Component Performance Study – Motor-Driven Pumps, 1987-1998 Commercial Power Reactors (NUREG-1715, Volume 2)
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Manuscript Completed: June 2000
Date Published: June 2000
J.R. Houghton, H.G. Hamzebee
Division of Risk Analysis and Applications
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001
This report documents an analysis of the performance of safety-related motordriven pump assemblies (pump, motor, and circuit breaker subcomponents) used in the pressurized water reactor (PWR) and in the boiling water reactor (BWR) riskimportant systems in U.S. commercial power reactor plants.
A risk-based analysis of operating data and an engineering analysis of trends and patterns were done to provide insights into the performance of motor-driven pump components on an industry basis, and the results were compared with data used by plant-specific probabilistic risk assessments. The engineering analysis of selected risk-important systems used data from the 1987-1995 period. Failure probability estimates used combined engineered safety features data (1987-1998) and surveillance test data (1987-1995).
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