What is the difference between corrective and preventive action?
Corrective action fixes an existing non-conformance found during an inspection. Preventive action addresses root cause to stop recurrence. ISO 9001 programmes document both. Inspection software should link the original finding, corrective work, and any preventive follow-up in one traceable chain for auditors. A useful way to separate them is by the question each answers: corrective action asks how this specific fault gets put right, while preventive action asks why it happened and what process change stops the next one. A leaking valve gets a corrective repair, but if three valves fail the same way, the preventive action might be a revised maintenance interval or a supplier change, and both should trace back to the inspections that surfaced them.
