received Date: 2014-09-20
Rev Recd Date: 2014-12-08

Available Online: 2025-02-15

Abstract

Abstract

Based on the TSUNAMI-3D-K5 model of SCALE6.1 code, the complete 3d models of sphere bed high temperature gas cool experimental reactor HTR-10 and sphere bed model high temperature gas cool reactor HTR-PM core have been established to carry out the research of keffuncertainty by using the 44 groups covariance matrix of nuclear data built-in the SCALE6.1. Through the uncertainty and sensitivity analysis of different nuclear reactions in HTR-10 and HTR-PM, the mechanism of difference between the contributions of nuclear data to the keffuncertainty has been understood. The results show that the difference in neutron leakage due to the difference between the core sizes, the difference between material content of 239 Pu and 235 U and the average fission neutrons are the main reason for the difference between the contributions of nuclear data to the uncertainty of k_eff.
- Nuclear data,
- High temperature gas cool reactor,
- Uncertainty