Note that the same event is used more than once in the.

As an example, consider the fault tree shown in Figure 1. Fault tree cut set example 1: Minimal cut set example. The system will fail if {1, 2, 3 and 4 fail} or {1, 2 and 3 fail} or {1, 2 and 4 fail}. All of these are cut sets.

However, the one including all components is not a minimal cut set because, free yellow pruning shrubs drawings clipart images 3 or 4 is removed, the remaining events are also a cut set. Cut set analysis is widely performed to mitigate these risks in fault tree construction. A cut set is a distinct path of failure leading to the top undesired event.

Upon initial dissection of a fault tree many cut sets are typically identified, but not all are unique. Jul 11, One of the important factors in qualitative analysis of fault tree is to identify minimal cut set. For instance complex and large fault tress have to use superior tools (algorithms for extraction) to get the minimal cut sets. Cut set: A set of basic events that together cause the TOP undesirable event.

Ex: X, Y and Z (from the below picture) Minimal cut set: A cut set with minimal number of events that Reviews: 9. Nov 27, Specifically, a cut set is said to be a minimal cut set if, when any basic event is removed from the set, the remaining events collectively are no longer a cut set, as discussed in Kececioglu. As an example, consider the fault tree shown in the figure below. The system will fail if {1, 2, 3 and 4 fail} or {1, 2 and 3 fail} or {1, 2 and 4 fail}.

Solve the fault tree for the combinations of events contributing to the top event. Examine the fault tree model to identify all the possible combinations of events and conditions that can cause the top event of interest. A combination of events and conditions sufficient and necessary to cause the top event is called a minimal cut set. Step 6. Aug 10, About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators.