ANSI/ASQ Z1.9–2003 (R2013): Sampling Procedures and Tables for Inspection by Variables for Percent Nonconforming

 116 Pages    2013
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ANSI/ASQ Z1.9-2003 (R2013) is a very minor revision of ANSI/ASQ Z1.9-2003 (R2008), also referred to as ANSI/ASQ Z1.9-2008.

ANSI/ASQ Z1.9-2003 (R2013) continues to allow complete interchangeability of the tabulated plans with ISO 3951-1, which provided a graphical means for implementation of the plans.

ANSI/ASQ Z1.9-2003 (R2013) is also roughly matched to ANSI/ASQ Z1.4-2003 (R2013), which corresponds directly to the old military standard MIL-STD-105E. The matching is sufficient to allow inspection under either standard for stated AQLs and inspection levels with reasonably equivalent protection. Tables are given in Section E—Appendix that show differences in protection between ANSI/ASQ Z1.9-2003 (R2013) and ANSI/ASQ Z1.4-2003 (R2013). These are for use in critical applications to determine whether moving from one standard to the other is appropriate.


Table B-2 Standard Deviation Method Master Table for Reduced Inspection for Plans Based on Variability Unknown (Single Specification Limit – Form 1)

  • In row N, changed Sample Size from 30 to 50.

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