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POke-yoke

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  • #46049

    Steve Bohlman
    Member

    has anyone ever heard of the concept or phrase “One over One?” related to poka-yoke?  If so, can you explain it to me?  thanks!

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    #151696

    Wayne Marhelski
    Member

    I don’t recall hearing that phrase as it relates to poka-yoke. Could it be the use of a “Master Part”, possibly a piece of sheet metal in the flat, which would then be used as the basis of comparison for parts coming out of the operation. In this case the newly produced part would be stacked on top of the “Master”, for a verification check.
    I’ve seen similar practices done before, but I wouldn’t consider it poka-yoke.
    Wayne

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    #152181

    Six Sigma Shooter
    Member

    The only place I’ve heard the term used.  This definition comes from a university’s definition of one-over-one for payment authorization.
    “The one-over-one approval requirement stems from the concept that no one should be placed in a position where they can cause (authorize) a payment to be made to themselves or to their benefit. Obtaining a signature from a supervisor would indicate that a review of the proposed expenditure is legitimate. One-over-one approval is provided by the claimant’s direct supervisor (one-over-one cannot be delegated).”

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    #152180

    Steve Bohlman
    Member

    Wayne
     
    thanks for the response.  I would agree with you, if “One over one” if as you desribe it, that’s not true Poka-Yoke.  More of an immediate checking on something rather than a mistake proofing.  No one else has yet responded so I’m not sure what it is.
     
    Steve

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