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|Title:||Thermal properties of irradiated UO2 and MOX fuels|
|Publisher:||Elsevier's Science Direct|
|JRC Publication N°:||JRC58590|
|Type:||Articles in books|
|Abstract:||The thermal conductivity of UO2 and MOX LWR fuels decreases as a result of reactor burn-up. In this chapter, the phenomena causing this degradation are presented and the effect of the most influent parameters is discussed. Information useful for the interpretation and comparison of in-pile or out-of-pile measurements is given, especially as a function of burn-up and for samples having different irradiation temperatures, in-pile histories and microstructures. The impact of the introduction of plutonium or additives (Gd, Cr) in standard UO2 is also addressed. The evolution of the thermal conductivity as a function of burn-up is non-linear and the numerous approaches and approximations that are used to obtain thermal conductivity correlations are summarised and compared.|
|JRC Institute:||Institute for Transuranium Elements|
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