【英文标准名称】:StandardGuideforSelectionofTechniquesforElectricalDetectionofPotentialLeakPathsinGeomembrane
【原文标准名称】:电子探测地膜中潜在漏气路径的技术选择的标准指南
【标准号】:ASTMD6747-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D35.10
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:地膜;潜在;泄漏;电的;检测;选择
【英文主题词】:electricalleaklocationsystem;geomembrane;leaksdetection
【摘要】:Typesofpotentialleakpathshavebeenrelatedtothequalityofthesub-gradematerial,qualityofthecovermaterial,careinthecovermaterialinstallationandqualityofgeomembraneinstallation.Experiencedemonstratesthatgeomembranescanhaveleakscausedduringtheirinstallationandplacementofmaterial(s)ontheliner.Thedamagetoageomembranecanbedetectedusingelectricalleaklocationsystems.Suchsystemshavebeenusedsuccessfullytolocateleakpathsinelectrically-insulatinggeomembranessuchaspolyethylene,polypropylene,polyvinylchloride,chlorosulfonatedpolyethyleneandbituminousgeomembranesinstalledinbasins,ponds,tanks,oreandwastepads,andlandfillcells.Theprinciplebehindthesetechniquesistoplaceavoltageacrossasyntheticgeomembranelinerandthenlocateareaswhereelectricalcurrentflowsthroughdiscontinuitiesintheliner(asshownschematicallyinFig.1).Insulationmustbesecuredpriortoasurveytopreventpipepenetrations,flangebolts,steeldrains,andbattenstripsonconcretetoconductelectricitythroughthelinerandmaskpotentialleakpaths.Thelinermustactasaninsulatoracrosswhichanelectricalpotentialisapplied.Thiselectricdetectionmethodoflocatingpotentialleakpathsinageomembranecanbeperformedonexposedliners,onlinerscoveredwithwater,oronlinerscoveredbyaprotectivesoillayer,orboth.FIG.1SchematicofElectricalLeakDetectionMethod1.1Thisstandardguideisintendedtoassistindividualsorgroupsinassessingdifferentoptionsavailableforlocatingpotentialleakpathsininstalledgeomembranesthroughtheuseofelectricalmethods.Forclarity,thisdocumentusesthetermpotentialleakpathtomeanholes,punctures,tears,knifecuts,seamdefects,cracksandsimilarbreachesoverthepartialorentireareaofaninstalledgeomembrane.1.2Thisguidedoesnotcoversystemsthatarerestrictedtoseamtestingonly,nordoesitcoversystemsthatmaydetectleaksnon-electrically.Itdoesnotcoversystemsthatonlydetectthepresence,butnotthelocationofleaks.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatoryrequirementspriortouse.
【中国标准分类号】:N50
【国际标准分类号】:59_080_70
【页数】:9P.;A4
【正文语种】: