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DPU application for job shop

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  • #50455

    Ruddy
    Participant

    Hello,
    I am attempting to establish a quality “scorecard” for an equipment manufacturer that is essentially a job shop environment.  We perform 100% funtional tests on final product and document any issues found during testing/inspection.  I am considering calculating Dpu as a quality baseline.  Is DPU recommended for this type of environment?  If so, the next obvious question is; Once established as a baseline, how would I determine DPU “targets” or “objectives?”  Hope this last questions makes sense.
    Thank you

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    #173500

    Michael Mead
    Participant

    Defects per unit? It makes sense to me. Chart it using a u-chart. I am sure people will be shocked. I suggest you group your defects into a few categories. You can then use a Parteo ghart to prioritize the problems and go after them.
    Just reporting the defects should result in a little improvement, but going after the big ones on your Pareto chart should not be too hard either.
    The target will eventually be zero, right? Get some baseline data and use that as an average on your control chart. You will need to recalculate the limits often as the process improves.
    Good luck.

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    #173505

    Ruddy
    Participant

    Thanks Michael – the reason I inquired about ‘targets’ is because my company publishes monthy scorecards with “red, yellow and green” status regarding certain objectives (ie. On-time delivery > 98%, etc).  Although the target DPU will ultimately zero, this may not be realistic at this time.  Can DPU be converted into some kind of percentage? 
    Thanks

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    #173511

    Michael Mead
    Participant

    Michael,
    If you need a target, get some baseline information, find the average and reduce it by 20% per month. Since you are tallking about defects per unit, you don’t want a percentage–maybe a number smaller than 1, it depends on where you are now.

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    #173516

    Ruddy
    Participant

    Michael – thank’s for your advice and quick response

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