5Y & Tripod

The why-why are used for

• Drilling down into the exact problem

• Seek the potential consequences

• To stop the accident become worsening

• To proposed recomendation

Why-why is the only RCA method that can be used to identify the root cause

The second answer identify during why-why usually known as

• Pre-condition

• Underlying cause

• Immediate cause

• Root cause

Finding the right symptom may lead investigation team to identify the exact root cause.

• Yes

• No

• Not sure

Below are the RCA tools normally used, EXCEPT

• Tripod Beta

• Kinder Bueno

• Failure Mode Effect Analysis

• Why-Why / 5 Why

The Tripod core diagram (Trio's) consists of..., EXCEPT

• Event

• Object

• Hazard

• Agent

Describe what should be the language.

"EVENT happened due to...."

The barrier that could prevent the accident happen

• Missing barrier

• Effective barrier

• Failed barrier

• Inadequate barrier

2 failed barriers can share the same 1 immediate cause

• Not sure

• Yes

• No

During the construction of a complex Tripod diagram, Prime Event refers to

• Secondary incident event

• The biggest incident event

• Previous incident event

• Main incident event