CMQ 200 USING SAMPLE SYSTEMS. - QUALITY - D.A.U. UNIVERSITY

With 1 nonconforming lot under reduced inspection sampling, what switch should occur under MIL-STD-1916 acceptance switching rules?

1. reduced to normal

2. tightened to reduced

3. tightened to normal

4. normal to reduced

CMQ200 Statistical Sampling Lesson 2.4 - MIL-STD-1916 System and Tables RESOURCES PRINT HELP Reduced to Normal When conducting reduced sampling, if any inspection lot is not accepted, the sampling should switch from reduced inspection to normal inspection. REDUCED In addition to a nonconforming lot, the following conditions may also institute normal inspection: Nonconforming * 10 Consecutive Conforming Production irregular or delayed, or Supplier's quality system is unsatisfactory, or Other conditions warrant Normal inspection changes the VL back to the normal level. START NORMAL 5 Consecutive Conforming 2 of 5 Nonconforming For example, using the inspection lot of 5,000 units with a VL of IV. If one defect is found in the inspection sample of 64 units, the lot is rejected and the VL changes from III back to IV. The sample size switches back to 160 from 64. The MIL-STD-1916 normal sample plan is sample size=160, accept=0, and reject=1. DISCONTINUE TIGHTENED Additional Requirements may apply. Page 37 of 53 Back Next