Changeovers and production shifts rely on shouting: How do checklists, first-piece verification, and downtime root-cause analysis get into the system?
Line-change times are often excessive due to unclear parts-assembly readiness, invisible procedures, and arbitrary release of the first piece. By linking changeover work orders, parts-assembly access control, step-by-step confirmation, and first-piece release, and measuring time variability with standard deviation, we can determine whether processes are under control.