United States Nuclear Regulatory Commission - Protecting People and the Environment

Component Performance Study - Turbine-Driven Pumps, 1987-1998 Commercial Power Reactors (NUREG-1715, Volume 1)

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Publication Information

Manuscript Completed: March 2000
Date Published: April 2000

Prepared by:
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

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Abstract

This report documents an analysis of the performance of safety-related turbinedriven pump assemblies (turbine driver, pump, and governor subcomponents) used in the pressurized water reactor (PWR) auxiliary feedwater (AFW) system and in the boiling water reactor (BWR) reactor core isolation cooling (RCIC) and high pressure coolant injection (HPCI) systems in U.S. commercial power reactor plants.

A risk-based analysis of operating data and an engineering analysis of trends and patterns were performed to provide insights into the performance of turbine driven pump components on an industry basis and comparison of results with data used by plant-specific probabilistic risk assessments. The data used in this report was from the 1987-1995 period for engineering analysis of the PWR AFW system and the BWR RCIC and HPCI systems. Failure probability estimates used combined engineered safety features data (1987-1998) and surveillance test data (1987-1995) for the PWR AFW system and for the BWR RCIC and HPCI systems.

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