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DOE OSTI · 2370154

System Study: Reactor Core Isolation Cooling 1998-2022

Ma, Zhegang·Wierman, Thomas·Kvarfordt, Kellie J.
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Abstract

This report presents an unreliability evaluation of the reactor core isolation cooling (RCIC) system at 28 U.S. commercial operating boiling water reactors. New Standardized Plant Analysis Risk (SPAR) models with the most recent SPAR parameter update results were used in this report. Demand, run hour, and failure data from calendar years 1998–2022 for selected components were obtained from the Institute of Nuclear Power Operations Industry Reporting and Information System. 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. Statistically significant decreasing trends were identified in both the RCIC system start-only unreliability and 8-hour mission unreliability.

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22 GENERAL STUDIES OF NUCLEAR REACTORSNuclear Power PlantReactor Core Isolation CoolingSystem Unreliability

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Ma, Zhegang, Wierman, Thomas, Kvarfordt, Kellie J.. 2023-12-25. System Study: Reactor Core Isolation Cooling 1998-2022. https://doi.org/10.2172/2370154

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