BWR REGIONAL INSTABILITY ANALYSIS BY TRAC/BF1-ENTREE-II: APPLICATION TO RINGHALS UNIT-1 STABILITY TEST

摘要

Based on the Ringhals unit-1 stability test results, the coupling system TRAC/BF1-ENTREE has been bench- marked for predicting decay ratio and limit-cycle ampli- tude of the regional instability. The core was mapped into fewer CHAN groups based on the first azimuthal model flux shape and the guidelines to minimize the nu- merical interregion stabilizing interaction.