Czynniki ludzkie i analiza bezpieczeństwa funkcjonalnego

In this article some issues concerning the safety management in computerized complex hazardous plant are presented in the context of human factors. It has been shown that the risk of losses can be significantly reduced using appropriate technical solutions in the form of a layer protection system, which includes a basic process control system, human-operator and protection automatics. The significance of appropriate designing of interfaces including functions of the alarm system is emphasized. It will contribute to reducing the humanoperator error probability. The functional safety management, which includes the risk control in a life cycle of complex plant, should be carried out in relation to requirements associated with possible avoiding of software systematic failures in programmable systems and reducing the frequency of hardware random failures.