期刊
JOURNAL OF NUCLEAR MATERIALS
卷 543, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jnucmat.2020.152559
关键词
Loca; Pre-oxidation; High temperature oxidation; Embrittlement
资金
- EDF
Experimental studies and modeling have shown that pre-oxidation of nuclear fuel cladding has an impact on post-LOCA quench resistance, with the pre-existing oxide layer exhibiting complex effects that can be modeled using a simple approach. A new correlation was established to evaluate the oxygen enriched alpha-phase thickness, and the growth of the zirconia layer was successfully analyzed and modeled. These models and correlations were implemented in a failure prediction model and compared to experimental results.
The influence of the nuclear fuel cladding pre-oxidation on post-LOCA quench resistance was experimentally studied and then modeled. Adopting a separate effect approach, quenched high temperature oxidized samples were axially loaded in a mechanical device. The pre-existing oxide layer shows a complex influence that was interpreted and modeled using a simple approach reproducing the main observed phenomena. A new correlation was established to evaluate the oxygen enriched alpha-phase thickness and the zirconia layer growth is analyzed and modeled. These models and correlations were implemented in a failure prediction model finally compared to experimental results. (C) 2020 Elsevier B.V. All rights reserved.
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