Poison Injection Model for a CANDU Reactor

Abstract

A review of the analytical models used in the past for modelling power rundown transients initiated by Shutdown System Number 2 (SDS-2) poison injection revealed some inconsistencies. Revised models consistent with physical assumptions and experimental data are being developed to simulate SDS-2 performance. The results obtained to date indicate reasonable agreement with the measured reactivity and neutronic flux transients.