DEVELOPMENT OF A FAST BREEDER REACTOR FUEL BUNDLE-DUCT INTERACTION ANALYSIS CODE-BAMBOO: ANALYSIS MODEL AND VALIDATION BY THE OUT-OF-PILE

摘要

To analyze the wire-wrapped fast breeder reactor (FBR) fuel pin bundle deformation under bundle-duct interaction (BDI) conditions, the Japan Nuclear Cycle Development Institute has developed the BAMBOO com- Puter code. A three-dimensional beam element model is Used in this code to calculate fuel pin bowing and clad- Ding oval distortion, which are the dominant deforma- Tion mechanisms n a fuel pin bundle.