An NCR is not closed when the defect disappears from view; it closes only when the requirement, affected population, disposition, work performed and verification result remain reconstructable.
An inspector finds incorrect handle preparation on one operable sash. The factory adjusts that unit, sends a clean photograph and marks the issue closed. But the same machining program served other marks, several are already glazed and two are packed. The photo may show one local remedy; it does not define the requirement, contain the connected population or verify that the rework restored every affected characteristic. A useful NCR turns an observation into a controlled decision path without prematurely assigning cause or responsibility.
Disposition boundary: This guide does not diagnose a defect from a photograph, prescribe repair, determine design/code compliance, assign contractual liability, authorise use-as-is, or define universal acceptance or sampling criteria. The approved requirement sources and named technical, quality and contractual authorities govern every actual disposition.
1. Write the nonconformity against a controlled requirement—not an adjective
Record the physical object and state first: opening/unit/lot identity, location, production and packing status, drawing/work-order revision, date and observer. Describe what was observed in reproducible language and preserve suitable photos, measurements, instrument identity/status and method where relevant. Avoid 'poor workmanship' or 'wrong size' without the observable condition and comparison basis.
Then cite the exact requirement source and revision: approved drawing or schedule, specification clause, accepted sample criterion, product/process instruction, applicable standard as contractually invoked, or another authorised source. Separate a confirmed requirement mismatch from an observation that still needs technical interpretation. Do not invent a tolerance because the document is silent; raise the missing criterion through the proper authority route.
ISO's guidance on ISO 9001 documented information identifies records of nonconformities, actions, concessions and authorities among evidence retained for control of nonconforming outputs. The useful project principle is traceability of decision—not copying proprietary standard text into an NCR.
| Field | Evidence to enter | Invalid shortcut |
|---|---|---|
| Object/state | Unit/opening/lot, location, production and package state | 'Batch problem' without identities |
| Observation | Reproducible condition and evidence reference | 'Bad quality' |
| Requirement | Controlled document, revision, clause/detail | Uncited preference |
| Comparison/method | Actual result and approved method/criterion where applicable | Invented tolerance or test |
| Immediate status | Held, segregated, shipped or other verified state | Assumed containment |
| Authority/owners | Issuer, disposition owner and action owners | Whoever is available in chat |
2. Contain both the physical output and the information that can reproduce it
Physical containment prevents use, packing, shipment or installation of identified suspect output. Choose controls appropriate to the product and site—segregated location, visible status, blocked system transaction or guarded package relationship—without creating damage or a safety hazard. Record the actual location and responsible custodian; an NCR number alone does not stop movement.
Information containment stops recurrence while the scope is assessed. Hold the implicated drawing, work order, material release, cut list, CNC program, hardware pick, glass order, inspection template or label only where evidence connects it to the event. Preserve the version used; do not overwrite it before the investigation can reconstruct what happened.
Define the potentially affected population from causal and configuration links: same program, machine/setup, component lot, supplier lot, operator/process window, drawing revision, opening family, rework method or time interval. State the evidence and uncertainty. Expand or narrow as facts arrive. Neither 'only the failed sample' nor 'the whole order' is defensible without a basis.
| Potential link | Population query | Evidence source | Temporary state / owner |
|---|---|---|---|
| Configuration | Which marks share the feature/requirement? | Released mark and revision register | [hold scope / owner] |
| Program/tool/setup | Which units used the same instruction or setup? | Production/program records | [hold scope / owner] |
| Material/component lot | Where else was the lot consumed? | Receiving and issue traceability | [hold scope / owner] |
| Time/process | What was produced between verified good states? | Workstation/process records | [hold scope / owner] |
| Packing/shipment | Which suspect items are closed or dispatched? | Packing/loading register | [intercept/escalate / owner] |
| Site installation | Which items may already be installed? | Receiving/allocation evidence | [notify/investigate / owner] |
3. Separate correction, rework, repair, concession and rejection
Use the project's defined terms. A correction addresses a detected nonconformity; rework aims to make the output conform to requirements; repair may make it acceptable for intended use without restoring every original requirement; concession or use-as-is accepts a specified nonconformity under named authority; scrap/reject prevents intended use. These routes have different technical, evidence and contractual consequences and must not be collapsed into 'fixed'.
Before work starts, obtain a disposition that names affected identities, requirement, method or controlled instruction, materials/tools, competent role, safety and protection controls, dependent characteristics to recheck, records and authority. If engineering assessment is needed, keep the unit held until it exists. A sales promise or workshop habit is not an engineering disposition.
Evaluate collateral effects. Hardware re-machining can affect reinforcement, fastener engagement, finish and operation. Reglazing can affect beads, gaskets, blocks, sealant and glass condition. Finish touch-up can affect appearance, coating integrity and warranty. This article does not approve any of these methods; the disposition must identify the actual risks and evidence.
| Route | Intended outcome | Evidence needed before action | Closure question |
|---|---|---|---|
| Correction/rework | Restore stated requirement | Approved instruction, affected IDs, process controls | Was conformity objectively reverified? |
| Repair | Make acceptable for intended use under approved basis | Technical assessment and named authority | Were departures and service implications recorded? |
| Concession/use-as-is | Accept specified departure | Scope, risk/impact assessment and authorised acceptance | Is every affected item and condition explicit? |
| Replacement | Substitute controlled conforming output | New identity/configuration and original disposition | Are duplicate/obsolete items controlled? |
| Reject/scrap | Prevent intended use | Authorised status and physical control | Can it re-enter production or shipment? |
| Return to supplier | Transfer for controlled resolution | Custody, identity and status | Does return avoid falsely closing the NCR? |
4. Reinspect the work performed and the affected population
Reinspection starts from the NCR and authorised disposition, not from a request for a better photograph. Confirm identity, work record, operator/approver where required, material or replacement parts, current configuration and preservation of traceability. Verify the original characteristic using the approved criterion and method, then check collateral characteristics named by the disposition.
Define coverage according to risk and evidence. Every reworked unit may need verification while broader potentially affected output may follow a separately authorised plan. If attribute sampling applies, use the project's selected ISO 2859-1 or other contractual route with defined lot, AQL, inspection level, plan and switching rules; do not reuse the original sample automatically or invent an AQL after seeing defects.
Keep verification sufficiently independent from performance of the work as the quality plan requires. Record actual results, equipment status where relevant and failed reinspection. A failed reinspection returns the item to controlled nonconforming status and can expand scope; it is not edited out of the history when a later attempt passes.
| Control | Record | Verifier result | If not proven |
|---|---|---|---|
| Identity and baseline | Unit/opening, revision, NCR and disposition | Match / mismatch | Hold and reconcile |
| Work performed | Steps, date, responsible role, parts/materials | Complete / incomplete | Return to disposition owner |
| Original characteristic | Approved method and actual result | Conforming / nonconforming | Reopen/continue NCR |
| Collateral characteristics | Checks derived from actual intervention | Conforming / nonconforming | Contain affected output |
| Traceability/labels | Old/new component and package relationships | Preserved / broken | Hold movement/release |
| Population coverage | Reworked and connected suspect units | Complete / gap | Keep gap explicitly open |
5. Close three loops: output, population and recurrence
Output closure proves the named units reached an authorised disposition and the required verification passed. Population closure proves all potentially affected units were located and resolved, including packed, shipped or installed items—or lists the unresolved identities and escalation. Recurrence closure addresses cause and corrective action when required. A corrected sample can close none of the other two by implication.
Root-cause work should distinguish occurrence cause from escape cause: what allowed the condition to be created and what allowed it to pass existing controls. Test hypotheses against records and counterexamples. Corrective action should name the controlled change, owner, implementation evidence and effectiveness check on a later relevant population. Training attendance or a revised checklist is implementation activity, not effectiveness by itself.
Final NCR status should include requirement, affected population, containment, disposition authority, work evidence, reinspection results, concessions, residual/open items, linked corrective action and release authority. Preserve the original observation and failed attempts. Close administratively only after the defined evidence exists; otherwise retain an honest open or conditionally controlled state.
| Closure loop | Proof required | Open-state trigger |
|---|---|---|
| Requirement | Controlled source and objective comparison remain linked | Criterion missing or disputed |
| Affected population | Search basis, located identities and final states | Packed/shipped/installed scope unknown |
| Disposition | Named authority, scope and approved instruction | Verbal or generic 'repair' |
| Reinspection | Actual results for original and collateral characteristics | Photo only or coverage gap |
| Release | Authority and destination/package status updated | Held identity can still move |
| Recurrence | Cause evidence, implemented action and effectiveness check where required | Action exists but effectiveness unknown |
FAQ
Is an NCR the same as a defect report?
An NCR should connect an observed output to a controlled requirement and decision path. A defect observation without that basis may be an input, but it is not yet a complete NCR.
Can the factory close an NCR with photos?
Photos can support identified observations, work and reinspection, but closure also requires affected-population control, authorised disposition and objective verification against the requirement.
Does rework automatically require 100% inspection?
This article sets no universal rule. The authorised plan must define verification of every reworked item and any broader population based on risk, evidence and applicable requirements.
Who can approve use-as-is?
Only the authority defined by the contract, technical governance and applicable requirements. Supplier convenience or schedule pressure does not create authority.
When is root-cause corrective action necessary?
Use the quality plan and risk assessment. Repetition, systemic process links, significant consequences or an ineffective control can justify formal corrective action; do not fabricate a cause merely to complete a form.
Continue the project review
Connect this guide with the proposed window and door systems, then review how Cavorlen approaches manufacturing and quality control. When your schedule is ready, send it through the project review form.
Official sources used
ISO — Guidance on documented information for ISO 9001:2015 ↗ISO — ISO 10007:2017 configuration management guidance ↗ISO — ISO 2859-1:2026 sampling procedures for inspection by attributes ↗ISO — ISO 10005:2018 guidelines for quality plans ↗Related buyer guides
This article does not act as an NCR, engineering instruction, repair method, concession, root-cause report or release certificate. It supplies no window tolerances, repair materials, machining values, test pressures, curing times, AQLs or automatic expansion rules, and makes no claim about Cavorlen's factory procedures or capabilities.