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View Full Version : Control Of Nonconforming Material / Product - Feedback on my Procedure Please


ttwerp65
11th September 2006, 01:05 PM
I hope I have attached this correctly. I would appreciate any feedback on this procedure. We are only an 30 man build to print shop. Many of the team wears multiple shoes. I was wondering about any blind spots I might have missed?:thanx:

CarolX
15th September 2006, 11:18 AM
Hi Terry -

Your procedure looks fine to me, except for the repair and rework -

Repair - Defined as action that makes the object usable but not to drawing specifications. Usually requires customer approval.

Rework - Activity or effort required to convert an otherwise unacceptable outcome of a process or product into an acceptable outcome.

Other than that - looks fine to me.

Any other comments?

Craig H.
15th September 2006, 11:53 AM
Hi.

I think 1.3 is unclear, and may need rewording.

Also, the method of identifying nonconforming material is not defined. Have you considered marking the material when it is found? It can be simple. We use some of that ~1" orange plastic flagging tape on our pallets that are in question. Maybe a red sticker or something?

Jim Wynne
15th September 2006, 11:56 AM
Hi Terry -

Your procedure looks fine to me, except for the repair and rework -

Repair - Defined as action that makes the object usable but not to drawing specifications. Usually requires customer approval.

Rework - Activity or effort required to convert an otherwise unacceptable outcome of a process or product into an acceptable outcome.

Other than that - looks fine to me.

Any other comments?

There's a little confusion in the language, Carol. Using your definitions, "Repair" is the same as "Rework," because it converts product to an "acceptable" state.

Here are the two definitions from ttwerp65's procedure:

4.1 Rework: Taking action to eliminate NC by reprocessing.
4.1.1 After taking action to eliminate NC, it will be subjected to its original inspection requirements.

4.3 Repair: Taking action to eliminate a “specific” non-conformity.
4.3.1 The minimum inspection criteria will consist of the NC that causedthe product to be repaired.


I think the distinction made is too vague, but with regard to Carol's observations, there is no universally accepted definition of the distinction between "repair" and "rework." There might be definitions that are recognized in industry standards or by individual customers, but if there aren't, each company is free to define the processes as they see fit.

BTW, when a product is nonconforming but useable, it almost always means that the specifications need to be changed, and verifying the efficacy of specifications should be a part of the NC material process.

ttwerp65
15th September 2006, 11:59 AM
Carol,
Thanks so much for your time. I agree with your assessment. I am going to change my definitions. I am pleased that it didnt get completely hack to pieces.:rolleyes: I have just completed 3 of the required procedure written and approved in-house, but I am the only one studying this process at this time. So, I feel way more comfortable with getting fellow ISO colleage to say:agree1: or:nope: . Thanks again!! HAPPY FRIDAY!!:)

Coury Ferguson
15th September 2006, 12:10 PM
There's a little confusion in the language, Carol. Using your definitions, "Repair" is the same as "Rework," because it converts product to an "acceptable" state.

Here are the two definitions from ttwerp65's procedure:


I think the distinction made is too vague, but with regard to Carol's observations, there is no universally accepted definition of the distinction between "repair" and "rework." There might be definitions that are recognized in industry standards or by individual customers, but if there aren't, each company is free to define the processes as they see fit.

BTW, when a product is nonconforming but useable, it almost always means that the specifications need to be changed, and verifying the efficacy of specifications should be a part of the NC material process.


The definition of repair/rework, in my opinion is:

Part has been fixed (repaired) but, did not eliminate the nonconformity, which means the repair is visible after completion.

For example: A hole drilled in the wrong location. Disposition: Plug weld. This might eliminate the hole in the wrong location, but it is visible. Carol is right. This action would require customer approval.

The rework is defined as a nonconformity that can be brought back into the drawing requirements, without visible repercussions:

For example: The hole was drilled in the correct location, however, it was under size. To rework this part you would open the hole to the drawing requirements.

CarolX
15th September 2006, 01:42 PM
There's a little confusion in the language, Carol. Using your definitions, "Repair" is the same as "Rework," because it converts product to an "acceptable" state..

I agree - guilty of cut and paste from our Wiki site.


I think the distinction made is too vague, but with regard to Carol's observations, there is no universally accepted definition of the distinction between "repair" and "rework." There might be definitions that are recognized in industry standards or by individual customers, but if there aren't, each company is free to define the processes as they see fit.


Jim - I agree there may not be a "universally" accepted definition, but for those of us with Aircraft and Defense contracting experience - this is the standard definition.


For example: A hole drilled in the wrong location. Disposition: Plug weld. This might eliminate the hole in the wrong location, but it is visible. Carol is right. This action would require customer approval.

The rework is defined as a nonconformity that can be brought back into the drawing requirements, without visible repercussions:

For example: The hole was drilled in the correct location, however, it was under size. To rework this part you would open the hole to the drawing requirements.

Excellent example - I was trying to think of something similar to add to my post, but I was having a major brain fart!

I am pleased that it didnt get completely hack to pieces

Terry - You are very welcome - Most of your procedure was pretty standard stuff - ----- btw having fun, yet??? :biglaugh: :biglaugh:

ttwerp65
15th September 2006, 02:13 PM
Well, no icon present for that question carol.:rolleyes: It is friday though:agree1:

ttwerp65
15th September 2006, 02:35 PM
Is anyone providing work instruction for proper use of n/c report. Meaning, how to fill out!!!

Coury Ferguson
15th September 2006, 02:39 PM
Is anyone providing work instruction for proper use of n/c report. Meaning, how to fill out!!!

Under normal conditions, and what I have seen, the instructions are part of the document, identifying the specific blocks to be completed. Your nonconforming material procedure could also provide the instructions, in my opinion.

CarolX
15th September 2006, 02:49 PM
Is anyone providing work instruction for proper use of n/c report. Meaning, how to fill out!!!

I do - my top level (Manual) describe how we identify non-conforming material and who has authority for the different dispositions. My work instruction is a "how to" fill out the form, and the routing of the documents.