Corrective Action Effectiveness Verification Template
Closing a corrective action on the day the fix is implemented proves nothing. Auditors under ISO 9001 and AS9100 look for evidence that the action actually worked. This template records the metric, the monitoring window and the pass criteria, then the data and the decision.
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Corrective Action Effectiveness Verification Template
Corrective Action Effectiveness Verification
Company: Acme Precision Ltd CAPA reference: CAPA-2026-077
Problem and action
Original problem: Bore diameter out of tolerance on lots L24581 to L24590 caused by tool wear on boring bar after 400 parts.
Action implemented: Tool life limit set to 250 parts in the CNC control and the ERP routing. Preset sheet and tool change checklist updated. Implementation date: 2026-10-22
Verification plan
Metric: Bore diameter Cpk on 5-piece subgroups, plus customer complaints on this part Monitoring period: 90 days Pass criteria: Cpk at or above 1.67 for 3 consecutive lots and zero repeat complaints for the monitoring period.
Results
Cpk 1.82, 1.79 and 1.88 on lots L24610, L24627 and L24640. No repeat complaints in 90 days.
Evidence checked
| Evidence | Source | Reviewed (Y/N) | Comment |
|---|---|---|---|
| Inspection or SPC data | |||
| Customer complaint history | |||
| Updated procedure or work instruction in use | |||
| Operator awareness confirmed on the floor |
Decision
Effective, close CAPA Verified by: S. Rao, Quality Manager
Approvals
A starting point to adapt to your quality system. Define the metric and pass criteria before implementing the action, not after, so the check cannot be bent to fit the result.
Automate effectiveness data pulls
Optional: we can show how SPC and complaint data from your ERP can feed the effectiveness record automatically.
Optional. The tool and every export work without this. No spam.
How to use the template
Fill the metric, the monitoring period and the pass criteria when you approve the corrective action, so the test is fixed before any data arrives. After the monitoring period, record the results with real numbers and tick the evidence you reviewed. The decision field has three outcomes. Effective closes the record. Not effective reopens the root cause analysis. Extend monitoring applies when volume was too low to judge, for instance only one production lot ran in the window.
- Set pass criteria before implementation
- Use a measurable metric, not a feeling
- Check on the floor that the new method is used
- Record the lot numbers the data came from
Choosing a metric and period
Match the metric to the failure. For a dimensional defect, use process capability such as Cpk, or defect counts per lot. For a delivery or documentation failure, use recurrence count over a set number of orders. The period should span enough production to give the defect a fair chance to return: three lots or 90 days are common, but a low volume part may need six months. A result of zero recurrence over a short or empty period is not evidence, so state the volume produced.
Worked example
A worn boring bar caused oversize bores. The action sets a 250-part tool life limit in the control and the ERP routing. The verification plan requires a Cpk of at least 1.67 over three consecutive lots and no repeat complaints for 90 days. The results show Cpk values of 1.82, 1.79 and 1.88, with no complaints. The decision is effective, and the CAPA is closed with the SPC export attached.
Common mistakes
The usual faults are checking too early, using retraining as the only action and as the only evidence, and verifying only that the action was done rather than that it worked. Implementation is not effectiveness. Another fault is a metric the process cannot measure, such as a defect count without a defined inspection. Keep the SPC export or inspection report as an attachment and store the CAPA number against the lots reviewed.
Frequently Asked Questions
What is the difference between verification and validation of a corrective action?
Verification confirms the action was implemented and does not cause new problems. Validation or effectiveness confirms the action actually prevents recurrence. Many quality systems require both before closure.
How long should I monitor before closing a CAPA?
It depends on volume and risk. Three production lots or 90 days is a common starting point. Low volume or high risk products often need longer monitoring.
What if there is no recurrence but also no production?
That is not evidence of effectiveness. Extend the monitoring until enough units have been produced to give a fair test, and say so in the record.
Who should do the effectiveness check?
Ideally someone other than the CAPA owner, such as a quality engineer or manager, so the check is independent of the person who implemented the action.
Netray can pull the inspection and complaint history for a part from your ERP into a single effectiveness view, read-only.
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