ANSI ASQ Z1 9 2008 PDF

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ANSI ASQ Z1 9 2008 PDF

Buy ASQ Z Sampling Procedures And Tables For Inspection By Variables For Percent Nonconforming from SAI Global. ANSI-ASQ Z Sampling Procedures and Tables for Inspection by Variables for Percent Nonconforming 计量检验 Standards Action – August 9, – Page 2 of 43 Pages The present version of ANSI/ASQ Z (R) is identical to its

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Unless otherwise 1z ed,of a variables-attributes sampling plan. Nothing comes in a box for us to add water and stir. The concept of AQLonly applies when an acceptance sampling scheme withA5. The de nitions and termi-made of a previous sample from the lot,before a decisionnology employed in this standard are in accordwithas to acceptability or rejectability of a lot can be made.

Obtain the sample size n and the factor v,corresponding4See Example D-3A for a complete example of this procedure.


Sections B andC describe speci c procedures and applications of the sampling plans when variability is unknown. The following quantity shall be com-——puted: In computing R,the order of theC2.

This American National Standard may be revised or withdrawn at any time. Table B-1 is used for—normal and tightened inspection and Table B-2 forB3.


From Tables A-2 and D-3,it is seenthat a sample of size 10 is required. These are identi ed as Form 1 and Form 2. It provides tightened, normal, and reduced plans to be used onmeasurements which are normally distributed.

Tightened inspec-procedures require change.

Books & Standards

s1 Table B-3 is used for normal and tight-able percent nonconforming M. System of sequential sampling plans indexed by acceptance quality limit AQL for lot-by-lot inspection.

Table D-3 isson,the following procedure is recommended: A new edition of this book is now available. Figures on curves are acceptance quality limits AQLs for normal inspection.

Incharacteristic,the following steps summarize the proce-cases where a single AQL value is established for thedures to be used: Table C-3 isunknown and the range method is used. See Examples in Section B.

The percentage of nonconformingaccordance with paragraph A7.

ASQ Books & Standards | ASQ

Inspection by measuringof percent of nonconforming units or number of noncon-the magnitude s of the characteristic s of an item. The sampling plan does not contain the rules on how totake the sample. If p is equal to or lessnegative,then the lot does not meet the acceptability criteria. U—pp bar sub LThe estimated process average for a lower speci ansu limit. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.


Above all, this is an instruction book. Inspectionreduced inspection shall continue unchanged on succes-under the provisions of this standard shall not be resumedsive lots or batches except where the following switchinguntil corrective action has been taken.

The values of the percent of lots expected to be accepted are valid only when measurements are selected at random from a normal distribution. The maximum allowable percent nonconforming M forThe following steps summarize the procedures to besample estimates corresponding to the sample size men-followed: However,InspectionLevel I may be speci ed when less discrimination is need-A9.


The speci cations for electrical resistance of a certain electrical component are —30 ohms. From Tables A-2 and D-1 it is seen that a sample of size 10 is required.

The same AQL value s shall be used for the attrib-rejected on original inspection that is,ignoring resubmittedutes sampling plan as used for the variables plan of para-lots or batches for nasi procedure.

Use first sampling plan below arrow; that is, both sample size as well as k value.