ASTM_E_2234_-_09_2013.pdf

Designation:E223409(Reapproved 2013)An American National StandardStandard Practice forSampling a Stream of Product by Attributes Indexed byAQL1This standard is issued under the fixed designation E2234;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice establishes lot or batch sampling plans andprocedures for inspection by attributes using MIL-STD-105Eas a basis for sampling a steady stream of lots indexed byAQL.1.2 This practice provides the sampling plans of MIL-STD-105E in ASTM format for use by ASTM committees andothers.It recognizes the continuing usage of MIL-STD-105Ein industries supported by ASTM.Most of the original text inMIL-STD-105E is preserved in Sections 4 6 of this practice.1.3 No system of units is specified in this standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E456 Terminology Relating to Quality and StatisticsE1994 Practice for Use of Process Oriented AOQL andLTPD Sampling PlansE2586 Practice for Calculating and Using Basic Statistics2.2 Other Standard:MIL-STD-105E Sampling Procedures and Tables for In-spection by Attributes33.Terminology3.1 Definitions:3.1.1 For a more extensive list of terms in E11 standards,see Terminology E456.3.1.2 acceptance quality limit(AQL),nquality limit that isthe worst tolerable process average when a continuing series oflots is submitted for acceptance sampling.3.1.2.1 DiscussionThis definition supersedes that given inMIL-STD-105E.3.1.3 average outgoing quality(AOQ),nthe average per-cent defective of outgoing product including all accepted lotsor batches after any defectives found in them are replaced byacceptable units,plus all lots or batches which are not acceptedafter such lots or batches have been effectively 100%inspected and all defective units replaced by acceptable units.E19943.1.4 average outgoing quality limit(AOQL),ntheAOQLis the maximum of the AOQs for all possible incomingpercentages defective for the process for a given acceptancesampling plan.E19943.1.5 classification of defects,nthe enumeration of pos-sible defects of the unit of product classified according to theirseriousness,that is,critical,major,or minor defect.3.1.6 critical defect,na defect that judgment and experi-ence indicate would result in hazardous or unsafe conditionsfor individuals using,maintaining,or depending upon theproduct,or a defect that judgment and experience indicate islikely to prevent performance of the function of a major enditem.3.1.7 defect,nany nonconformance of the unit of productwith specified requirements.3.1.8 double sampling plan,na multiple sampling plan inwhich up to two samplings can be taken and evaluated toaccept or reject a lot.3.1.9 inspection,nthe process of measuring,examining,testing,or otherwise comparing the unit of product with therequirements.3.1.10 inspection by attributes,ninspection whereby ei-ther the unit of product is classified simply as defective ornon-defective,or the number of defects in the unit of productis counted,with respect to a given requirement or set ofrequirements.3.1.11 inspection lot,na collection of units of productproduced under conditions that are considered uniform andfrom which a sample is drawn and inspected.1This practice is under the jurisdiction ofASTM Committee E11 on Quality andStatistics and is the direct responsibility of Subcommittee E11.30 on StatisticalQuality Control.Current edition approved April 1,2013.Published April 2013.Originallyapproved in 2005.Last previous edition approved in 2009 as E2234 09.DOI:10.1520/E2234-09R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.12 major defect,na defect,other than critical,that islikely to result in failure,or to reduce materially the usabilityof the unit of product for its intended purpose.3.1.13 minor defect,na defect that is not likely to reducematerially the usability of the unit of product for its intendedpurpose,or is a departure from established standards havinglittle bearing on the effective use or operation of the unit.3.1.14 multiple sampling plan,na sampling plan in whichsuccessive samples from