How To Ensure Your Long-Term Suppliers' CONTINUOUS Quality Compliance (Ⅴ) How can we reduce the risks of defective parts being produced and delivered by suppliers through 2nd party audits? (Continued from the last issue) Before the audit, choose a proper timing, select qualified auditors, and then carry out the audit according to the pre-determined audit plan. in the meantime, it is also necessary to state the requirements for the supplier's systematic documentation. ▍Audit timing selection ● When developing new suppliers, we should evaluate the quality management system and the continuous supply capability of the new suppliers. ● When exiting suppliers develop the quality management system, we should evaluate the quality management system and the quality control capability in the manufacturing process. ● When the supplier uses new materials or there are changes in material, location, and process, or has major quality complaints and delivery delays, we should evaluate the quality control capability and product quality management in the manufacturing process. ● For suppliers with stable long-term supply quality, we should evaluate the quality management system, process realization capability, and product quality on a regular basis. ▍Auditor's compliance qualification The selection of auditors is one of the key factors to ensure the continuous quality stability of the supply. Basic requirements for qualified auditors: select auditors with professional knowledge and audit experience according to the process/product characteristics of the suppliers to be audited, to help the supplier identify high risks and reduce them. ▍Audit planning We suggest that the audits be planned with the following aspects: operations of quality management system, continuous supply capacity, process quality control ability, product quality control ability, environmental and occupational health and safety assurance ability, etc. Different audit schemes, objectives, and key audit points should be used depending on the supplier's ability to continuously supply and stabilize the quality. For instance, when there are serious delivery delays with the supplier, we need to plan the audit on the supplier's finance, process, technology, and production capacity, in order to assess the supplier's continuous supply capacity and determine whether the supplier's supply capacity is up to standard, so as to reduce the risk of supply interruption. We need to pay special attention to the evaluation of suppliers' continuous supply capability.
Currently, about 50% - 70% of the factories in the aftermarket cannot guarantee the effective implementation of the control plan requirements. Therefore, when we pay attention to the supplier’s process control capability, we sometimes overlook the many process quality risks, which unfortunately might lead to hidden quality dangers in the final products. ▍Requirements for suppliers' systematic documentation
For qualified suppliers with long-term cooperation, we need suppliers to provide systematic documentation, including quality manual, procedure documents, quality assurance agreement. The contents of change management include personnel, technology, process, materials, production/testing equipment, production site, etc. For safety-related parts, the supplier should timely inform the buyer of the changed management requirements including PPAP and control plan. Change management is the most important method to control the quality risks in the batch supply stage. We should assess the supplier's process quality capability and continuous supply capability based on the timing of the changes by the supplier. |