SiC and FeCrAl as Potential Cladding Materials for APR-1400 Neutronic Analysis

被引：33

作者：

Alrwashdeh, Mohammad ^{[1
]}

Alameri, Saeed A. ^{[1
]}

机构：

[1] Khalifa Univ Sci & Technol, Emirates Nucl Technol Ctr ENTC, Dept Nucl Engn, POB 127788, Abu Dhabi, U Arab Emirates

来源：

ENERGIES | 2022年 / 15卷 / 10期

关键词：

light water reactor; nuclear fuel; cladding; SiC; FeCrAl; ACCIDENT-TOLERANT FUELS; SILICON-CARBIDE; NORMAL OPERATION; CROSS-SECTIONS; PERFORMANCE; REACTOR; ENDF/B-VII.1; JENDL-4.0; ALLOYS;

D O I：

10.3390/en15103772

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The aim of this study is to investigate the potential improvement of accident-tolerant fuels in pressurized water reactors for replacing existing reference zircaloy (Zr) fuel-cladding systems. Three main strategies for improving accident-tolerant fuels are investigated: enhancement of the present state-of-the-art zirconium fuel-cladding system to improve oxidation resistance, replacement of the current referenced fuel-cladding system material with an alternative high-performance oxidation-resistant cladding, and replacement of the current fuel with alternative fuel forms. This study focuses on a preliminary analysis of the neutronic behavior and properties of silicon carbide (SiC)-fuel and FeCrAl cladding systems, which provide a better safety margin as accident-tolerant fuel systems for pressurized water reactors. The typical physical behavior of both cladding systems is investigated to determine their general neutronic performance. The multiplication factor, thermal neutron flux spectrum, Pu-239 inventory, pin power distribution, and radial power are analyzed and compared with those of a reference Zr fuel-cladding system. Furthermore, the effects of a burnable poison rod (Gd2O3) in different fuel assemblies are investigated. SiC cladding assemblies present a softer neutron spectrum and a lower linear power distribution compared with the conventional Zr-fuel-cladding system. Additionally, the SiC fuel-cladding system exhibits behaviors that are consistent with the neutronic behavior of conventional Zr fuel-cladding systems, thereby affording greater economic and safety improvements.

引用

页数：17

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