In nuclear quality programs, not every supplier can be used for safety-related work. Before a nuclear organisation can procure safety-related items or services from a supplier, it must verify that the supplier has a quality assurance program capable of meeting the requirements of NQA-1 and the applicable procurement specifications. This process is supplier qualification, and it is required under NQA-1 Requirement 7 and 10 CFR 50 Appendix B Criterion VII. Qualified suppliers are maintained on a Qualified Suppliers List (QSL), also called an Approved Vendors List (AVL), and must be re-evaluated periodically to retain their qualification.
Qualification methods
NQA-1 and Appendix B recognise several methods by which a buyer can qualify a supplier. The appropriate method depends on the safety classification of the item being procured and the supplier's existing certifications.
An on-site audit of the supplier's facility, QA manual, procedures, and records. The most rigorous qualification method, typically required for safety-significant procurements.
Inspection of products at the supplier's facility during fabrication. Can substitute for or supplement a QA program survey for specific item types.
Qualification based on documented satisfactory past performance supplying the same or similar items. Requires a sufficient history of NCR-free deliveries.
Acceptance of supplier certificates (e.g. ASME N-stamp, CSA N299 registration) as evidence of QA program adequacy. Must be verified as current.
For commercial-grade items not originally manufactured for nuclear use, a defined process to verify the item meets safety-related requirements before dedication for nuclear use.
Qualification is item-scope specific: A supplier qualified to provide one type of safety-related item is not automatically qualified to provide a different item type. The QSL entry should specify the scope of qualification, what items or services the supplier is approved to provide.
Maintaining the QSL and ongoing surveillance
Initial qualification is not a permanent status. NQA-1 Requirement 7 requires buyers to maintain their QSL by re-evaluating suppliers on a defined frequency and whenever there are indicators that a supplier's program may have changed. Common surveillance activities include periodic re-surveys, review of supplier-generated NCRs, performance monitoring based on delivery quality, and follow-up on any regulatory actions taken against the supplier.
A supplier's qualification lapses if re-evaluation is not completed before the expiry date. This creates a compliance gap that buyers often do not discover until they need to place a new order, at which point the procurement must be placed on hold until re-evaluation is complete or an alternative qualified supplier is identified. In programs with large QSLs, managing expiry dates manually is one of the most common sources of procurement delays.
The obligation to surveil also extends to significant events at the supplier: changes in ownership, key personnel, facility location, manufacturing processes, or scope of work all trigger a re-evaluation requirement under NQA-1. A supplier that was well-qualified two years ago may have changed substantially, and the buyer remains accountable for the quality of what it receives.
The supplier perspective: getting and keeping qualified
For suppliers seeking nuclear qualification, the process begins with understanding what the buyer requires. Most nuclear buyers will request a Quality Assurance Plan (QAP) or Quality Assurance Program Manual that demonstrates the supplier's program meets NQA-1 or the relevant standard. The buyer's QA team will review this document and may conduct an on-site survey before approving the supplier for the QSL.
Maintaining qualification requires ongoing program discipline. Buyers monitor supplier performance, delivery quality, NCR rates, responsiveness to nonconformances, and whether the supplier self-identifies and reports issues versus having them found by the buyer. Suppliers with poor NCR management or a pattern of late deliveries are candidates for increased surveillance or removal from the QSL.
For Canadian suppliers, registration under CSA N299 (Quality Assurance for Nuclear Power Plants) is a widely recognised qualification path. N299 registration is administered by third-party certification bodies and is accepted by most Canadian nuclear utilities as evidence of QA program adequacy, significantly streamlining the qualification process compared to individual buyer surveys.
The supply chain visibility problem
Large nuclear programs can have hundreds of active suppliers on their QSL, each at a different stage of qualification, with different expiry dates, different surveillance schedules, and different open NCRs and corrective actions. Managing this across spreadsheets and email threads is a known risk: qualification lapses are not caught until procurement is attempted, surveillance visits are scheduled based on memory rather than data, and NCR patterns across the supply base are invisible until they escalate.
The organisations best positioned for both compliance and schedule performance are those where supplier qualification status, upcoming re-evaluations, open NCRs, and surveillance history are visible in one place, and where the system alerts the QA team to issues before they become procurement blockers.
Forged Operations manages the full supplier qualification lifecycle, initial qualification, QSL maintenance, re-evaluation scheduling, surveillance tracking, and NCR linkage. The platform surfaces lapsing qualifications and supplier performance patterns before they affect procurement.
References
- American Society of Mechanical Engineers. ASME NQA-1-2022: Quality Assurance Requirements for Nuclear Facility Applications, Requirement 7 — Control of Purchased Items and Services. New York: ASME, 2022.
- U.S. Nuclear Regulatory Commission. "Criterion VII — Control of Purchased Material, Equipment, and Services." Code of Federal Regulations, 10 CFR 50 Appendix B. Washington, D.C.: NRC.
- U.S. Nuclear Regulatory Commission. Regulatory Guide 1.123: Quality Assurance Requirements for Control of Procurement of Items and Services for Nuclear Power Plants, Revision 2. Washington, D.C.: NRC, 2011.
- CSA Group. CSA N299 series: Quality Assurance Program Requirements for the Supply of Items and Services for Nuclear Power Plants. Toronto, Ontario: CSA Group.
- Electric Power Research Institute. TR-102260: Guideline for the Utilization of Commercial Grade Items in Nuclear Safety-Related Applications. Palo Alto, CA: EPRI.