A study on simulation based evaluation of human error in operation and maintenance for nuclear power plants. System for human error analysis and evaluation

Now large-scale systems such as nuclear power plants have been complicated. Therefore, it becomes increasingly necessary to analyze and evaluate the HMI (Human Machine Interface) for the reliability from the HF (Human Factor) standpoint. Meanwhile, it is also important to estimate the risk of HE (Human Error) in which task in an individual work process is based on the work manual. In this paper, we introduce three kinds of system that can be easily a quantitative analysis and evaluation concerning HE and/or HF. We adopt quantitative analysis method for HRA (Human Reliability Analysis), that is THERP (Technique for HE Rate Prediction) and Event Tree Analysis in the system. Using these systems, a person, who does not have enough knowledge of HF, can estimate a HF prevention method and a HMI remediation design, etc. in a series of work task. (author)