Poka Yoke Characteristics

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Characteristic of POKA-YOKE As you may have seen, poka-yoke implementation can come in any form of activities. They are simple, easy to understand, practical, logical and they are inexpensive to implement and yet effective. More importantly, they adopt the philosophy of prevention rather than cure to fix issues. A completely new attitude with POKA-YOKE Through out my dealing with internal as well as external suppliers’ quality issue and failure analysis, a majority reported a large number of corrective actions were lamed “cautioning and retraining the operators”. The admonition to “be more careful”, “pay attention” and “please ensure” are never effective in human related operation especially in operation involving repetitive actions. Such…show more content…
• Misunderstanding of SOP (caused by ambiguous standard operating procedure). • Lacking of experience (especially for more difficult process and new operators). • Fatigue (Tiredness of human body) • Bad motive (willful in ignoring rules and procedure, sabotage) However, not all are at loss, though. The poka-yoke presented us with a whole new attitude towards preventing errors. The characteristics of such new attitudes embrace: • Doing thing right the first time • Making wrong actions difficult • Prohibiting next step of actions when current step is improper • Making it possible to reverse action (to unto a wrong action) instantly. • Making it obvious when errors occur Out of these characteristics are two poka-yoke approaches that a product may adopt, based on the level of technology and implementation difficulties. They both work on the concept of detecting the errors before defects…show more content…
We will examine each one of them by their distinctive way of dealing with irregularities Contact Method works by detecting whether a sensor (an important part of the poka-yoke device) makes contact with the targeted object within a process. An example is the screw-fastening machine using contact method as explained earlier. As the screw is being fastened, it works its way through the threaded hole. The fastening process is only considered complete when leading end of the triggers a sensor by blocking the beam of light from a sensor. Refer to Figure 7.4

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