Investigation on Resonance Self-Shielding Calculation for PWR Cladding Materials Based on Equivalence Theory

被引：0

作者：

Xiao X. ^{[1
]}

Wu J. ^{[1
]}

Chen Y. ^{[1
]}

Yang T. ^{[2
]}

Zhu C. ^{[2
]}

Li S. ^{[2
]}

机构：

[1] School of Nuclear Science and Engineering, North China Electric Power University, Beijing

[2] State Power Investment Corporation Research Institute Co., Ltd., Beijing

来源：

Hedongli Gongcheng/Nuclear Power Engineering | 2021年 / 42卷 / 01期

关键词：

DRAGON; Equivalence theory; PWR cladding material; Resonance self-shielding effect;

D O I：

10.13832/j.jnpe.2021.01.0065

中图分类号：

学科分类号：

摘要：

The treatment of resonance self-shielding effect is one of the key factors for reactivity accuracy in PWR lattice code. The PWR cladding materials for zirconium isotopes also has the resonance self-shielding effect. Ignoring the influence of resonance self-shielding effect for cladding materials, it can cause 100~300 pcm errors in reactivity predictions. Now, the reference dilution cross section and cladding equivalence theory can be used in treating the resonance self-shielding effect for cladding material, but the applicability and accuracy of these methods has not been completely tested. Therefore, a series of PWR cases are used in testing the applicability of these methods computed by DRAGON code. The main impact factors for the resonance self-shielding effect in cladding material and the applicability of these two methods are determined. The results show that the resonance self-shielding effect in cladding material is only related to nuclide density, thickness and water/uranium ratio in the moderator region. The reference dilution cross section satisfies the typical PWR cases, however it can cause more errors in the great change of the above three factors. The new equivalence theory is more accurate and flexible, which can be used in different PWR cladding materials for the calculation of the resonance self-shielding effect. © 2021, Editorial Board of Journal of Nuclear Power Engineering. All right reserved.

引用

页码：65 / 69

页数：4

共 15 条

[1]

STAMM'LER R J J, ABBATE M J., Methods of steady-state reactor physics in nuclear design, pp. 286-335, (1983)

[2]

LEVITT L., The probability table method for treating unresolved neutron resonances in monte carlo calculations, Nuclear Science and Engineering, 49, 4, pp. 450-457, (1972)

[3]

SUGIMURA N, YAMAMOTO A., Resonance treatment based on ultra-fine-group spectrum calculation in the AEGIS code, Journal of Nuclear Science and Technology, 44, 7, pp. 958-966, (2012)

[4]

WILLIAMS M L, KIM K S., The embedded self- shielding method, (2012)

[5]

CHOI S, LEE H, HONG S G, Et al., Resonance self- shielding methodology of new neutron transport code stream, Journal of Nuclear Science and Technology, 52, 9, pp. 1133-1150, (2015)

[6]

LESZCYNSKI F., WIMS-D library update: final report of a coordinated research project, pp. 9-14, (2007)

[7]

[8]

CHADWICK M B, OBLOZINSKY P, HERMAN M, Et al., ENDF/B-VII: next generation evaluated nuclear data library for nuclear science and technology, Nuclear Data Sheets, 107, 12, pp. 2931-3060, (2006)

[9]

MARLEAU G, HEBERT A, ROY R., A user guide for DRAGON version 5. Technical Report: IGE-335, (2014)

[10]

WANG K, LI Z, SHE D, Et al., RMC-A Monte Carlo code for reactor core analysis, 2013 Joint International Conference on Supercomputing in Nuclear Applications, (2014)

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