| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7967666 | Journal of Nuclear Materials | 2014 | 15 Pages |
Abstract
One objective of the FPT2 test of the PHEBUS FP Program was to study the degradation of an irradiated UO2 fuel test section and the fission product behaviour under conditions of low steam flow. The results of the post-irradiation examinations (PIE) at the upper levels (823 and 900Â mm) of the 1-m long test section are presented in this paper. Material interactions leading to local corium formation were identified: firstly between fuel and Zircaloy-4 cladding, notably at 823Â mm, where the cladding melting temperature was reached, and secondly between fuel and stainless steel oxides. Regarding fission products, molybdenum left so-called metallic precipitates mainly composed of ruthenium. Xenon and caesium behave similarly whereas barium and molybdenum often seems to be associated in precipitates.
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Nuclear Energy and Engineering
Authors
M. Barrachin, D. Gavillet, R. Dubourg, A. De Bremaecker,