Cesium release during high-temperature pre-treatment of fuel fragments with a burn-up of 61 GWd/tU

被引：3
|
作者：
Lee, Jae-Won [1 ]
Lee, Do-Yoon [1 ]
Lee, Young-Soon [1 ]
Yoon, Joo-Young [1 ]
Jeon, Sang-Chae [1 ]
Lee, Ju-Ho [1 ]
Hong, Seok-Min [1 ]
Cho, Yung-Zun [1 ]
机构：
[1] Korea Atom Energy Res Inst, Daedeok Daero 989-111, Daejeon 305353, South Korea
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2018年 / 317卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
Used fuel; Cesium release; Fragment; Thermal pre-treatment; FISSION-PRODUCT RELEASE; BEHAVIOR; OXIDATION;
D O I：
10.1007/s10967-017-5371-2
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The electrolytic reduction process in pyroprocessing of used fuel requires that fuel fragments be pre-treated to remove cesium and iodine. The effect of high temperatures and fuel fragment size on release of cesium was investigated over 10 h at a temperature of 1300-1400 A degrees C for fuel fragments with an O/U ratio of 2.2. Re-fragmentation of the original fragments was observed as changes in cesium release count rates as fuel was heated from 484 to 1329 A degrees C. The release of cesium is highly dependent on the size of fuel fragments and most of the cesium is released as the temperature is held at the maximum target value.
引用
收藏
页码：15 / 23
页数：9
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