A methodology for the design and analysis of a sensor failure detection network
- National Tsinghua Univ., Hsinchu (Taiwan, Province of China)
Two topics are discussed: a method to evaluate and construct a sensor failure detection network and use of the network for signal validation of a complex system such as a nuclear power plant. The network is arranged in a tree structure and consists of plantwide sensor measurements and component models. Sensors are categorized into four classes via a logic state analysis to determine the effectiveness of the tree layouts and to reveal deficiencies in the sensor arrangements. Network building is automatic via a rule-based algorithm. Besides analytical redundancy and parity relations, plantwide consistency checks are implemented in the validation scheme to detect possible common-mode failures and modeling or process faults. Data are structured with an entity relationship and processed with an object-oriented technique. The working sequence is arranged using topological sorting to facilitate on-line, real-time applications. For a demonstration, the package is implemented on a microcomputer and applied to a pressurized water reactor plant for safety parameter validation. Its performance in detecting hypothetical sensor failures during power maneuver transients is presented.
- OSTI ID:
- 6441097
- Journal Information:
- Nuclear Technology; (United States), Journal Name: Nuclear Technology; (United States) Vol. 101:1; ISSN 0029-5450; ISSN NUTYBB
- Country of Publication:
- United States
- Language:
- English
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ALGORITHMS
COMPUTERS
CONTROL SYSTEMS
DESIGN
ELECTRONIC CIRCUITS
ENRICHED URANIUM REACTORS
EVALUATION
FAILURES
MATHEMATICAL LOGIC
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
ON-LINE SYSTEMS
PERFORMANCE
POWER PLANTS
POWER REACTORS
PWR TYPE REACTORS
REACTOR CONTROL SYSTEMS
REACTOR INSTRUMENTATION
REACTOR MONITORING SYSTEMS
REACTORS
REAL TIME SYSTEMS
THERMAL POWER PLANTS
THERMAL REACTORS
TRANSIENTS
WATER COOLED REACTORS
WATER MODERATED REACTORS