Читать книгу Root Cause Failure Analysis - Trinath Sahoo - Страница 56

The causal factor isn’t the single factor that drove the event. Instead, a causal factor was one of a few influences. The event could still occur again or would have happened without the causal factor. In fact, during a root cause analysis, analysts often use techniques called the “5 whys,” fish bone diagram, fault tree analysis etc to identify multiple causal factors until they find a root cause of an event. Put simply, the root cause is the primary driver of the event and causal factors are secondary or tertiary drivers.

During this stage, identify as many causal factors as possible. Too often, people identify one or two factors and then stop, but that's not sufficient. With RCA, you don't want to simply treat the most obvious causes – you want to dig deeper.

 What sequence of events leads to the problem?

 What conditions allow the problem to occur?

 What other problems surround the occurrence of the central problem?