PLANT FAULT DIAGNOSTIC SYSTEM

PURPOSE:To execute the intelligence management of plural plants at a remote location centralizingly by registering intelligence for fault diagnosis to a database software, connecting a computer to a central management center at a remote location with a communication line so as to revise the intelligence on the database from the center. CONSTITUTION:A diagnostic intelligence is stored in a database 1 so as to store and extract an intelligence revision tool freely via an inference engine 3 or a communication software 2. The inference engine 3 grasps the state of a plant via a process input 4 and outputs the result of fault diagnosis to the operator via a resulting output 5. A telephone line, e.g. is used for a communication line 7 to connect electrically the center and the plant at a remote location. The center uses an intelligence revision tool 6 to revise the intelligence of the plant at a remote location as if the center were installed at the site. Thus, the intelligence of the maintenance personnel is not required to be resident in the plant at site and a skillful expert manages plural plants timely in the center.