[1E08-12] Severe Accident 2

[1E08] Development of analysis method based on SAMPSON for ATF with Cr coated Zr alloy cladding

*Kenichi Tezuka¹, Chiaki Kino¹, Yoshiyuki Nemoto², Susumu Yamashita², Afiqa Mohamad² (1. IAE, 2. JAEA)

Keywords:ATF, Severe Accident, Hydrogen generation, SAMPSON, CORA, Eutectic Reaction

A new analysis method is developed to evaluate accident progression in the case of Cr-coated Zr alloy cladding, which is being developed as accident tolerant fuel (ATF) cladding for PWRs. In this study, a new model will be incorporated to evaluate the accident progression in the case of Cr-coated Zr alloy cladding. The new model takes into account the peeling of Cr coating due to ballooning of the cladding and the eutectic of Cr and Zr. Test analysis will be conducted for CORA, which is a set of experiments to simulate the accident conditions, to examine how much hydrogen generation can be suppressed when ATF is used.