UL 448 2007 消防服务用离心固定泵Centrifugal Stationary Pumps

ULCOPYRIGHTEDMATERIAL–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULUL448CentrifugalStationaryPumpsforFire-ProtectionService–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMUL–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULUnderwritersLaboratoriesInc.(UL)333PfingstenRoadNorthbrook,IL60062-2096ULStandardforSafetyforCentrifugalStationaryPumpsforFire-ProtectionService,UL448TenthEdition,DatedJune8,2007SUMMARYOFTOPICSThisNewEditionofANSI/UL448includesthefollowingchanges:ChangescopesectiontoreferencecentrifugalpumpsforfireprotectionserviceClarificationofwhichdevicesarerequiredtobesuppliedwitheachpump.Revise7.2toindicatethatprovisionsforfeetorafabricatedsupport(base)aretobeprovidedbythepumpmanufacturer.Clarificationofcriteriarelatedtotheconstructionofthedischargeheadforaverticalturbinepump.Clarificationofwhichmetalsareacceptedasbeingcorrosionresistantwithoutfurthertesting.Clarificationthatthetermmaximumworkingpressuredenotesthemaximumpressuredevelopedatthedischargeflangeofthepump.Clarificationofrequirementsforstrainers,operationtest,endurancetest,andpumpmarking.ReferenceISO1940-1inlieuofANSIS2.19andmaintainthecurrentG6.3balancecriteriagrade.ChangetitleofstandardtoCentrifugalStationaryPumpsforFireProtectionServiceTherequirementsaresubstantiallyinaccordancewithUL’sProposal(s)onthissubjectdatedDecember22,2006andMarch9,2007.Asindicatedonthetitlepage(page1),thisULStandardforSafetyisanAmericanNationalStandard.AttentionisdirectedtothenoteonthetitlepageofthisStandardoutliningtheprocedurestobefollowedtoretaintheapprovedtextofthisANSI/ULStandard.TheULForewordisnolongerlocatedwithintheULStandard.ForinformationconcerningtheuseandapplicationoftherequirementscontainedinthisStandard,thecurrentversionoftheULForewordislocatedonULStandardsInfoNetat:’sNorthbrookOfficeistheofficialdocumentinsofarasitrelatestoaULserviceandthecomplianceofaproductwithrespecttotherequirementsforthatproductandservice,oriftherearequestionsregardingtheaccuracyofthisStandard.JUNE8,2007−UL448tr1–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULUL’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.ULwillattempttoanswersupportrequestsconcerningelectronicversionsofitsStandards.However,thissupportserviceisofferedonareasonableeffortsbasisonly,andULmaynotbeabletoresolveeverysupportrequest.ULsupportstheelectronicversionsofitsStandardsonlyiftheyareusedundertheconditionsandoperatingsystemsforwhichitisintended.UL’ssupportpoliciesmaychangefromtime-to-timewithoutnotification.ULreservestherighttochangetheformat,presentation,filetypesandformats,deliverymethodsandformats,andthelikeofbothitsprintedandelectronicStandardswithoutpriornotice.PurchasersoftheelectronicversionsofUL’sStandardsforSafetyagreetodefend,indemnify,andholdULharmlessfromandagainstanyloss,expense,liability,damage,claim,orjudgement(includingreasonableattorney’sfees)resultingfromanyerrorordeviationintroducedwhilepurchaserisstoringanelectronicStandardonthepurchaser’scomputersystem.Ifasingle-userversionelectronicStandardwaspurchased,onecopyofthisStandardmaybestoredontheharddiskofasinglepersonalcomputer,oronasingleLANfile-serverorthepermanentstoragedeviceofamultiple-usercomputerinsuchamannerthatthisStandardmayonlybeaccessedbyoneuseratatimeandforwhichthereisnopossibilityofmultipleconcurrentaccess.Ifamultiple-userversionelectronicStandardwaspurchased,onecopyoftheStandardmaybestoredonasingleLANfile-server,oronthepermanentstoragedeviceofamultiple-usercomputer,oronanIntranetserver.Thenumberofconcurrentusersshallnotexceedthenumberofusersauthorized.ElectronicStandardsareintendedforon-lineuse,suchasforviewingtherequirementsofaStandard,conduc