Development and testing of an integrated signal validation system for nuclear power plants

Technical Report · Fri Sep 01 04:00:00 EDT 1989

DOI:https://doi.org/10.2172/5229987· OSTI ID:5229987

Upadhyaya, B. R.; Kerlin, T. W.; Gaudio, Jr., P. J.

Since the incident at Three Mile Island unit 2, computerized plant status display, implementation of human factors in control room design, and plant monitoring based on expert system technology have seen a tremendous growth. One such proposed operator assist device is a plant signal validation system. This system is used to check the consistency of redundant measurements (sensors) of selected process variables, estimate their expect values from plant-wide data, and detect, isolate and characterize the type of anomaly in the instrument channel outputs. In large process control systems signals from several hundred instrument channels are routed via data highways to control systems, protection (safety) systems and plant monitoring systems. The need of automated signal validation is necessary because of the large amount of information available, and as a result the operator's inability to validate information from many diverse sources. This is also useful for improved plant control (minimize challenges on control systems), minimizing plant downtime, and for predictive maintenance advising. 107 refs., 56 figs., 6 tabs.

• Research Organization: Combustion Engineering, Inc., Stamford, CT (USA); Tennessee Univ., Knoxville, TN (USA). Dept. of Nuclear Engineering
• Sponsoring Organization: DOE/NE
• DOE Contract Number: AC02-86NE37959
• OSTI ID: 5229987
• Report Number(s): DOE/NE/37959-34-Vol.1; ON: DE90003354
• Country of Publication: United States
• Language: English

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