Abnormal event identification in nuclear power plants using a neural network and knowledge processing

Journal Article · Mon Feb 01 00:00:00 EST 1993 · Nuclear Technology; (United States)

OSTI ID:6551534

Ohga, Yukiharu; Seki, Hiroshi ^[1]

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1. Hitachi, Ltd. Energy Research Lab., Ibarakiken (Japan)

The combination of a neural network and knowledge processing have been used to identify abnormal events that cause a reactor to scram in a nuclear power plant. The neural network recognizes the abnormal event from the change pattern of analog data for state variables, and this result is confirmed from digital data using a knowledge base of plant status when each event occurs. The event identification method is tested using test data based on simulated results of a transient analysis program for boiling water reactors. It is confirmed that a neural network can identify an event in which it has been trained even when the plant conditions, such as fuel burnup, differ from those used in the training and when the analog data contain white noise. The network does not mistakenly identify the nontrained event as a trained one. The method is feasible for event identification, and knowledge processing improves the reliability of the identification.

• OSTI ID: 6551534
• Journal Information: Nuclear Technology; (United States), Vol. 101:2; ISSN 0029-5450
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
BWR TYPE REACTORS
TRANSIENTS
NUCLEAR POWER PLANTS
REACTOR MONITORING SYSTEMS
REACTOR SAFETY
NEURAL NETWORKS
ALARM SYSTEMS
DATA PROCESSING
FEASIBILITY STUDIES
IDENTIFICATION SYSTEMS
KNOWLEDGE BASE
PERFORMANCE TESTING
REACTOR OPERATION
REACTOR OPERATORS
RELIABILITY
SCRAM
TRAINING
ANIMALS
EDUCATION
ENRICHED URANIUM REACTORS
MAMMALS
MAN
NUCLEAR FACILITIES
OPERATION
PERSONNEL
POWER PLANTS
POWER REACTORS
PRIMATES
PROCESSING
REACTOR SHUTDOWN
REACTORS
SAFETY
SHUTDOWN
TESTING
THERMAL POWER PLANTS
THERMAL REACTORS
VERTEBRATES
WATER COOLED REACTORS
WATER MODERATED REACTORS
220900* - Nuclear Reactor Technology- Reactor Safety
210100 - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled