What are the advantage of sqc over mass inspection?
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#1. “Judgement inspection” (prevents shipment of defective batches)
Quantify, and if possible sort out, defects.
Takes place after production is finished.
Prevents defective lots from reaching the customer. But does not decrease the defect rate.
#2. “Informative inspection” (allows for implementation of corrective actions)
Investigate sources of defects.
Feed the information back to the processes.
Implement corrective actions, in order to reduce the defect rate.
#3. “Source inspection” (prevents defects from appearing)
Work on processes to prevent errors from happening, when possible.
Work on processes to make sure errors are caught before they become defects.
Quantify, and if possible sort out, defects.
Takes place after production is finished.
Prevents defective lots from reaching the customer. But does not decrease the defect rate.
#2. “Informative inspection” (allows for implementation of corrective actions)
Investigate sources of defects.
Feed the information back to the processes.
Implement corrective actions, in order to reduce the defect rate.
#3. “Source inspection” (prevents defects from appearing)
Work on processes to prevent errors from happening, when possible.
Work on processes to make sure errors are caught before they become defects.
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