React to an out-of-control SPC point

Practice the sequence you already learned for “React to an out-of-control SPC point” until the order feels automatic. Drill the Western Electric / AIAG SPC reaction order. Production is not restarted until the assignable cause is recorded and the next points are in control.

1. Identify which control-chart rule was violated.
2. Stop or contain the process for the affected characteristic.
3. Segregate product made since the last in-control point.
4. Investigate and record the assignable cause.
5. Apply the corrective action.
6. Confirm the next points are in control.
7. Restart only after the reaction checklist is signed.