Poka-Yoke (Error Proofing) & Quality Assurance Systems
Operational Logic
Making it physically impossible to commit an error.
Implementation Levels
Prediction (Prevention) and Detection.
Strategic Goal
100% Quality, Zero Rework, and Enhanced Operator Safety.
Error Proofing & Control Strategies
Preventing incorrect assembly using physical inhibitors (jigs, fixtures) in processes prone to human error,
Instant detection of missing parts or misalignment using limit switches and proximity sensors,
Implementing software and mechanical interlocking systems that mandate correct sequencing of steps,
Simplifying complex operations through visual coding and color-matching methodologies,
Eliminating variation through the rigorous use of checklists and standard work instructions.
Poka-Yoke Toolkit
Mistake Proofing, Fail-Safe Design, Contact Methods, Fixed-Value Methods, Motion-Step Methods, Jidoka, Visual Factory, Zero Quality Control (ZQC), Sensors and Alarms, Warning vs Control Poka-Yoke, Error Identification, Prevention at Source, Root Cause Analysis.