Cause and Effect Diagram: Next Steps

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Cause and Effect Diagram: Next Steps
Jayanta Chakrabarti, Consultant, Saudi Arabia

It is well known that C&E analysis is a good tool for trouble shooting. My point is there can be many causes while drawing the C&E diagram. Once the diagram is complete how can one go to the root cause? Some people say the Pareto principle should be used to arrive at the root cause.
But even then, only arriving at the root cause and suggesting a corrective action is not good enough. It should be coupled with a responsibility matrix and an action plan. Then I guess the loop is completed. Once this is completed the post implementation review of the corrective action is to be done to see the effective functioning if the system and then synergize across the organisation. I think this should be the total approach.

Cause and Effect Next Steps
Natarajan Ramanathan, Consultant, India
The combination of categories and cause will let us know what are the issues. You can post a specific case for me to help you in finding an answer. According to the Pareto theory, 80% of the problems is caused by 20% of issues. Which means that if you focus on the 20% of the causes, then you have a better chance of reducing the number of issues / defects. It helps you in prioritizing.

Root Cause of Failure
Lee Webb, Turnaround Manager, United Kingdom
Run a Failure Mode & Effects Analysis FMEA off the back of the C&E if you are trying to minimise the risk of failure occuring.
If failure has occured, use a Fault Tree Analysis to understand the root cause.



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