Defining Inspection Frequencies

J

jlhutt

#1
I had an auditor write us up in a internal audit for not defining inspection frequencies. Can someone tell me where it says you have to do that in the standard, I sure did not see it.

All product prior to leaving does get an audit for dimensions and a certification sent with the product.
 
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Jen Kirley

Quality and Auditing Expert
Staff member
Admin
#2
Re: Inspection Frequencies

Can you please tell us what standard you are operating to?

For example, TS16949 refers to inspection sampling plans.
 
Last edited:

Stijloor

Staff member
Super Moderator
#3
Re: Inspection Frequencies

I had an auditor write us up in a internal audit for not defining inspection frequencies. Can someone tell me where it says you have to do that in the standard, I sure did not see it.

All product prior to leaving does get an audit for dimensions and a certifiicataion sent with the product.
The Standard says: "This shall be carried out at appropriate stages of the product realization process in accordance with the planned arrangements."

You determine what the appropriate stages are.

It can not be: "as we feel like it" or "when we have time."

Bottom line: you determine and then stick with it.

Stijloor.
 
U

Umang Vidyarthi

#4
Re: Inspection Frequencies

I had an auditor write us up in a internal audit for not defining inspection frequencies. Can someone tell me where it says you have to do that in the standard, I sure did not see it.

All product prior to leaving does get an audit for dimensions and a certification sent with the product.
Inspection frequencies depend on standards or as per customer requirements. In absence of the two, you may device your own based on explainable logic. You will find some guidance here:

http://www.variation.com/techlib/standard.html

http://www.smtl.co.uk/~pete/sampling.pdf

http://www.itl.nist.gov/div898/handbook/pmc/section2/pmc22.htm

Umang :D
 
#5
Inspections of product are supposed to be performed to confirm conformance to specification and to control the process, before non-conforming product is produced (The ISO requirements are about prevention, not detection, remember?).

Is it correct and appropriate to use process capability to define the frequency of inspections to detect any adverse trends in capability (common and special cause) which can cause defects. Therefore your inspections should be performed at a frequency to detect trends and shut the process down/reset the process or some other action.

Your auditor is somewhat on the right path, because it's linked with the use of statistical techniques, hence frequency. So, stating you check one in 10 parts or every 30 minutes of production isn't really going to fly (which is what Jan's talking about - when you can get to it.....kind of thing)
 
V

vanputten

#6
Hello AndyN:

No standard was identified as a requirement so we have no idea to what requriement the internal audit was performed. We also have a sense of the frequency. All product is audited at least once prior to leaving.

Upon what is your posting based since we have no idea what the audit requirement was? Even if the audit requirtement is ISO 9001, I am not sure I agree with your posting. In ISO 9001, section 8.2.4 spells out the the requirements for monitoring and measuring product. The only frequency requirement is "at approapriate stages." How do we know what is or is not appropriate for the poster? We don't know anything about the organization, the product or the processes.

Finally, product inspections do not prevent non-conforming product. Product inspections identify non-conforming product. Product inspections do not prevent anything except maybe escapes of non-conforming product. Inspections do not prevent the realization of non-conforming product. Therfore, inspections cannot be performed before non-confoming product is produced.

Trending or statitiscal analysis of the data gathered during product inspection may allow the organization to prevent the realization non-conforming product. It is the analysis of the data gathered during the inspection that may provide the prevention, not the inspection itself.
 
#7
Hello AndyN:

No standard was identified as a requirement so we have no idea to what requriement the internal audit was performed. We also have a sense of the frequency. All product is audited at least once prior to leaving.

Upon what is your posting based since we have no idea what the audit requirement was? Even if the audit requirtement is ISO 9001, I am not sure I agree with your posting. In ISO 9001, section 8.2.4 spells out the the requirements for monitoring and measuring product. The only frequency requirement is "at approapriate stages." How do we know what is or is not appropriate for the poster? We don't know anything about the organization, the product or the processes.

Finally, product inspections do not prevent non-conforming product. Product inspections identify non-conforming product. Product inspections do not prevent anything except maybe escapes of non-conforming product. Inspections do not prevent the realization of non-conforming product. Therfore, inspections cannot be performed before non-confoming product is produced.

Trending or statitiscal analysis of the data gathered during product inspection may allow the organization to prevent the realization non-conforming product. It is the analysis of the data gathered during the inspection that may provide the prevention, not the inspection itself.
?????????????:confused::confused::confused::confused:

Dirk. I can't even start to answer. I have no idea how you got here from my post! You are reading things into what I posted which aren't there, my friend!

My understanding is that an internal auditor 'sprung' this finding about inspection frequencies on the OP. I tried to answer based on my experience of running an inspection crew.........

I don't see where you're coming from, here..........:rolleyes:
 
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