Abstract
In order to identify the influencing relationships between performance shaping factors (PSFs) and human error in digital control system of nuclear power plants, firstly, the organization-oriented causation conceptual model of human error is built. It is composed of four modules/levels, namely, levels of the organizational factors, situational factors, error-triggering individual factors and human error, and a model-based human error classification system is developed. Finally, the influencing relationships between contextual factors and human errors are identified based on incident reports, expert opinions and literatures. The results show that the impacts of contextual factors on human errors are very complex, and different contextual factors may produce different types of influencing on the same human error, the same contextual factors may produce different types of influencing on different human error etc.
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