Validation of NFI BWR Nuclear Design system for MOX loading CoreAnalysis: Tracking Analysis of Gundremmingen Unit B

摘要

The applicability of improved NFI BWR nuclear design system to MOX loading core has been confirmed. The analyses for the core tracking of hot full power operation and cold critical tests of cycle 21 of Gundremmingen unit B, that is the reactor core with three hundreds MOX assemblies, were carried out for the validation of NFI BWR nuclear design system. As a result, RMS of relative difference between measured 3D TIP data and simulated data were about 4% through the cycle. And standard deviation of criticaleigen-values of cold critical tests was about 0.1%.