6.5 Summary
This chapter discusses the reliability modeling of deterministic CCFs, where the occurrence of a root cause results in deterministic failures of multiple system components simultaneously. Several different combinatorial approaches are presented. The explicit approach based on expanding the system reliability model is straightforward. However, it can become computationally inefficient for large‐scale systems. In addition, the explicit approach is only applicable to systems subject to s‐independent CCs. The implicit approaches (the EDA and DD‐based aggregation methods) require no expansion on the system reliability model and are flexible in handling the s‐relationship among CCs (which can be s‐independent, s‐dependent, or mutually exclusive). The UGF method presented provides a reliability evaluation solution for series‐parallel systems subject to CCFs that take random time to take effect. All of the approaches discussed in this...