8D - proposed corrective action, and then a corrective action implementation

[Clarence.L]

Hi all,

When I went through the 8D report, and just have a tiny concern.

Why there is a proposed corrective action, and then a corrective action implementation, but, there is no proposed preventive action?

For me, the action of "propose" is to evaluate the effectiveness prior to implementation. So why not evaluate prior to implement the preventive action?

Please advice. Many thanks.

[D.Scott]

Just an opinion here but I would assume you would evaluate the effectiveness on the corrective action stage before you decide to implement the action as preventive. There should be no need to re-evaluate the action for the second application.

Dave

[The Taz!]

If you follow the whole 8D methodology, in your investigations you will probably uncover systemic and process root causes which will require different corrective actions. You will also in all probability find that you can correct a situation in a few different ways.

Proposed Corrective Actions allows you to list what potential actions can be implemented (and evaluate them as you stated), and Chosen Corrective Action is where you enter what you actually did.

Preventive actions typically are systemic in nature (i.e. Update PFMEA or change Work Instruction in other areas that could have the same potential for failure, etc.).