IMPORTANT ISSUES USING PSA TECHNOLOGY FOR DESIGN OF NEW SYSTEMS AND PLANTS

Modern engineering design of new systems or plants needs not only the specification of the function of the system during various life cycle periods, but also the consideration of additional requirements and the demonstration of the compliance with it based on a predictive model considering measurable properties and possible malfunctions of the system parts. Additional requirements can be high availability, low emissions or high safety level. PSA technolgoy provides a framework and tools to establish design targets and to demonstrate their compliance. In this paper important issues using this technology are discussed. Issues are targeted at various levels-the basic evaluation of reliability for active and passive components and the entire system, the general process to show the compliance of the given system characteristics with the characteristics required. This paper does not deal with the details of all these issues, but provides references for further information.