Safety evaluation of silicon carbide and zircaloy-4 cladding during a large-break loss-of-coolant accident

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<jats:p>In this study, we aim to conduct structural analyses of cladding materials, such as silicon carbide and zircaloy-4, during a Large-Break Loss-of-Coolant Accident. The safety margin is the key consideration regarding the performance of the cladding materials. Our study shows that, in terms of primary stresses, SiC has a greater safety margin than zircaloy-4 due to SiC having a higher yield and ultimate strength; the cladding outer pressure is not affected by the cladding materials and, thus, the primary stresses of all cladding materials are the same. However, for secondary stresses, zircaloy-4 has the smallest fluctuation and irradiated SiC recorded the largest; secondary stresses and temperature histories are material-dependent. Ultimately, both cladding materials were found to have sufficient safety margins with respect to primary and secondary stresses.</jats:p>
Publisher
MDPI
Issue Date
2018-11
Language
English
Article Type
Article
Citation

Energies, v.11, no.12, pp.3324

ISSN
1996-1073
DOI
10.3390/en11123324
URI
http://hdl.handle.net/10203/249026
Appears in Collection
RIMS Journal Papers
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