Designation:D6157−97(Reapproved2017)´1StandardPracticeforDeterminingthePerformanceofOil/WaterSeparatorsSubjectedtoaSuddenRelease1ThisstandardisissuedunderthefixeddesignationD6157;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—TheKeywordsSectionwasaddededitoriallyinDecember2017.1.Scope1.1Thispracticedescribesthetestingprocedure,anynec-essaryrelatedapparatus,andthesamplingtechniquetobeusedindeterminingtheperformancecharacteristicsofanoil/waterseparatorsubjectedtothesuddenreleaseofarelativelylargequantityofhydrocarbonsthatmayappearinitsinfluentinpureformorathighconcentration.1.2Thispracticedoesnotaddressthedeterminationoftheperformancecharacteristicsofanoil/waterseparatorsubjectedtosurfacerun-offresultingfromrainwaterdrainingfromimprovedorunimprovedland.Inthiscase,refertoPracticeD6104.1.3Thispracticedoesnotaddressthedeterminationoftheperformancecharacteristicsofanoil/waterseparatorsubjectedtoamechanicallyemulsifiedinfluentsuchasprovidedbyapump.1.4Thispracticedoesnotinvestigatetheabilityoftheseparatortohandledebrisorsuspendedsolids,thatis,gritortreeleaves.1.5Whiletheeffluentmaymeetcoderequirementsfortotaloilandgreasecontent,thispracticedoesnotaddressthepresenceofsolubleorganics,thatis,benzene,toluene,ethyl-benzene,andxylene(BTEXs)thatmaybedetectedintheeffluent.Italsodoesnotmakeanyprovisionsfortheeffectsofdetergents,surfactants,soapsoranywatersolublematter(thatis,salts)oranyportionofanessentiallyinsolublematterthatmaybefoundinsolutiononseparation.(Effectsofcertainwatersolublechemicalsorsolidsmaybeinvestigatedbyaddingthemtothewateratpredeterminedconstantconcentra-tions.)1.6Inordertoestimatetheeffectofwatertemperatureontheperformanceoftheseparator,thetestsdescribedinthispracticemustbeperformedattwowatertemperatures.Theselectedtemperaturesmustbeatleast10...
