Fission product release from spent nuclear UOX fuel dissolution: Comparison between anoxic and reducing conditions and impact of pH

被引：0
|
作者：
Mennecart, Th. [1 ]
Cachoir, C. [1 ]
Lemmens, K. [1 ]
Gaggiano, R. [2 ]
Meert, K. [2 ]
Vandoorne, T. [2 ]
机构：
[1] Belgian Nucl Res Ctr, Inst Sustainable Waste & Decommissioning, B-2400 Mol, Belgium
[2] Organisme Natl Dechets Radioact & Matieres Fissile, Ave Arts 14, B-1210 Brussels, Belgium
来源：
MRS ADVANCES | 2024年 / 9卷 / 07期
关键词：
12;
D O I：
10.1557/s43580-024-00816-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Several clad segments from the same spent nuclear fuel rod were leached in a highly alkaline solution representative of the conditions expected in the current Belgian reference deep disposal design, and in presence of hydrogen. The results are compared with experiments that were conducted with clad and declad samples in a bicarbonate solution without presence of hydrogen. For the monitored radionuclides (238U, 90Sr, 137Cs, 129I, 99Tc), a fast initial release was observed. Afterwards, the release depended on the experimental conditions (medium, redox conditions) for uranium, strontium and technetium, but not for cesium and iodine. The cumulated released fractions were quantified at the end of the experiment.
引用
收藏
页码：363 / 367
页数：5
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