2013ASMEBoilerandPressureVesselCodeANINTERNATIONALCODERecommendedGuidelinesfortheCareofPowerBoilersVII5/15/135:14PM--`,,,,``,,```,``,,`,,`,``,,`,`-`-`,,`,,`,`,,`-----`,,,,``,,```,``,,`,,`,``,,`,`-`-`,,`,,`,`,,`---VIIRECOMMENDEDGUIDELINESFORTHECAREOFPOWERBOILERSASMEBoilerandPressureVesselCommitteeonPowerBoilersANINTERNATIONALCODE2013ASMEBoiler&PressureVesselCode2013EditionJuly1,2013TwoParkAvenue�NewYork,NY�10016USA--`,,,,``,,```,``,,`,,`,``,,`,`-`-`,,`,,`,`,,`---DateofIssuance:July1,2013ThisinternationalcodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmer-icanNationalStandardsanditisanAmericanNationalStandard.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanoppor-tunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatpro-videsanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublic-at-large.ASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivity.ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareex-presslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibility.Participationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandard.ASMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancewiththeestab-lishedASMEproceduresandpolicies,whichprecludestheissuanceofinterpretationsbyindividuals.Theendnotesinthisdocument(ifany)arepartofthisAmericanNationalStandard.ASMEcollectivemembershipmarkCertificationMarkTheaboveASMEsymbolisregisteredintheU.S.PatentOffice.“ASME”isthetrademarkofTheAmericanSocietyofMechanicalEngineers.Nopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.LibraryofCongressCatalogCardNumber:56-3934PrintedintheUnitedStatesofAmericaAdoptedbytheCouncilofTheAmericanSocietyofMechanicalEngineers,1914;latestedition2013.TheAmericanSocietyofMechanicalEngineersTwoParkAvenue,NewYork,NY10016-5990Copyright©2013byTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllrightsreserved--`,,,,``,,```,``,,`,,`,``,,`,`-`-`,,`,,`,`,,`---TABLEOFCONTENTSListofSections................................................................................viForeword.....................................................................................viiiStatementofPolicyontheUseoftheCertificationMarkandCodeAuthorizationinAdvertising............xStatementofPolicyontheUseofASMEMarkingtoIdentifyManufacturedItems........................xSubmittalofTechnicalInquiriestotheBoilerandPressureVesselStandardsCommittees.................xiPersonnel.....................................................................................xiiiIntroduction...................................................................................xxviiiSummaryofChanges...........................................................................xxixListofChangesinRecordNumberOrder..........................................................xxxCross-ReferencingandStylisticChangesintheBoilerandPressureVesselCode.........................xxxiSubsectionC1Fundamentals...................................................1C1.100SteamGeneration.................................................1C1.200BoilerTypes......................................................1C1.300PackageBoilers...................................................2C1.400Field‐AssembledBoilers............................................2C1.500Combustion......................................................2C1.600BoilerEfficiency..................................................4SubsectionC2BoilerOperation.................................................5C2.100GeneralGuidelines................................................5C2.200PreparingforOperation............................................6C2.300StartingUp.......................................................8C2.400On‐LineOperation.................................................10C2.500Out‐of‐ServiceOperation...........................................15SubsectionC3BoilerAuxiliaries................................................17C3.100PreparationofAuxiliariesforService.................................17C3.200Fuel‐BurningEquipment...........................................17C3.300AirHeaters.......................................................30C3.400Economizers......................................................33C3.500BoilerfeedPumps.................................................34C3.600AuxiliaryDrives...................................................35C3.700DraftFans..........