MIL-STD-810G

NOTMEASUREMENTSENSITIVEMIL-STD-810G31October2008SUPERSEDINGMIL-STD-810F1January2000DEPARTMENTOFDEFENSETESTMETHODSTANDARDENVIRONMENTALENGINEERINGCONSIDERATIONSANDLABORATORYTESTSAMSCN/AAREAENVRDISTRIBUTIONSTATEMENTA.Approvedforpublicrelease;distributionisunlimited.MIL-STD-810GPARTONEFOREWORD1.ThisstandardisapprovedforusebyallDepartmentsandAgenciesoftheDepartmentofDefense(DoD).AlthoughpreparedspecificallyforDoDapplications,thisstandardmaybetailoredforcommercialapplicationsaswell.WhileMIL-STD-810FincorporatedasignificantrevisionofMIL-STD-810E,MIL-STD-810Gnotonlyconsolidatesthebasic-810Fwithitsthreechangenoticestoresultinonecomprehensivedocument,butalsoincludesanumberofcorrections,significantchanges,andadditionstothecomprehensive-810F,toincludefivenewtestmethods,oneofwhich(Method526)wasextractedfromMethod516.Theprimaryemphasesarestillthesame–(withtheexceptionofMethod528)tailoringamaterielitem'senvironmentaldesignandtestlimitstotheconditionsthatthespecificmaterielwillexperiencethroughoutitsservicelife,andestablishinglaboratorytestmethodsthatreplicatetheeffectsofenvironmentsonmateriel,ratherthantryingtoreproducetheenvironmentsthemselves.However,theGrevisioncontinuestheup-frontexplanationofhowtoimplementtheenvironmentaltailoringprocessthroughoutthematerielacquisitioncycle.AsinMIL-STD-810F,thisrevisionrecognizesthattheenvironmentaldesignandtesttailoringprocesshasexpandedtoinvolveawiderangeofmanagerialandtechnicalinterests.Accordingly,thisrevisionorientsenvironmentaldesignandtestdirectiontowardthreebasictypesofuserswhohavedistinctlydifferent,althoughcloselyassociated,interests:programmanagerswho,amongotherresponsibilities,ensureproposedconceptsandsystemsarevalidandfunctionalinintendedoperationalenvironments;environmentalengineeringspecialists(EES),whoentertheacquisitionprocessearlytoassistcombatandmaterieldevelopertailoringeffortsbypreparinglifecycleenvironmentalprofilesanddraftingtailoreddesigncriteriaandtestprograms;andthedesign,test,andevaluationcommunity,whoseanalysts,engineers,andfacilityoperatorsusetailoreddesignsandteststomeetuserneeds.2.PartOnedescribesmanagement,engineering,andtechnicalrolesintheenvironmentaldesignandtesttailoringprocess.Itfocusesontheprocessoftailoringmaterieldesignandtestcriteriatothespecificenvironmentalconditionsamaterielitemislikelytoencounterduringitsservicelife.NewappendicessupportthesuccinctlypresentedtextofPartOne.AnnexAcontainscompletedescriptionsofenvironmentalengineeringtasks.Thesetasks,alongwithmanagementinformationinAnnexBandEESguidanceinAnnexC,willhelptoensuretheenvironmentaldesignandtesttailoringprocessisimplementedanddocumentedaccordingtothedisciplined,butflexibleapproachtomaterielacquisitioncalledforinDepartmentofDefense(DoD)5000-seriesdocuments(DoDD5000.1).TermsusedinthisstandardrelatingtothematerielacquisitionprocessarelimitedtotermsusedintheDoD5000-seriesdocuments;toavoidconfusionandpromotesimplicity,service-specificterms/processesarenotused.3.PartTwocontainsenvironmentallaboratorytestmethodstobeappliedaccordingtothegeneralandspecifictesttailoringguidelinesdescribedinPartOne.Itisimportanttoemphasizethat,withtheexceptionofMethod528,thesemethodsarenottobecalledoutinblanketfashion,norappliedasunalterableroutines,butaretobeselectedandtailoredtogeneratethemostrelevanttestdatapossible.TosupportthetailoringprocessdescribedinPartOne,eachtestmethodinPartTwocontainssomeenvironmentaldataandreferences,andidentifiestailoringopportunitiesfortheparticularmethod.Somemethodsaffordawidelatitudefortailoring;somecanbetailoreduptoestablishedlimits,andsomehaverelativelyfewtailoringoptions.Wheneverpossible,eachmethodcontainsbackgroundrationaletohelpdeterminetheappropriateleveloftailoring.Eachtestmethodsupportsthetestengineerandtestfacilityoperatorbydescribingpreferredlaboratorytestfacilitiesandmethodologies.Anyspecifictailoringinformationandvaluescontainedinthesetestmethodsshouldbesupplantedbymoreup-to-datefield/fleetorprogram-specificinformationwhenavailable.Whenappliedproperly,theenvironmentalmanagementandengineeringprocessesdescribedinthisstandardcanbeofenormousvalueingeneratingconfidenceintheenvironmentalworthinessandoveralldurabilityofmaterielsystemdesign.However,itisimportanttorecognizethattherearelimitationsinherentinlaboratorytestingthatmakeitimperativetousepropercautionandengineeringjudgmentwhenextrapolatingtheselaboratoryresultstoresultsthatmaybeobtainedunderactualserviceconditions.Inmanycases,real-worldenvironmentalstresses(singularlyorincombination)cannotbeduplicatedpracticallyorreliablyintestlaboratories.Therefore,usersshouldnotassumethatasystemorcomponentthatpasseslaboratorytestsofthisstandardalsowouldpassfield/fleetverificationtrials.DoD5000-seriesdocumentscallforcomponenttechnologytobedemonstratedinPARTONE-iiMIL-STD-810GPARTONErelevantenvironmentstoreduceriskoncomponentsandsubsystemsthathavebeendemonstratedonlyinlaboratoryenvironments(DoDI5000.2).4.PartThreecontainsacompendiumofclimaticdataandguidanceassembledfromseveralsourcestoincludeAR70-38,“Research,Development,TestandEvalu