Accessorial Software for Reliability Analysis of Reactor Protection System

Based on the reactor protection system of a certain type of digital I＆C system for a nuclear power plant, this paper analyzes its structure and functions, and puts forward the requirements of the graphic automatic modeling. It develops the dedicated accessorial software for reliability analysis based on the requirements. This software can realize the graphical configuration of reactor protection system in the reliability analysis process for safety functions,and it can create, modify and save the configuration figures. The software also has the functions of automatic analysis of configuration scheme and the automatic generation and output of fault tree information and etc.