Practice guide
Finding the Requirements for a Product
A disciplined route from product identity and intended use to a documented federal requirement register.
Read the guideFederal regulation
Part 21 links nuclear supply quality to the identification, evaluation and reporting of defects and failures to comply. Its application turns on the regulated activity, basic component and potential safety significance. Supplier controls should preserve the information needed to evaluate a deviation, communicate with the purchaser and identify the responsible reporting organization.
Read the scope and definitions before treating an ordinary commercial discrepancy as a Part 21 matter. The regulation addresses covered facilities, activities and basic components, including relevant design, analysis, inspection, testing, fabrication and consulting services. Commercial-grade items and their dedication require particular attention. Coverage is a technical and regulatory determination, rather than a label attached to every purchase.
The rule defines terms including deviation, defect, substantial safety hazard and failure to comply. A supplier’s initial discovery may require evaluation before the reporting conclusion can be reached. Record what is known, what remains uncertain and which safety function might be affected. Avoid closing the issue merely because the item passed an unrelated production test.
Part 21 contains procedures for evaluation, notification and reporting. Organizations need an internal route that reaches personnel able to assess the issue and management responsible for the response. Use the current rule for required timing and report content. Purchaser communication and statutory reporting are connected activities, but one should not be assumed to replace the other.
A useful internal record identifies the component, supplier, procurement reference, affected population, discovery circumstances and potential consequence. Keep the analytical basis for the disposition with supporting drawings, test results and correspondence. Where another organization must complete the evaluation, the handover should identify unresolved technical questions rather than simply forwarding an unexplained rejection notice.
NCQM practice consideration: consider whether the same design feature, material lot, calculation or process affected other deliveries. Establish a controlled search through relevant records and document its limitations. A correction to one item may leave a broader condition unresolved. Link containment and corrective action to the evaluation, while retaining the original evidence of the condition.
Part 21 has interfaces with other nuclear licensing and reporting requirements. Check the current text and the applicable license or authorization rather than relying on an old summary. A quality management certificate, customer acceptance or commercial warranty does not determine reportability. Technical staff and the organization’s responsible regulatory personnel should resolve the applicable obligation together.
Sources checked 2026-10-19. This is the review date for this profile, separate from any legal effective or compliance date.
Regulatory text
10 CFR Part 21www.ecfr.gov
Agency explanation
NRC reporting requirements informationwww.nrc.gov
Practice guide
A disciplined route from product identity and intended use to a documented federal requirement register.
Read the guidePractice guide
A practical examination of identity, method, scope, results and the meaning of a conformity claim.
Read the guide