|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Energy Materials 2017: Materials for Nuclear Energy
||Irradiation Defects in UO2, CeO2 and (U, Ce)O2 Leached in Oxidizing Water: An In-situ Raman Study
||Ritesh Mohun, Lionel Desgranges, Christophe Jégou, Sandrine Miro, Patrick Simon, Aurélien Canizarès, Nicole Raimboux
|On-Site Speaker (Planned)
Our study is focused on an incidental scenario of a defective fuel rod stored in water pools, which will allow water to interact with the irradiated fuel matrix. We simulated this scenario under laboratory conditions using He irradiation of a UO2/H2O system. An in-situ Raman installation was used to measure the kinetics of irradiation induced defects in UO2. The acquired data were then compared with a reference UO2/(Ar+H2) system. The results revealed that the presence of either aerated deionized water or reducing environment modifies the formation kinetics of irradiation defects under alpha irradiation. In addition, the precipitation of the studtite phase is also observed during the leaching experiment and detailed solution analysis showed that the dissolution of UO2 proceeds without the formation of an oxidized UO2+x layer. Similar studies carried out with CeO2 and (U, Ce)O2, which is a surrogate material for MOX fuel, will also be presented.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)