Therefore, we are seeking guidance on a practical way to implement a in-process inspection during production that follows the ANSI Z1.4 standard. Product is made as orders are received, and not typically stored as inventory, so our on-time delivery demands also hinder our ability to hold product for final inspections of completed production lots. Another limitation is a lack of space to stage product while waiting for the final inspection of the completed production lots. Lots can be large and run for many days and waiting until lot completion to determine the sample size, based on the finished lot size, is too late because we will have missed our chance to correct any production issues that may result in defective parts. Our customers require that we follow the ANSI Z1.4 standard for attribute sampling plans however, it is not feasible to wait until lots are completed to perform inspections.
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