Qualification of a Computer Program to Analyze Shutdown System Flux Detector Response in Point Lepreau Generating Station

Abstract

A study of more than ten years of reactor trip data, following the installation of Platinum-clad In-Core Flux Detectors at the Point Lepreau Generating Station (PLGS), revealed “anomalous” detector response times. In response to the finding, a fully automated and qualified computer program was developed to analyze detector response. The program analyzes delayed detector response to neutron flux as it deviates from design expectation. The following paper discusses the issues encountered and software development processes followed to ensure adherence to Canadian Standards Association (CSA) N286.7-99.