Error and Mistake-Proofing (also known . as ai???Poka Yokeai???)are one of the improvement tools used to ensure products and processes are effective and completed correctly the first time. They are designed to prevent the occurrence of nonconformance. The goal of error/mistake proofing is to reduce scrap, rework, and improve process performance and eliminate nonconformance due to inconsistent processes, methods, materials, etc .
If an organization is experiencing high levels of scrap and rework, Error and Mistake Proofing provides tools that will help identify cause(s) of variation these problems and Ai??Ai??reduce production losses.
When to Use Mistake Proofing
- When there is a manufacturing process step identified where human error can cause mistakes or defects to occur, especially in processes that rely on the operatorai??i??s attention, skill and/or experience.
- In a service process, where the customer can make an error that can affect the output.
- When a minor error upstream in the process causes major problems downstream in the process.