Defectives (ppm) coming from Visual Inspection

I

ilaria

#1
Pls, I don't know if anyone can help me.
The question is related to visual inspection.
I know that the result of visual selction cannot be 0 defect (0 ppm) but the question is : is there a sort of "typical level" of defectiveness that we can use as reference ?
Thanks in advance for helping me
 
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Jim Wynne

Staff member
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#2
Re: defectiveness (ppm) coming from visual selection

Welcome to the Cove. :bigwave:

No two processes are alike, so you won't find any sort of typical defect level that will be helpful or that won't be potentially misleading. The best you can do is to understand the sources of variation in your processes (including measurement or appraisal variation) and work to reduce them to a level that's acceptable in your own situation.
 
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