Experimental measurements to evaluate the effects of fuel microstructure on fission gas release in thoria

被引：2

作者：

Barry, A. ^{[1
]}

机构：

[1] Canadian Nucl Labs, Chalk River, ON, Canada

来源：

ANNALS OF NUCLEAR ENERGY | 2021年 / 151卷

关键词：

Thorium dioxide; Thoria; Fission gas release; Irradiation; Fuel performance; Microstructure;

D O I：

10.1016/j.anucene.2020.107933

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：

Canadian Nuclear Laboratories (CNL) has many decades of thoria research and development experience, including fabrication, irradiation testing, and post-irradiation examination. CNL has previously shown fission gas release (FGR) to be dependent on fuel microstructure in thoria fuels. Lower density fuel with large granules surrounded by porous regions results in higher FGR. Higher and more uniform density fuel results in superior FGR results in thoria fuels with a similar irradiation history. In this paper, this effect of fuel microstructure on FGR is shown empirically using the most recent post-irradiation examination (PIE) results of CNL's DME-176 and DME-221 thoria experiments. Previously reported PIE results of CNL's BDL-422 and DME-221 thoria experiments are also compared. Crown Copyright (C) 2020 Published by Elsevier Ltd. All rights reserved.

引用

页数：8

共 38 条

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