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Former Member

Results lying in Range but still Material gets Valuated as a Major Defect

Hello

I have a Material whose Inspection plan is having Long term MIC.. When I go to QA32 the status of the Lot is LTIN(Long Term Inspection)STIC(Short Term Inspection Completed)MSUB(Marked for Subsystem)SPCO(Stock Posting Completed)STUP(Statistics updated)..

The Problem is The Quantitative data for the MIC is:- Lower limit = 9 Target value = 10 & Upper Limit = 11.

When I am entering the result as 9.3 the system is valuating as a major defect. Where as it lies between the specified range.

Can someone please help me out of this as to why the system is valuating it as a Major Defect even though the Results are lying in a Specified Range as defined in Long Term MIC.

Abhishek J Singh

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2 Answers

  • Best Answer
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    Former Member
    Sep 25, 2009 at 05:28 AM

    Hii,

    If the MIC value is rejected eventhough it is within spec, then check for the valuation mode in the Sampling procedure. Bcoz, Valuation mode have controls on the Sample size and its relation with acceptance no and Sampling Factor size. Eventhough u have defined the spec values , acceptance and rejection scenario get defered.

    with regards,

    K.Lokesh.

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    • Former Member Former Member

      Hii,

      The actual problem lies in ur Valuation mode. If ur valuation mode is SPC Inspection , system does'nt valuate ur samples based on the Spec. Instead it valuates ur sampling or characteristics based on the action limits of ur control charts. In SPC inspection . if the action limits is violated, then the charcateristics or samples is rejected. Why u choose ur valuation mode as the SPC Inspection? Whether u have any specific scenario.for that?. I think this will solve ur problem. Valuate this solution.

      with regards,

      K.Lokesh.

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    Former Member
    Sep 24, 2009 at 07:41 PM

    Hi

    check the specification in MIC is same like Inspection plan?

    did u changed the spec limit in Plan?

    Sami

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    • Former Member Former Member

      Hello Sujit

      I have checked other MIC also having same characteristics. They were not having any problems & all the MIC are marked as Incomplete copy model.

      Also None of the MIC's have Lower & Upper limits maintained. The Lower & Upper limits are maintained in Insppection plan.

      The defect codes are also maintained at plant level & I have not changed that.

      Abhishek