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poka yoke
- 1. Poka Yoke (Mistake Proofing) BySheetal Verma
- 2. Concept Human Errors orMistakes are Resolved Or Proofed by employing tools or systems
- 3. Categories of PokaYoke Resolving Proofing Beep, if side stand is put on by mistake Vehicle does not start if side stand is put on Stops operation, when door opened Oven door does not open during operation
- 4. History & Evolution •Mr Shigeo Shingo, the founder of Poka Yoke (mistake proofing. Originally Baka Yoke - fool proofing) realized the importance of proofing & devised this tool to achieve zero defect quality • Due to proven results, even the Standard ISO / TS16949 : 2002 (E) includes under clause 8.5.2.2 - “The organization shall use error-proofing methods in their products and services” • Poka Yoke finds application not only in manufacturing and service domain; but also in development and office administration.
- 5. Stages of PokaYoke Define Describe and define the problem Measure Research the frequency of the problem Analyze Find the cause by carrying out problem analysis Improve Develop and implement a solution Control Measure the effects of the adjustment 1 2 3 4 5
- 6. 3 types ofPoka Yoke 1. Visual aids These aids are clear and show the work instructions. These may be pictograms in a user manual or a traffic sign that shows a restriction or warning. 2. Visual control These refer to directing behavior and warning in case of deviations. One example would be a traffic sign that lights up red when drivers are speeding and green if they stick to the speed limit. 3. Fail-safes They force the user to either do or not do something. This can be road closures for motorway maintenance, for instance. Arrows on signs force drivers to go from 3 to 2 and from 2 to 1 lanes. The arrows are followed by red Xs on the signs until 2 of the 3 lanes are closed.
- 7. Some examples ofPoka Yoke Microwaves, washing machines Elevators Spell-check functions Car safety features Power outlets and USB plugs
- 8.