User's guide for signal validation software: Final report
Technical Report
·
OSTI ID:6047601
Northeast Utilities has implemented a real-time signal validation program into the safety parameter display systems (SPDS) at Millstone Units 2 and 3. Signal validation has been incorporated to improve the reliability of the information being used in the SPDS. Signal validation uses Parity Space Vector Analysis to process SPDS sensor data. The Parity Space algorithm determines consistency among independent, redundant input measurements. This information is then used to calculate a validated estimate of that parameter. Additional logic is incorporated to compare partially redundant measurement data. In both plants the SPDS has been designed to monitor the status of critical safety functions (CSFs) and provide information that can be used with plant-specific emergency operating procedures (EOPs). However the CSF logic, EOPs, and complement of plant sensors vary for these plants due to their different design characteristics (MP2 - 870 MWe Combustion Engineering PWR, MP3 - 1150 MWe Westinghouse PWR). These differences in plant design and information requirements result in a variety of signal validation applications.
- Research Organization:
- Performance Associates, Inc., Rocky Hill, CT (USA); Electric Power Research Inst., Palo Alto, CA (USA)
- OSTI ID:
- 6047601
- Report Number(s):
- EPRI-NP-5389; ON: TI88920007
- Country of Publication:
- United States
- Language:
- English
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