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Quality Control procedures often result in longer manufacturing lead times.
I have worked with several organisations who struggled with long lead times and missed customer commitments. When we analysed the major causes of delay, Quality Control clearance appeared quite often as a significant factor.
It’s a common practice for finished goods to be cleared by QC before shipping to customers. We also see large queues of finished product batches waiting to be cleared. If these are cleared in a sequential order, some urgent consignments do get delayed beyond their due dates.
The first level of improvement involves prioritising the queue based on due dates. This simple rule improves due date performance substantially.
The second and more potent level of improvement involves doing away with QC itself. It sounds radical, but can be achieved by moving from Quality Control to Quality Assurance. If we control the process parameters and build quality at source, we can do away with QC.
Two simple techniques, leading to massive improvements in OTIF performance, especially for B2B companies.