Abstract
Abstract The paper discusses the issues involved with computer support for systems reliability modelling. The problems related to computer aided logic model construction are explained. Expert system technology offers promising perspectives to solve these problems. Combined with graphics interface and analysis capabilities, a tool based on expert system technology can provide a natural engineering oriented environment for computer assisted reliability and safety modelling and analysis. Expert systems can explain their reasoning so that the analyst can become aware of how and why results are being obtained. Hence, the learning aspect involved in manual reliability and safety analysis can be maintained and improved. Next the STARS project is presented. STARS (Software Tool for the Analysis of Reliability and Safety) aims at developing an integrated set of Computer Aided Reliability Analysis tools for the various tasks involved in systems safety and reliability analysis including hazard identification, qualitative analysis, logic model construction and evaluation. For fault tree construction, a frame/rule based expert system is used, in which the deductive (goal driven) reasoning and the heuristics, applied during manual fault tree construction, is modelled.
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