A Study on the Development of an Expert System for Chemical Plant Fault Diagnosis - A trouble analyzing system based on Functional Structure -

화학 플랜트의 고장원 탐색 전문가 시스템에 관한 연구 -기능구조에 의한 고장원 탐색 시스템 -

A methodology to develop an expert system for chemical plant fault diagnosis based on functional-structure of chemical plant is proposed. A methodology to generalize and utilize the heuristic know-edge of plant operators is also developed. A plant can be seen as a Hierarchical set of subsystems. Each subsystem is called a SCOPE. The state of the plant and the behavior of each subsystem is managed by the SCOPES. An expert system based on this functional structure and knowledge base has been developed and ar plied to the subprocess of etylene plant to evaluate the effectiveness of the methodology.