AQL (Acceptable Quality Level) vs. IRR (Initial Reliability Requirement)

K

kimmi - 2002

#1
#1
AQL vs IRR

Where can I find a source that explains the correlation between AQL (acceptable quality level - like 1.5) and IRR (initial reliability requirement - like 95%) in acceptance sampling? It seems I remember coming across a cross-reference chart at some point some years ago, but I can't remember where. :confused:
 
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A

assuranceman

#3
#3
This one is easy. The Boeing approval guide gives the OC curves and the matched AQL and LTPD.
 
A

avigeva

#4
#4
TMHO there is no correlation between AQL and reliability. QAL predicts the probability of a part to pass QC (conform to spec or DWG) and Reliability prdicts the probability of a system to function properly over a specified time period at specified conditions (Design).

Avi
 
A

assuranceman

#5
#5
"Design Reliability" is not what is being referred to. IRR is a special Boeing sampling plan for Boeing suppliers. The probability of acceptance is different from the 95% of the AQL sampling plans.
 
Atul Khandekar

Atul Khandekar

Quite Involved in Discussions
#6
#6
Could not find the cross-ref chart as mentioned in the first post, but this may be a good reference:
<<Mod: Dead Link Removed.>>

The Boeing document is:
D1-8007 - Approval Guide for Supplier Statistical Sampling Plans
 
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W

wlhh307

#7
#7
could you please send me an copy of this documents? I am learing something about Sampling. Thanks a lot!
 
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