Analysis of September 2007, Bruce A Unit 3 SDS1 Rundown to Assess the Impact of Empty Channels on Detector Responses

Abstract

This paper documents the calculations performed using the Reactor Fuelling Simulation Program code to model the recent Bruce A Unit 3 SDS1 (September 2007) power rundown test. The RFSP predicted power rundown profiles for both SDS1 and SDS2 in-core NOP and Ion Chambers are in very good agreement with the measured responses for most detectors.Results confirm the conclusion of earlier validation studies with respect to overall RFSP accuracy of modeling SDS1 rundowns and show that the empty channels do not have a significant impact on the dynamic response of nearby detectors.