A COCAP Program for the Statistical Analysis of Common Cause Failure Parameters

Probabilistic Safety Assessment (PSA) based applications and regulations are becoming more important in the field of nuclear energy. According to the results of a PSA in Korea, the common cause failure evaluates CDF (Core Damage Frequency) as one of the significant factors affecting redundancy of NPPs. The purpose of the study is to develop a COCAP (Common Cause Failure parameter Analysis for PSA) program for the accurate use of the alpha factor model parameter data provided by other countries and for obtaining the indigenous CCF data of NPPs in Korea through Bayesian updating.This work was supported by the project of Central Research Institute, KHNP funded by the Korean government, MEST and partly supported by a BAERI program of the National Research Foundation of Korea