Free Trial

Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.

  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint

15.17. Mistake-Proofing

Mistake-proofing is a technique which is used to prevent errors being converted into defects. The concept was developed by Shingo (1986). The technique is based on the assumption that, no matter how observant or skilled people are, mistakes will occur unless preventative measures are put in place. Shingo argues that using statistical methods is tantamount to accepting defects as inevitable, and that instead of looking for and correcting the causes of defective work, the source of the mistake should be inspected, analysed and rectified. He places great emphasis on what he calls source inspection, which checks for factors which cause mistakes, and then on using poka yoke or mistake-proofing devices to prevent their recurrence.

Mistake-proofing has two main steps: preventing the occurrence of a defect and detecting the defect. In short the purpose is to stop processes from operating when conditions exist that will lead to defects. The system is applied at three points in the process:


  

You are currently reading a PREVIEW of this book.

                                                                                                                    

Get instant access to over $1 million worth of books and videos.

  

Start a Free Trial


  
  • Safari Books Online
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint