Designation:E2696−09(Reapproved2013)AnAmericanNationalStandardStandardPracticeforLifeandReliabilityTestingBasedontheExponentialDistribution1ThisstandardisissuedunderthefixeddesignationE2696;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticepresentsstandardsamplingproceduresandtablesforlifeandreliabilitytestinginprocurement,supply,andmaintenancequalitycontroloperationsaswellasinresearchanddevelopmentactivities.1.2Thispracticedescribesgeneralproceduresanddefini-tionsoftermsusedinlifetestsamplinganddescribesspecificproceduresandapplicationsofthelifetestsamplingplansfordeterminingconformancetoestablishedreliabilityrequire-ments.1.3ThispracticeisanadaptationoftheQualityControlandReliabilityHandbookH-108,“SamplingProceduresandTablesforLifeandReliabilityTesting(BasedonExponentialDistribution),”U.S.GovernmentPrintingOffice,April29,1960.1.4Asystemofunitsisnotspecifiedinthispractice.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E456TerminologyRelatingtoQualityandStatisticsE2234PracticeforSamplingaStreamofProductbyAttri-butesIndexedbyAQLE2555PracticeforFactorsandProceduresforApplyingtheMIL-STD-105PlansinLifeandReliabilityInspection3.Terminology3.1Definitions:3.1.1SeeTerminologyE456foramoreextensivelistingoftermsinASTMCommitteeE11standards.3.1.2consumer’srisk,β,n—probabilitythatalothavingspecifiedrejectablequalitylevelwillbeacceptedunderadefinedsamplingplan.E25553.1.2.1Discussion—Inthispractice,theconsumer’sriskistheprobabilityofacceptinglotswithmeantimetofailureθ1.3.1.2.2Discussion—Fortheproceduresof9.7and9.8...
