UL 1746-2007 钢制地下储罐外表面防腐蚀系统

ULCOPYRIGHTEDMATERIAL–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULUL1746ISBN0-7629-1258-8ExternalCorrosionProtectionSystemsforSteelUndergroundStorageTanks–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMUL–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULUnderwritersLaboratoriesInc.(UL)333PfingstenRoadNorthbrook,IL60062-2096ULStandardforSafetyforExternalCorrosionProtectionSystemsforSteelUndergroundStorageTanks,UL1746ThirdEdition,DatedJanuary17,2007SUMMARYOFTOPICSThisneweditionofUL1746isbeingissuedto:1)Addpolyurethane,polyureatotheconstructionmaterialslistforjacketedsystems.2)AddincreasedinternalfluidexposuretimesfortheResistancetoExternalandInternalFluidsTestforjacketedtypetanksconstructedofpolyurethaneandpolyureamaterials.3)RevisetheconstructionrequirementstoclarifythecurrentrequirementsandeliminatepotentialinconsistenciesbetweenUL58andUL1746bydeletingduplicaterequirements.4)Includerequirementsforheatingcoilsandhotwells.5)AddanIndentationTesttothePartIV–CoatedTankrequirements.6)RevisethetestpotentialfortheHolidayTests.7)ClarifythetestacceptancecriteriafortheTankExaminationandHolidayTestsforjacketedtypetanks.8)RevisetheManufacturingandProductionLeakageTest.9)Replacetheterm“clad”withtheterm“coated”.10)ClarifythetestmethodsthatusethesolutionslistedinTables21.1,25.1,and28.3byrevisingthetitle.11)Deletetheterm“base”fromtheterm“basetank”.12)ForcompositeandcoatedtypetanksrevisethePermeance/CladdingDissolutionTesttitletoPermeation/CoatingDissolutionTestandcorrectthereferencestothesetests.13)ForthepermeationdissolutiontestingforjacketedtypetanksprovideconsistentreferencestothePermeation/JacketDissolutionTest.14)Revisetheterminologyinthestandardtoindicateasteeltankprotectedbycathodesisacathodicallyprotectedtank.15)AddthenumberoflocationsthatthethicknessofacompositematerialistobemeasuredduringthePermeation/CoatingDissolutionTestforcompositetypetanks.16)Updatethestandardreferencesduetothewithdrawalandreplacementofstandards.JANUARY17,2007−UL1746tr1–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMUL17)Deletetheeditioninformationfromsomedocumentreferences.18)Editorialrevisions.Thefollowingtableliststhefutureeffectivedateswiththecorrespondingitem.FutureEffectiveDateReferencesJanuary17,2009Sections4,5,6,7,8,9,10;Paragraphs11.1.1,16.2.1,16.2.3,16.3.4,16.6.2,16.7.1,17.1.1,17.6.2,18.6.1,20.3.1,20.5.2,22.7.2,22.8.1,24.2.3,24.2.4,24.4.2,26.7.1,26.10.1,28.2.1,28.9.2,28.13.1,28.13.2,28.13.3,29.7.2,32.1;Tables20.2,22.1,24.3,28.2,29.1Thenewand/orrevisedrequirementsaresubstantiallyinaccordancewithUL’sProposal(s)onthissubjectdatedDecember17,2005andSeptember22,2006.Thebulletin(s)isnowobsoleteandmaybediscarded.Asindicatedonthetitlepage(page1),thisULStandardforSafetyisanAmericanNationalStandard.AttentionisdirectedtothenoteonthetitlepageofthisStandardoutliningtheprocedurestobefollowedtoretaintheapprovedtextofthisANSI/ULStandard.TheULForewordisnolongerlocatedwithintheULStandard.ForinformationconcerningtheuseandapplicationoftherequirementscontainedinthisStandard,thecurrentversionoftheULForewordislocatedonULStandardsInfoNetat:’sNorthbrookOfficeistheofficialdocumentinsofarasitrelatestoaULserviceandthecomplianceofaproductwithrespecttotherequirementsforthatproductandservice,oriftherearequestionsregardingtheaccuracyofthisStandard.UL’sStandardsforSafetyarecopyrightedbyUL.NeitheraprintedcopyofaStandard,northedistributiondisketteforaStandard-on-DisketteandthefilefortheStandardonthedistributiondisketteshouldbealteredinanyway.AllofUL’sStandardsandallcopyrights,ownerships,andrightsregardingthoseStandardsshallremainthesoleandexclusivepropertyofUL.Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformbyanymeans,electronic,mechanicalphotocopying,recording,orotherwisewithoutpriorpermissionofUL.RevisionsofULStandardsforSafetyareissuedfromtimetotime.AULStandardforSafetyiscurrentonlyifitincorporatesthemostrecentlyadoptedrevisions.ULprovidesthisStandard″asis″withoutwarrantyofanykind,eitherexpressedorimplied,includingbutnotlimitedto,theimpliedwarrantiesofmerchantabilityorfitnessforanypurpose.InnoeventwillULbeliableforanyspecial,incidental,consequential,indirectorsimilardamages,includinglossofprofits,lostsavings,lossofdata,oranyotherdamagesarisingoutoftheuseofortheinabilitytousethisStandard,evenifULoranauthorizedULrepresentativehasbeenadvisedofthepossibilityofsuchdamage.InnoeventshallUL’sliabilityforanydamageeverexceedthepricepaidforthisStandard,regardlessoftheformoftheclaim.JANUARY17,2007−UL1746tr2–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULULwillattempttoanswersupportrequestsconcerningelectronicversionsofitsStandards.However,thissupportserviceisofferedonareasonableeffortsbasisonly,and