Zero Quality Control is an method/approach for achieving zero defects in an organization. Zero gives reference to the objective of ZQC which is to produce products/services with zero defects. The approach was first out lined in the book Zero Quality Control: Source Inspection and the Poka Yoke System which outlined the main concepts of the ZQC approach and included many case studies.
Poka Yoke is a series of techniques used to error proof, mistake proof or create a fail-safe process that is designed to prevent errors, defects or mistakes. Even more specifically a poka-yoke is any mechanism in a lean manufacturing process that helps an equipment operator avoid mistakes. Its purpose is to eliminate product defects by preventing, correcting, or drawing attention to errors as they occur. The concept was formalized, and the term adopted, by Shigeo Shingo as part of the Toyota Production System.
Reference: Wikipedia - Poka-Yoke
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