PROMPT SUPERCRITICAL KINETIC ANALYSIS WITH NEUTRON COUPLING BETWEEN FUEL DEBRIS

摘要

An integral kinetic method was applied to analyze kinetic behavior in a criticality accident involving a weakly coupled two-region fuel debris system. The results of preliminary analysis shows the method is useful to understand the neutron transport phenomena and fissions during the transient and to predict the increase of fission energy during the transient by the existence of neighboring fuel debris.