Developing a standard method for human reliability analysis of nuclear power plants

According as the demand of risk-informed regulation and application increase, the quality of a probabilistic safety assessment (PSA) has become more important. As part of enhancing the PSA quality, a study started to standardize the process and the rules of human reliability analysis (HRA) which was known as a major contributor to the uncertainty of PSA. This paper introduces the development of a standard HRA method for quantifying human error probability. The study was carried out with three stages; 1) assessing the level of quality of the HRAs in Korea and identifying the weaknesses of the HRAs, 2) determining the requirements for a standard HRA method, 3) developing the process and rules for quantifying human error probability