Importance of self-shielding for improving sensitivity coefficients in light water nuclear reactors

被引：13

作者：

Foad, Basma ^{[1
,2
]}

Takeda, Toshikazu ^{[1
]}

机构：

[1] Univ Fukui, Res Inst Nucl Engn, Tsuruga, Fukui 9140055, Japan

[2] Egypt Nucl & Radiol Regulatory Author, Cairo 11787, Egypt

来源：

ANNALS OF NUCLEAR ENERGY | 2014年 / 63卷

关键词：

Sensitivity coefficients; LWR; Self-shielding; Cross-section perturbation; Monte-Carlo; GENERALIZED PERTURBATION-THEORY;

D O I：

10.1016/j.anucene.2013.07.037

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

In order to perform sensitivity analyzes in light water reactors where self-shielding effect becomes important, a new method has been developed for calculating sensitivity coefficient of core characteristics relative to the infinite dilution cross-sections instead of the effective cross-sections. This method considers the change of the self-shielding factor due to cross-section perturbation for different nuclides and reactions. SRAC and SAINT codes are used to calculate the improved sensitivity; while the accuracy of the present method has been verified by MCNP code and good agreement has been found. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：417 / 426

页数：10

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