Meaning
Documented inspection procedures embedded within the standard operating guidelines of a factory define the methods and frequency for verifying production standards. Following a quality audit protocol ensures that the transition from a pilot line to high-rate production is supported by consistent measurement techniques. This document dictates the sampling plan and the response action when a process drifts.
Inspection Standard
Inspectors use calibrated instruments to measure the dimensions and performance of completed assemblies. These measurements are compared directly against the tolerance limits defined in the engineering drawings. Any deviation from these limits leads to immediate rejection of the batch.
Sampling Methodology
The frequency of audits is determined by the production volume and the stability of the process. High-volume runs require more frequent sampling to prevent large batches of defective products from being manufactured. This approach balances the cost of inspection against the risk of shipping bad products.
Corrective Action
When an audit reveals a failure, the protocol demands that the production line be paused immediately. This pause prevents the creation of additional scrap and triggers an engineering review to find the root cause of the issue. Failing to stop the line when a deviation is found leads to massive waste and rework costs.
Corrective actions must be documented before the line is restarted.
