Human factors in nuclear power plant safety management: a socio-cognitive modeling approach using TOGA Meta-Theory

Coping with socio-cognitive complexity in large critical technological infrastructures, as in the case of managing safety in a nuclear power plant, is a crucial topic in today's large systems technology. In such complex and not transparent humans-computers networks, each activity can be associated with a non-negligible risk probability. In nuclear power plants, the management of complexity closely relates to the safety monitoring and control of a whole plant by plant operators and managers. The aim of this work is a preliminary analysis of how a systemic methodological approach can be used for the modeling of complex human-technology activities in the frame of Integrated Safety Management (ISM) strategies in Large Complex Critical Infrastructures (LCCIs), such as nuclear plants systems. Top-down Object-based Goal-oriented Approach (TOGA) has been applied as a meta-modeling framework. (authors)