Switching Between Normal, Reduced, and Tightened Inspection (ANSI/ASQ Z1.9)
Here is a chart of the switching rules between the three types of inspection (and discontinuation of inspection), as given by ANSI/ASQ Z1.9 standard.
To learn about the number of batches that will be inspected under a certain inspection type, until switching to a different inspection type, click on the relevant arrow or rule.
|10 consecutive batches not rejected||5 consecutive batches not rejected|
|Reduced Inspection||Normal Inspection||Tightened Inspection||Discontinue Inspection|
|1 batch not accepted||2 of 5 consecutive batches rejected||5 consecutive batches remain on tightened inspection|