Supplier Operational Audit Checklist

Use this supplier operational audit checklist to evaluate the capabilities, quality management system, and production controls of potential or current suppliers. The template guides auditors through supplier information, certifications, and compliance with ISO 9001, PED, and API Q1. Assess management responsibility, metrics, and quality culture; purchasing controls and material certification; operations including machining, assembly, testing, and outsourced processes; non-destructive testing and corrosion protection; handling of non-conforming product, corrective and preventive actions, customer complaints, warranties, and documentation at receiving, warehousing, and dispatch. It supports factory tours, equipment reviews, and continuous improvement practices such as Lean and Six Sigma to ensure robust supply quality and compliance.