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  QS-9000
  Inspection Sampling Plan

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Author Topic:   Inspection Sampling Plan
Deb Weissler
Lurker (<10 Posts)

Posts: 9
From:Newport News, VA USA
Registered: Nov 98

posted 16 November 1998 09:36 AM     Click Here to See the Profile for Deb Weissler   Click Here to Email Deb Weissler     Edit/Delete Message   Reply w/Quote
Under the previous QS-9000 revision (2nd) our company applied the Chrysler 'Lot Inspection Sampling Table' to inprocess and final (outgoing) inspection, and since we test all product 100% we felt we adequately met this requirement. We did not, however, apply this table to Receiving Inspection, chossing our own sample size based upon supplier performance and C=0. Now Chrysler's PSO requirement is spelled out in QS-9000 (3rd edition)& PSO clearly states in section 6) Incoming & Outgoing Material Qualification/Certfication Plan that the sampling table applies. This will impose a huge burden on RI at a time when our customers are pushing to REDUCE RI, not increase that activity. Any thoughts?

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Marc Smith
Cheech Wizard

Posts: 4119
From:West Chester, OH, USA
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posted 17 November 1998 03:03 PM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
Have you spoken with your Chrysler rep about it yet?

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Deb Weissler
Lurker (<10 Posts)

Posts: 9
From:Newport News, VA USA
Registered: Nov 98

posted 17 November 1998 03:24 PM     Click Here to See the Profile for Deb Weissler   Click Here to Email Deb Weissler     Edit/Delete Message   Reply w/Quote
It is Chrysler SQA who is stating this requirement. In the past, Chrysler accepted the sampling plan as applying to outgoing product inspection only. Now SQA is imposing the PSO manual and its Chysler-established sampling plan for RI in lieu of our previous established quality system procedure. As I see it, the danger of a customer imposed sampling plan is that with multiple customers, a company could conceivably have multiple sampling plan requirements. Many of our parts are interchangeable, regardless of customer. In the past we based our RI sampling on supplier delivered product. Inspecting 125-200 o-rings or stampings because the sampling plan chart requires it is not cost effective.

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Marc Smith
Cheech Wizard

Posts: 4119
From:West Chester, OH, USA
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posted 01 August 1999 09:29 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
No one commented on this when posted last November. Anyone have any comments now that some of the 3rd edition issues have been addressed?

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Dawn
Forum Contributor

Posts: 245
From:St. Marys, PA
Registered: Sep 98

posted 12 August 1999 04:47 PM     Click Here to See the Profile for Dawn   Click Here to Email Dawn     Edit/Delete Message   Reply w/Quote
This is kinda the same subject, but different topic.
We use three pieces for setup inspection and in-process checks
The auditor states we shall determine why 3 pcs. is a statistcally sound sampling plan or use 4 or 5 samples instead. The QS SPC book does not state what makes 4 or 5 pieces statistically sound-it just states to use it. How do I determine 3 pieces, 4 or 5 are statistically sound? OC curves and the like are only confusing me.

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