Direct Answer
A Non-Conformance Report (NCR) is a formal QC document issued when a fabricated item or process deviates from the applicable code, specification, or approved drawing. When you receive or issue an NCR, you must document the non-conformance, identify the root cause, determine the disposition (repair, replace, use-as-is with engineer approval), and implement corrective action to prevent recurrence.
Full Explanation
NCR disposition options: (1) Repair — correct the non-conformance and re-inspect. (2) Rework — disassemble and re-fabricate the affected portion. (3) Replace — scrap the non-conforming member and fabricate new. (4) Use-as-is (UAI) — submit to the engineer with a justification that the non-conformance does not affect structural performance; engineer issues written concurrence. UAI dispositions must be approved by the engineer before the member is incorporated into the structure. NCRs are part of the project QC record and must be maintained through project close-out.
What This Means for Your Shop
An NCR is not a catastrophe — it's evidence that your QC system is working. Shops that have zero NCRs on complex projects are either extremely good or not inspecting carefully enough. The response to an NCR matters more than the NCR itself: fast identification, clear disposition, and effective corrective action show a mature QC system.
Common Mistakes
Closing an NCR by 'repairing' the non-conformance without identifying the root cause. If the root cause isn't addressed, the same problem will recur on the next member.
Recommended Process
For every NCR: (1) Stop work on similar conditions until root cause is identified. (2) Document the non-conformance completely with photos and measurements. (3) Submit a disposition to the engineer within 24–48 hours. (4) Implement corrective action. (5) Re-inspect and close the NCR with inspection sign-off. (6) Review with the team to prevent recurrence.