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DOE OSTI · 1467108

Enhanced Component Performance Study: Motor-Driven Pumps 1998–2016

Ma, Zhegang·Schroeder, John A.
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Abstract

This report presents an enhanced performance evaluation of motor-driven pumps (MDP) at U.S. commercial nuclear power plants. The data used in this study are based on the operating experience failure reports from calendar year 1998 through 2016 for the component reliability as reported in the Institute of Nuclear Power Operations (INPO) Consolidated Events Database (ICES). The motor-driven pump failure modes considered for standby systems are failure to start, failure to run less than or equal to one hour, and failure to run more than one hour; for normally running systems, the failure modes considered are failure to start and failure to run. An eight hour unreliability estimate is also calculated and trended. The component reliability estimates and the reliability data are trended for the most recent 10-year period while yearly estimates for reliability are provided for the entire active period. Highly statistically significant increasing trend was identified in normally running MDP run hours per reactor year.

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22 GENERAL STUDIES OF NUCLEAR REACTORSComponent PerformanceMotor-Driven PumpNuclear Power PlantReliabilityTrend

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Ma, Zhegang, Schroeder, John A.. 2018-04-01. Enhanced Component Performance Study: Motor-Driven Pumps 1998–2016. https://doi.org/10.2172/1467108

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