COMPUTER SUPPORT FOR DIAGNOSTIC TASKS IN THE PROCESS INDUSTRIES

Modern process plants are very large and complex and their control involves large flows of information. In fault conditions there is a severe problem of the interpretation of this information in order to diagnose the fault. The task of fault diagnosis is normally assigned, if only by default, to the process operator, but the use of the process computer to assist him in this task appears a natural development. The process computer normally takes in measurements from the plant, compares them with alarm limits and generates alarms. Clearly this task may in principle be extended to that of analysing the alarms to diagnose the fault.

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