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1、NFPA®253StandardMethodofTestforCriticalRadiantFluxofFloorCoveringSystemsUsingaRadiantHeatEnergySource2015EditionNFPA®,1BatterymarchPark,Quincy,MA02169-7471,USAAnInternationalCodesandStandardsOrganizationIMPORTANTNOTICESANDDISCLAIMERSCONCERNINGNFPA®STANDARDSNOT
2、ICEANDDISCLAIMEROFLIABILITYCONCERNINGTHEUSEOFNFPASTANDARDSNFPA®codes,standards,recommendedpractices,andguides(“NFPAStandards”),ofwhichthedocumentcontainedhereinisone,aredevelopedthroughaconsensusstandardsdevelopmentprocessapprovedbytheAmericanNationalStandards
3、Institute.Thisprocessbringstogethervolunteersrepresentingvariedviewpointsandintereststoachieveconsensusonfireandothersafetyissues.WhiletheNFPAadministerstheprocessandestablishesrulestopromotefairnessinthedevelopmentofconsensus,itdoesnotindependentlytest,evalua
4、te,orverifytheaccuracyofanyinformationorthesoundnessofanyjudgmentscontainedinNFPAStandards.TheNFPAdisclaimsliabilityforanypersonalinjury,propertyorotherdamagesofanynaturewhatsoever,whetherspecial,indirect,consequentialorcompensatory,directlyorindirectlyresulti
5、ngfromthepublication,useof,orrelianceonNFPAStandards.TheNFPAalsomakesnoguarantyorwarrantyastotheaccuracyorcompletenessofanyinformationpublishedherein.InissuingandmakingNFPAStandardsavailable,theNFPAisnotundertakingtorenderprofessionalorotherservicesfororonbeha
6、lfofanypersonorentity.NoristheNFPAundertakingtoperformanydutyowedbyanypersonorentitytosomeoneelse.Anyoneusingthisdocumentshouldrelyonhisorherownindependentjudgmentor,asappropriate,seektheadviceofacompetentprofessionalindeterminingtheexerciseofreasonablecareina
7、nygivencircumstances.TheNFPAhasnopower,nordoesitundertake,topoliceorenforcecompliancewiththecontentsofNFPAStandards.NordoestheNFPAlist,certify,test,orinspectproducts,designs,orinstallationsforcompliancewiththisdocument.Anycertificationorotherstatementofcomplia
8、ncewiththerequirementsofthisdocumentshallnotbeattributabletotheNFPAandissolelytheresponsibilityofthecertifierormakerofthestatement.REMINDER:UPDATINGOFNFPASTANDARDSUsersofNFPAcodes,