Designation:D7953−14StandardPracticeforElectricalLeakLocationonExposedGeomembranesUsingtheArcTestingMethod1ThisstandardisissuedunderthefixeddesignationD7953;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeisaperformance-basedstandardforanelectricalmethodforlocatingleaksinexposedgeomembranes.Forclarity,thispracticeusestheterm“leak”tomeanholes,punctures,tears,knifecuts,seamdefects,cracks,andsimilarbreachesinaninstalledgeomembrane(asdefinedin3.2.4).1.2Thispracticecanbeusedforgeomembranesinstalledinbasins,ponds,tanks,oreandwastepads,landfillcells,landfillcaps,canals,andothercontainmentfacilities.Itisapplicableforgeomembranesmadeofmaterialssuchaspolyethylene,polypropylene,polyvinylchloride,chlorosulfonatedpolyethylene,bituminousgeomembrane,andanyotherelectri-callyinsulatingmaterials.Thispracticeisbestapplicableforlocatinggeomembraneleakswheretheproperpreparationshavebeenmadeduringtheconstructionofthefacility.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D4439TerminologyforGeosyntheticsD6747GuideforSelectionofTechniquesforElectricalDetectionofLeaksinGeomembranesD7002PracticeforLeakLocationonExposedGeomem-branesUsingtheWaterPuddleSystemD7703PracticeforElectricalLeakLocationonExposedGeomembranesUsingtheWaterLanceSystem3.Terminology3.1Definitions:3.1.1Forgeneraldefinitionsusedinthispractice,refertoTerminologyD4439.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1conductive-backedgeomembrane,n—aspecialtygeomem...
