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DOE OSTI · 1631740

System Study: Auxiliary Feedwater 1998–2018

Ma, Zhegang·Kvarfordt, Kellie J.·Schroeder, John A.·Wierman, Thomas E.
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Abstract

This report presents an unreliability evaluation of the auxiliary feedwater (AFW) system at 69 U.S. commercial nuclear power plants. Demand, run hours, and failure data from calendar year 1998 through 2018 for selected components were obtained from the Institute of Nuclear Power Operations (INPO) Industry Reporting and Information System (IRIS), formerly the INPO Consolidated Events Database (ICES). The unreliability results are trended for the most recent 10 year period while yearly estimates for system unreliability are provided for the entire active period. No statistically significant increasing or decreasing trends were identified in the AFW results.

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Ma, Zhegang, Kvarfordt, Kellie J., Schroeder, John A., Wierman, Thomas E.. 2019-12-01. System Study: Auxiliary Feedwater 1998–2018. https://doi.org/10.2172/1631740

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