Non-Conformance Report (NCR)

A non-conformance (also called non-conformity, NC) is any deviation from specified requirements — either a process deviation (work not done per specification) or a product defect (constructed work not meeting design). Per ISO 9001 + IS 14687, non-conformances are formally documented in Non-Conformance Reports (NCRs) and tracked through corrective and preventive action processes. Used in formal QA/QC programs to ensure systematic resolution of defects and continuous improvement.

Categories of non-conformance: (1) Material non-conformance — material delivered not meeting specification (cube test failure, rebar fy below specified, brick water absorption above limit). (2) Workmanship non-conformance — work executed not per design (rebar misalignment, formwork tolerance exceeded, weld defects). (3) Documentation non-conformance — required documents missing, late, or incomplete (test certificates, mill test certificates, method statements). (4) Process non-conformance — agreed procedures not followed (concreting sequence, curing duration, inspection frequency).

Non-conformance handling: (a) Identification — by site engineer, third-party inspector, or QC team. (b) Documentation — NCR raised with description, location, reference standard, severity. (c) Containment — stop further work in the affected area. (d) Root cause analysis — why the non-conformance occurred (worker, supervision, material, process, equipment). (e) Corrective action — fix the immediate defect (re-pour, repair, replace). (f) Preventive action — prevent recurrence (training, process change, inspection). (g) Verification — confirm corrective and preventive actions are effective. (h) Closure — final sign-off when verified. Indian project practice: routine residential rarely formalises NCRs; major commercial and infrastructure projects track NCRs centrally with periodic statistics review. The most-overlooked aspect of Indian non-conformance handling: preventive action is often skipped — defects are repaired but root causes are not addressed, leading to recurrence. Effective NCR management requires both corrective AND preventive action.