The Japanese expression Poka Yoke (jap.: Avoid unintentional Fehlhandlungen) designates a principle consisting of several elements, which technical precautions and/or mechanisms to the immediate error uncovering and - avoidance covers. As an inventor of the principle Shigeo Shingo is considered in management circles. Poka Yoke corresponds as erroravoiding principle in biochemistry for over one century admitted "“key lock principle"”, which is used there for instance with the Duplikation the heiress formation for millions of years for error minimization.

By application "“key lock"” and/or a "“Poka Yoke"” - system can be achieved in a production process a zero-error quality. Thus this system applies contrary to the frequently used error controls as quality assurance measure.

Method

Starting point for Poka Yoke is the realization that no humans and also no system are able to avoid unintentional errors completely. With Poka Yoke by simple and effective systems it is usually ensured that Fehlhandlungen in the manufacturing process do not lead to errors at the final product. Poka Yoke aims at the use from usually technical aids. These solutions are usually economical and immediately importable.

In order to be able to exclude also a further occurrence from once discovered errors, Poka Yoke is used in connection with an inspection method, the SOURCE Inspection. Poka Yoke in combination with the SOURCE Inspection result in the methodology of the Poka Yoke system.

Examples

• have a left-hand thread and a right-hand thread therefore are impossible exchanging.
• Disk cannot wrongly be put around into the PC.
• Telephone plug (TAE) cannot wrongly be put in around.

History

The starting point for the development of the Poka Yoke of system with source of error inspection was for the Japanese Shingo, the mental "„father of "“this concept, with statistic quality control (SQC), after American type.

Toyota production system (TPS), with which a substantial component Poka Yoke is, is considered as keys for the market success of the Japanese automobile company.

Quotation of Shigeo Shingo

"“Errors are produced in the operating phase, and examinations can cause nothing else to find as the errors."”

"“Zero Defects = absolutely possible"”

Related links

• Detailed presentation over Poka Yoke

Literature

• Shigeo Shingo: Zero quality control: SOURCE Inspection and the Poka yoke system, Cambridge: Productivity press, ISBN 0-915299-07-0
• P. (Hrsg.), Stefan Errors with Poka Yoke avoid: Zero-error strategy for quality-conscious managers, Ulm: TQU publishing house, http://www.tqu.com/tqu-verlag/texte/workbookpokayoke.htm

Articles in category "Poka Yoke"

We found here 3 articles.

Related Websites

We found here 6 related websites.

• A Brief Tutorial on Mistake-proofing, Poka-Yoke, and ZQC
  A poka-yoke device is any mechanism that either prevents a mistake from being ... An example cited by Shingo early in the development of poka-yoke shows how ...


• Everyday Examples of Mistake-Proofing
  ... permission free of charge, if you will include a reference to www.campbell.berry.edu/pokayoke in your document or presentation. Return to Poka-Yoke Page ...


• Grout's Poka-Yoke Page
  Mistake-Proofing Literature Mistake-proofing and poka-yoke literature ... Mistake-Proofing Literature Using Poka Yoke (Mistake Proofing Devices) to Ensure ...


• Grout's Poka-Yoke Page
  Poka Yoke is a quality assurance technique used in Japan and aims to prevent defects as soon as possible...


• Poka Yoke
  Poka Yoke - definitions, examples and references from iSixSigma - The Six Sigma Quality Reference.


• Poka Yoke (Mistake Proofing)
  Poka Yoke and mistake proofing for Six Sigma Quality, total quality management TQM, ISO9000 and process improvement projects.