C 4 P CROSS-SECTION LIBRARIES FOR SAFETY ANALYSES WITH SIMMER AND RELATED STUDIES

A code and data system, C 4 P, is under development at KIT. It includes fine-group master libraries and tools for generating problem-oriented cross-section libraries, primarily for safety studies with the SIMMER code and related analyses. In the paper, the 560-group master library and problemoriented 40-group and 72-group cross-section libraries, for thermal and fast systems, respectively, are described and their performances are investigated.