Procedures for Treating Common Cause Failures in Safety and Reliability Studies: Analytical Background and Techniques,

摘要

The report presents a framework for the inclusion of the impact of common cause failures in risk and reliability evaluations. Common cause failures are defined as that subset of dependent failures for which causes are not explicitly included in the logic model as basic events. The emphasis here is on providing procedures for a practical, systematic approach that can be used to perform and clearly document the analysis. The framework comprises four major stages: (1) system logic model development; (2) identification of common cause component groups; (3) common cause modeling and data analysis; and (4) system quantification and interpretation of results.