Neutronic analysis of different sandwich cladding material options for (Th-233U-235U)O2 annular fuel in advanced PWR assembly

被引：0

作者：

Taoufiq Bouassa ^{[1
]}

Ouadie Kabach ^{[2
]}

El Mahjoub Chakir ^{[2
]}

机构：

[1] Mohamed V University,PRESN, faculty of sciences

[2] Ibn Tofail University,LPMS, faculty of sciences

来源：

Interactions | / 245卷 / 1期

关键词：

Thorium-based fuel cycle; Dual-cooled annular assembly; SiC and SS-310 sandwich cladding; Cycle length parameters;

D O I：

10.1007/s10751-024-02094-7

中图分类号：

学科分类号：

摘要：

This study investigates the performance and safety characteristics of (Th-233U-235U)O2 fuel in various cladding materials, including SiC and a sandwich cladding system combining SiC with SS-310, in comparison to traditional UO2 fuel with Zirlo™ cladding. Utilizing a dual-cooled annular assembly design, the (Th-233U-235U)O2 fuel demonstrates significant enhancements in cycle length, outperforming conventional UO2 assemblies. The radial power distribution analysis reveals that (Th-233U-235U)O2 fuel reduces maximum radial power, contributing to uniform power distribution and enhanced reactor safety. Reactivity feedback coefficients, including Fuel Temperature Coefficients (FTCs) and Moderator Temperature Coefficients (MTCs), are consistently negative for (Th-233U-235U)O2 fuel with advanced claddings, indicating improved inherent safety.

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