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CCF Parameter Estimates
CCF Parameter Estimates
Quantitative results of the common-cause failure (CCF) data collection effort are presented for the current data set.
Equipment failures that contribute to CCF events are identified during searches of Licensee Event Reports (LER), Nuclear Plant Reliability Data System (NPRDS) failure reports, and Equipment Performance and Information Exchange (EPIX) failure reports.
The quantitative results are presented as both alpha factors and multiple Greek letter parameter estimations. The alpha factor distributions are also presented.
Current Results:
- Parameter Estimations 2015
- Component Boundaries
- "Common-Cause Failure Database and Analysis System: Event Data Collection, Classification, and Coding" NUREG/CR-6268 Rev. 1
Historical Results:
- Parameter Estimations 2012
- Parameter Estimations 2010
- Parameter Estimations 2009
- Parameter Estimations 2007
- Parameter Estimations 2005
- Parameter Estimations 2003
- "Guidelines on Modeling Common-Cause Failures in Probabilistic Risk Assessment" NUREG/CR-5485
- Common-Cause Failure Database and Analysis System NUREG/CR-6268
Page Last Reviewed/Updated
Tuesday, December 8, 2020
