APPLICATION OF EXPERT SYSTEMS TECHNOLOGY IN NUCLEAR-PLANTS

Technical Processes require expert systems with on-line and real-time capabilities. As the states of the process change with time, so do the contents of the expert system's knowledge base. Also, rule-based syst ems are not powerful enough to satisfy the requirements for an applica tion to be useful. New paradigms are necessary to cope with the proble ms. Integration of qualitative and quantitative modelling with respect to expert system applications to large technical processes is a must. As processes are event-based, so must be the expert system applied to it. Moreover, the paper shows that event orientation has a natural so ftware paradigm as a counterpart: object orientation. A method as to h ow the dynamical changes in the process are reflected in a dynamical ( time-dependent) knowledge base is also shown.