An expert system for sensor data validation and malfunction detection
Nuclear power plant operation and monitoring in general is a complex task which requires a large number of sensors, alarms and displays. At any instant in time, the operator is required to make a judgment about the state of the plant and to react accordingly. During abnormal situations, operators are further burdened with time constraints. The possibility of an undetected faulty instrumentation line, adds to the complexity of operators' reasoning tasks. Failure of human operators to cope with the conceptual complexity of abnormal situations often leads to more serious malfunctions and further damages to plant (TMI-2 as an example). During these abnormalities, operators rely on the information provided by the plant sensors and associated alarms. Their usefulness however, is quickly diminished by their large number and the extremely difficult task of interpreting and comprehending the information provided by them. The need for an aid to assist the operator in interpreting the available data and diagnosis of problems is obvious. Recent work at the Ohio State University Laboratory of Artificial Intelligence Research (LAIR) and the nuclear engineering program has concentrated on the problem of diagnostic expert systems performance and their applicability to the nuclear power plant domain. There has also been concern about the diagnostic expert systems performance when using potentially invalid sensor data. Because of this research, an expert system has been developed that can perform diagnostic problem solving despite the existence of some conflicting data in the domain. This work has resulted in enhancement of a programming tool, that allows domain experts to create a diagnostic system that will be to some degree, tolerant of bad data while performing diagnosis. This expert system is described here.
- Research Organization:
- Ohio State Univ., Columbus (USA)
- DOE Contract Number:
- AC02-86NE37965
- OSTI ID:
- 5489532
- Report Number(s):
- CONF-870832-8; ON: DE88004920
- Resource Relation:
- Conference: Topical meeting on artificial intelligence and other innovative computer applications in the nuclear industry, Snowbird, UT, USA, 31 Aug 1987; Other Information: Paper copy only, copy does not permit microfiche production
- Country of Publication:
- United States
- Language:
- English
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EXPERT SYSTEMS
ARTIFICIAL INTELLIGENCE
DECISION MAKING
ALARM SYSTEMS
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DECISION TREE ANALYSIS
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FAILURES
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REACTOR ACCIDENTS
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SIGNALS
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CONTROL SYSTEMS
INFORMATION
NUCLEAR FACILITIES
OPERATION
PERSONNEL
POWER PLANTS
REACTORS
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THERMAL POWER PLANTS
WATER COOLED REACTORS
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