Cognitive analysis in human reliability: the case of a high-risk plant

摘要

In order to assess the possible risk and consequence of an initial event, the reliability of the production systems is studied through methodologies reassumed into the risk analysis; they take into account the technological process and, in general, the mechanical elements that constitute it. In other hand, they neglect the aspects that depend on the human factor and on its contribution to the reliability of the system. With this meaning, in order to integrate the common techniques of risk analysis, Human Reliability Analysis-HRA aims to assess the human factor. The search on the HRA, with the second-generation methodologies, developed cognitive models and man-machine interface models, which represent the behaviour of the operator and its interaction with the productive process. The present paper proposes an applicative case of HRA, where the cognitive model defined in CREAM is applied. The analysis allows to individualize the more hazardous procedures and the capacity of workers performing them.