TAILIEUCHUNG - Oxygen segregation in pre-hydrided Zircaloy-4 cladding during a simulated LOCA transient

This work aims at determining the key parameters controlling the average oxygen profile within the sample in the two-phase regions at 1200 °C. High temperature steam oxidation tests interrupted by water quench were performed using pre-hydrided Zircaloy-4 samples. | Oxygen segregation in pre-hydrided Zircaloy-4 cladding during a simulated LOCA transient EPJ Nuclear Sci. Technol. 3 27 2017 Nuclear Sciences E. Torres et al. published by EDP Sciences 2017 amp Technologies DOI epjn 2017020 Available online at http REGULAR ARTICLE Oxygen segregation in pre-hydrided Zircaloy-4 cladding during a simulated LOCA transient Elodie Torres1 Jean Desquines1 Séverine Guilbert1 Pauline Lacote1 Marie-Christine Baietto2 Michel Coret3 Martine Blat4 and Antoine Ambard4 1 Institut de Radioprotection et de Sûreté Nucléaire IRSN Centre d Etudes de Cadarache PSN-RES SEREX LE2M BP3 13115 Saint Paul-Lez-Durance Cedex France 2 INSA de Lyon Laboratoire de Mécanique des Contacts et des Structures LaMCoS UMR 5259 69621 Villeurbanne Cedex France 3 École Centrale de Nantes Institut de recherche en génie civil et mécanique GEM UMR 6183 44321 Nantes France 4 EDF-R amp D Les Renardières département MMC 77818 Moret sur Loing France Received 8 December 2015 Received in final form 16 May 2017 Accepted 8 August 2017 Abstract. Oxygen and hydrogen distributions are key elements influencing the residual ductility of zirconium- based nuclear fuel cladding during the quench phase following a Loss Of Coolant Accident LOCA . During the high temperature oxidation a complex partitioning of the alloying elements is observed. A finite-difference code for solving the oxygen diffusion equations has been developed by Institut de Radioprotection et de Sûreté Nucléaire to predict the oxygen profile within the samples. The comparison between the calculations and the experimental results in the mixed a b region shows that the oxygen diffusion is not accurately predicted by the existing modeling. This work aims at determining the key parameters controlling the average oxygen profile within the sample in the two-phase regions at 1200 C. High temperature steam oxidation tests interrupted by water quench were performed using pre-hydrided Zircaloy-4 samples. .

• Năng lượng
• Two phase regions
• Pre hydrided Zircaloy 4 samples
• Loss Of Coolant Accident
• Oxygen diffusion equations
• Electron Probe Micro Analysis