Cut set: A cut set in a fault tree is a set of basic events whose (si-multaneous) occurrence ensures that the TOP event occurs. Minimal cut set: A cut set that cannot be reduced without losing its status as a cut set. The TOP event occurs if one or more of the minimal cut sets occur.

FTA的定性分析的主要作用是通过构建故障树识别顶事件与底事件之间的关系，同时识别出可能引起顶层事件非预期发生的原始事件和原始事件组合，也即识别出割集（cut set）。

Cut Set § A cut set in a fault tree is a set of basic events whose (simultaneous) occurrence ensures that the TOP event occurs. § 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 11

Let’s first explain what a cutset is…it is simply a list of failures (or fault tree events) that lead to the top event when they occur together. This list of events, typically failures, is one of our failure combinations within our fault tree.

这种分析方法是一种有效的工具，可以引出所有可能导致系统中特定的顶层事件 (失效)的低层事件 (错误或故障及其相互关系)。 cut set （割集）可以导致顶级事件发生的门和事件。 最小割集 是导致顶层事件的事件的最小组合。 故障树的美妙之处在于，它可以帮助安全工程师识别所有可能导致顶层不安全故障的单点故障和双点故障。 安全工程师可以根据项目的 ASIL 和以割集为代表的事件发生的概率，在指定安全要求和安全机制时确定优先级和重点，以加强项目侧重薄弱点。 让 …

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. Repeated combinations of events may also be found in cut sets having the same …

Fault tree analysis (FTA) is a top-down approach to failure analysis, starting with a potential undesirable event (accident) called a TOP event, and then determining all the ways it can happen. The analysis proceeds by determining how the TOP event can be caused by individual or combined lower level failures or events.

Fault tree analysis (FTA) is a top-down approach to failure analysis, starting with a potential undesirable event (accident) called a TOP event, and then determining all the ways it can happen. The analysis proceeds by determining how the TOP event can be caused by individual or combined lower level failures or events.

2021年4月20日 · If you perform Fault Tree Analysis, one result you can extract is a list of cutsets. In this post you'll learn how you can use cutsets to your advantage.

在这些集合中，事件数量最少的集合被称为最小割集(minimal cut set)。 比如事件A发生必然导致顶事件发生，那么事件A可以被称为最小割集。 如果一个割集中只有一个底事件，那么称之为一阶割集，记为order 1；如果一个割集中有两个底事件，那么称之为二阶割集 ...