NFPA8501StandardforSingleBurnerBoilerOperation1997EditionNationalFireProtectionAssociation,1BatterymarchPark,POBox9101,Quincy,MA02269-9101AnInternationalCodesandStandardsOrganizationTheStandardisdownloadedfromNationalFireProtectionAssociation,Inc.OneBatterymarchParkQuincy,Massachusetts02269IMPORTANTNOTICEABOUTTHISDOCUMENTNFPAcodes,standards,recommendedpractices,andguides,ofwhichthedocumentcontainedhereinisone,aredevelopedthroughaconsensusstandardsdevelopmentprocessapprovedbytheAmericanNationalStandardsInstitute.Thisprocessbringstogethervolunteersrepresentingvariedviewpointsandintereststoachieveconsensusonfireandothersafetyissues.WhiletheNFPAadministerstheprocessandestablishesrulestopromotefairnessinthedevelopmentofconsensus,itdoesnotindependentlytest,evaluate,orverifytheaccuracyofanyinformationorthesoundnessofanyjudgmentscontainedinitscodesandstandards.TheNFPAdisclaimsliabilityforanypersonalinjury,propertyorotherdamagesofanynaturewhatsoever,whetherspecial,indirect,consequentialorcompensatory,directlyorindirectlyresultingfromthepublication,useof,orrelianceonthisdocument.TheNFPAalsomakesnoguarantyorwarrantyastotheaccuracyorcompletenessofanyinformationpublishedherein.Inissuingandmakingthisdocumentavailable,theNFPAisnotundertakingtorenderprofessionalorotherservicesfororonbehalfofanypersonorentity.NoristheNFPAundertakingtoperformanydutyowedbyanypersonorentitytosomeoneelse.Anyoneusingthisdocumentshouldrelyonhisorherownindependentjudgmentor,asappropriate,seektheadviceofacompetentprofessionalindeterminingtheexerciseofreasonablecareinanygivencircumstances.TheNFPAhasnopower,nordoesitundertake,topoliceorenforcecompliancewiththecontentsofthisdocument.NordoestheNFPAlist,certify,testorinspectproducts,designs,orinstallationsforcompliancewiththisdocument.AnycertificationorotherstatementofcompliancewiththerequirementsofthisdocumentshallnotbeattributabletotheNFPAandissolelytheresponsibilityofthecertifierormakerofthestatement.NOTICESAllquestionsorothercommunicationsrelatingtothisdocumentandallrequestsforinformationonNFPAproceduresgoverningitscodesandstandardsdevelopmentprocess,includinginformationontheproceduresforrequestingFormalInterpretations,forproposingTentativeInterimAmendments,andforproposingrevisionstoNFPAdocumentsduringregularrevisioncycles,shouldbesenttoNFPAheadquarters,addressedtotheattentionoftheSecretary,StandardsCouncil,NationalFireProtectionAssociation,1BatterymarchPark,P.O.Box9101,Quincy,MA02269-9101.UsersofthisdocumentshouldbeawarethatthisdocumentmaybeamendedfromtimetotimethroughtheissuanceofTentativeInterimAmendments,andthatanofficialNFPAdocumentatanypointintimeconsistsofthecurrenteditionofthedocumenttogetherwithanyTentativeInterimAmendmentsthenineffect.InordertodeterminewhetherthisdocumentisthecurrenteditionandwhetherithasbeenamendedthroughtheissuanceofTentativeInterimAmendments,consultappropriateNFPApublicationssuchastheNationalFireCodesSubscriptionService,visittheNFPAwebsiteat(NFPA).Bymakingthisdocumentavailableforuseandadoptionbypublicauthoritiesandothers,theNFPAdoesnotwaiveanyrightsincopyrighttothisdocument.1.AdoptionbyReference—Publicauthoritiesandothersareurgedtoreferencethisdocumentinlaws,ordinances,regulations,administrativeorders,orsimilarinstruments.Anydeletions,additions,andchangesdesiredbytheadoptingauthoritymustbenotedseparately.ThoseusingthismethodarerequestedtonotifytheNFPA(Attention:Secretary,StandardsCouncil)inwritingofsuchuse.Thetermadoptionbyreferencemeansthecitingoftitleandpublishinginformationonly.2.AdoptionbyTranscription—A.Publicauthoritieswithlawmakingorrule-makingpowersonly,uponwrittennoticetotheNFPA(Attention:Secretary,StandardsCouncil),willbegrantedaroyalty-freelicensetoprintandrepublishthisdocumentinwholeorinpart,withchangesandadditions,ifany,notedseparately,inlaws,ordinances,regulations,administrativeorders,orsimilarinstrumentshavingtheforceoflaw,providedthat:(1)duenoticeofNFPA'scopyrightiscon