Table Of Content2013
ASME Boiler and
Pressure Vessel Code
AN INTERNATIO NAL C ODE
VI
Recommended Rules
for the Care and Operation
of Heating Boilers
--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`---
5/15/13 5:15 PM
--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`---
AN INTERNATIONAL CODE
2013 ASME Boiler &
Pressure Vessel Code
2013 Edition July 1, 2013
VI
RECOMMENDED RULES FOR
THE CARE AND OPERATION OF
HEATING BOILERS
--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`--- AonSMHEeaBtionigleBroainledrsPressure Vessel Committee
Two Park Avenue (cid:129) New York, NY (cid:129) 10016 USA
DateofIssuance:July1,2013
ThisinternationalcodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmer-
icanNationalStandardsanditisanAmericanNationalStandard.TheStandardsCommitteethatapprovedthecode
orstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanoppor-
tunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatpro-
vides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-
at-large.
ASME does not “approve,”“rate,” or“endorse” any item, construction, proprietary device, oractivity.
ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithany
itemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityfor
infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are ex-
pressly advised that determination of the validity of any such patent rights, and the risk of infringement of such
rights, is entirely theirown responsibility.
Participationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedas
government or industry endorsementof this code or standard.
ASMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancewiththeestab-
lished ASME procedures and policies, which precludes the issuance of interpretationsby individuals.
The endnotes in this document (if any) arepartof this American National Standard.
ASMEcollectivemembershipmark
CertificationMark
TheaboveASMEsymbolisregisteredintheU.S.PatentOffice.
“ASME”isthetrademarkofTheAmericanSocietyofMechanicalEngineers.
Nopartofthisdocumentmaybereproducedinanyform,inanelectronicretrieval
systemorotherwise,withoutthepriorwrittenpermissionofthepublisher.
LibraryofCongressCatalogCardNumber:56-3934
PrintedintheUnitedStatesofAmerica
AdoptedbytheCouncilofTheAmericanSocietyofMechanicalEngineers,1914;latestedition2013.
TheAmericanSocietyofMechanicalEngineers
TwoParkAvenue,NewYork,NY10016-5990
Copyright©2013by
THEAMERICANSOCIETYOFMECHANICALENGINEERS
Allrightsreserved
--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`---
TABLE OF CONTENTS
ListofSections ................................................................................ vi
Foreword ..................................................................................... viii
StatementofPolicyontheUseoftheCertificationMarkandCodeAuthorizationinAdvertising ............ x
StatementofPolicyontheUseofASMEMarkingtoIdentifyManufacturedItems ........................ x
SubmittalofTechnicalInquiriestotheBoilerandPressureVesselStandardsCommittees ................. xi
Personnel ..................................................................................... xiii
SummaryofChanges ........................................................................... xxviii
ListofChangesinRecordNumberOrder .......................................................... xxix
Cross-ReferencingandStylisticChangesintheBoilerandPressureVesselCode ......................... xxx
Section1 General ......................................................... 1
1.01 Scope ............................................................ 1
1.02 UseofIllustrations ................................................ 1
1.03 Manufacturer’sInformation ......................................... 1
1.04 ReferencetoSectionIV ............................................ 1
1.05 GlossaryofTerms ................................................. 1
Section2 TypesofBoilers ................................................. 16
2.01 Classification ..................................................... 16
2.02 SteelBoilers ...................................................... 16
2.03 CastIronBoilers .................................................. 16
2.04 ModularBoilers ................................................... 16
2.05 VacuumBoilers ................................................... 16
--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`---SS444ee...000cc231ttiioonn34 AAIFLFGniuuaccqscescetueleal—essslOflssaiioe.olNtsrdi.roia.eintPe..sues..rt....aar....lon,....ldMe....u....aIm....nn....su....Gtfa....aal....cslt....au(....tLri....ePo....dGn....,)....M...........ix......e......d................................................................................................................................................................................................................................................... 42244242182212
4.04 Coal ............................................................. 42
4.05 Electricity ........................................................ 43
Section5 FuelBurningEquipmentandFuelBurningControls ................. 44
5.01 GasBurningEquipment ............................................ 44
5.02 OilBurningEquipment ............................................. 44
5.03 CoalBurningEquipment ........................................... 44
5.04 Controls ......................................................... 45
Section6 BoilerRoomFacilities ............................................ 50
6.01 General .......................................................... 50
6.02 Safety ........................................................... 50
6.03 Lighting .......................................................... 50
6.04 Ventilation ....................................................... 50
6.05 WaterandDrainConnections ....................................... 50
6.06 FireProtection .................................................... 50
6.07 Housekeeping .................................................... 50
6.08 PostingofCertificatesand/orLicenses ............................... 51
6.09 Recordkeeping,Logs,etc. ........................................... 51
iii
Section7 Operation,Maintenance,andRepair—SteamBoilers ............... 52
7.01 StartingaNewBoilerandHeatingSystem ............................ 52
7.02 StartingaBoilerafterLayup(SingleBoilerInstallation) ................. 53
7.03 Condensation ..................................................... 53
7.04 CuttinginanAdditionalBoiler ...................................... 53
7.05 Operation ........................................................ 53
7.06 RemovalofBoilerFromService ..................................... 55
7.07 Maintenance ...................................................... 55
7.08 BoilerRepairs .................................................... 57
7.09 TestsandInspectionsofSteamHeatingBoilers ........................ 57
Section8 Operation,Maintenance,andRepair—HotWaterBoilersandHotWater
HeatingBoilers ................................................ 61
8.01 StartingaNewBoilerandHeatingSystem ............................ 61
8.02 StartingaBoilerAfterLayup(SingleBoilerInstallation) ................ 61
8.03 Condensation ..................................................... 62
8.04 CuttinginanAdditionalBoiler ...................................... 62
8.05 Operation ........................................................ 62
8.06 RemovalofBoilerfromService ...................................... 62
8.07 Maintenance ...................................................... 63
8.08 BoilerRepairs .................................................... 65
8.09 TestsandInspectionsofHotWaterHeatingandSupplyBoilers .......... 65
Section9 WaterTreatment ................................................ 69
9.01 Scope ............................................................ 69
9.02 Considerations .................................................... 69
9.03 ServicesofWaterTreatmentSpecialists .............................. 69
9.04 ConformitywithLocalOrdinances ................................... 69
9.05 BoilerWaterTroubles ............................................. 69
9.06 ChemicalsUsed ................................................... 69
9.07 FunctionsofChemicals ............................................. 70
9.08 TreatmentAlternatives ............................................. 70
9.09 Blowdown ....................................................... 70
9.10 Feeders .......................................................... 71
9.11 Procedures ....................................................... 71
9.12 WaterTreatmentTerms ............................................ 71
MandatoryAppendixI Exhibits ......................................................... 73
MandatoryAppendixIII StandardUnitsforUseinEquations ............................... 86
NonmandatoryAppendixA GuidancefortheUseofU.S.CustomaryandSIUnitsintheASMEBoiler
andPressureVesselCode ....................................... 87
FIGURES
2.02A-1 HorizontalReturnTube,Brick‐Set ...................................................... 17
2.02A-2 GasFlowPatternsofScotch‐TypeBoilers ................................................ 17
2.02A-3 TypeCFireboxBoiler ................................................................. 18
2.02A-4 Three‐PassFireboxBoiler ............................................................. 18
2.02A-5 LocomotiveFireboxBoiler ............................................................. 19
2.02A-6 VerticalFiretubeBoiler ............................................................... 19
2.03A HorizontalSectionalCastIronBoiler .................................................... 20
2.03B VerticalSectionalCastIronBoiler ...................................................... 20
2.04A ModulesConnectedWithParallelPiping ................................................. 20
2.04B ModulesConnectedWithPrimary‐SecondaryPiping ....................................... 20
3.01 OfficialCertificationMark ............................................................. 21
3.01A SafetyValve ......................................................................... 22
3.01B SafetyReliefValve .................................................................... 23
3.02A FloatTypeLow‐WaterCutoff .......................................................... 23
iv
--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`---
3.02B ElectricProbeTypeLow‐WaterControl ................................................. 24
3.03-1 ThermostaticTrap .................................................................... 25
3.03-2 FloatTrap ........................................................................... 25
3.03-3 FloatandThermostaticTrap ........................................................... 25
3.03-4 BucketTrapWithTrapClosed ......................................................... 25
3.05 TypicalReturnLoop .................................................................. 26
3.11 PressureGages ...................................................................... 27
3.20I SafetyReliefValveDischargePipe ...................................................... 31
3.30-1 SingleHotWaterHeatingBoiler—AcceptablePipingInstallation ........................... 34
3.30-2 HotWaterHeatingBoilersinBattery—AcceptablePipingInstallation ....................... 35
3.30-3 SingleSteamBoilers—AcceptablePipingInstallation ..................................... 36
3.30-4A SteamBoilersinBattery—PumpedReturn—AcceptablePipingInstallation ................. 37
3.30-4B SteamBoilersinBattery—GravityReturn—AcceptablePipingInstallation .................. 38
5.01A AtmosphericGasBurner .............................................................. 45
5.01C CombinationFuelBurners ............................................................. 46
5.02A High‐PressureAtomizingBurner ....................................................... 46
5.02D HorizontalRotaryCupFuelOilBurner .................................................. 47
5.03-1 UnderfeedSingle‐RetortStoker ......................................................... 48
5.03-2 OverthrowReciprocatingPlate-Feed-TypeSpreaderStoker ................................. 48
5.03-3 ChainGrateStokerWithSectionShowingLinks ........................................... 49
TABLES
3.20 MinimumPoundsofSteamPerHourPerSquareFootofHeatingSurface(kg/h/m2) ........... 28
3.31C-1 ExpansionTankCapacitiesforGravityHotWaterSystems ................................. 39
3.31C-2 ExpansionTankCapacitiesforForcedHotWaterSystems .................................. 40
3.33 SizeofBottomBlowoffPiping,Valves,andCocks ......................................... 40
III-1 StandardUnitsforUseinEquations .................................................... 86
FORMS
I.01-1 ExhibitA ............................................................................. 74
I.02-1 ExhibitB ............................................................................. 77
ENDNOTES ................................................................................... 91
INDEX ........................................................................................ 93
v
--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`---
LIST OF SECTIONS
ð13Þ
SECTIONS
I RulesforConstructionofPowerBoilers
II Materials
• PartA—FerrousMaterialSpecifications
• PartB—NonferrousMaterialSpecifications
• PartC—SpecificationsforWeldingRods,Electrodes,andFillerMetals
• PartD—Properties(Customary)
• PartD—Properties(Metric)
III RulesforConstructionofNuclearFacilityComponents
• SubsectionNCA—GeneralRequirementsforDivision1andDivision2
• Appendices
• Division1
– SubsectionNB—Class1Components
– SubsectionNC—Class2Components
– SubsectionND—Class3Components
– SubsectionNE—ClassMCComponents
– SubsectionNF—Supports
– SubsectionNG—CoreSupportStructures
– SubsectionNH—Class1ComponentsinElevatedTemperatureService
• Division2—CodeforConcreteContainments
• Division3—ContainmentsforTransportationandStorageofSpentNuclearFuelandHighLevelRadioactive
MaterialandWaste
• Division5—HighTemperatureReactors
IV RulesforConstructionofHeatingBoilers
V NondestructiveExamination
VI RecommendedRulesfortheCareandOperationofHeatingBoilers
VII RecommendedGuidelinesfortheCareofPowerBoilers
VIII RulesforConstructionofPressureVessels
• Division1
• Division2—AlternativeRules
• Division3—AlternativeRulesforConstructionofHighPressureVessels
IX Welding,Brazing,andFusingQualifications
X Fiber-ReinforcedPlasticPressureVessels
XI RulesforInserviceInspectionofNuclearPowerPlantComponents
XII RulesforConstructionandContinuedServiceofTransportTanks
vi
--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`---
INTERPRETATIONS
ASMEissueswrittenrepliestoinquiriesconcerninginterpretationoftechnicalaspectsoftheCode.
InterpretationsoftheCodearepostedinJanuaryandJulyathttp://cstools.asme.org/interpretations.cfm.AnyInterpre-
tationsissuedduringtheprevioustwocalendaryearsareincludedwiththepublicationoftheapplicableSectionofthe
Code.InterpretationsofSectionIII,Divisions1and2andSectionIIIAppendicesareincludedwithSubsectionNCA.
CODE CASES
TheBoilerandPressureVesselCodecommitteesmeetregularlytoconsiderproposedadditionsandrevisionstothe
Codeand toformulate Cases toclarify the intent ofexisting requirementsor provide, when theneed is urgent, rules
for materialsor constructions notcovered by existing Code rules.ThoseCasesthat havebeenadopted willappearin
theappropriate2013CodeCasesbook:“BoilersandPressureVessels”or“NuclearComponents.”Supplementswillbe
sentautomaticallytothepurchasersoftheCodeCasesbooksuptothepublicationofthe2015Code.
--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`---
vii
FOREWORD
ð13Þ
(ThisForewordisprovidedasanaidtotheuserandisnotpartoftherulesofthisCode.)
In1911,TheAmericanSocietyofMechanicalEngineersestablishedtheBoilerandPressureVesselCommitteetofor-
mulatestandardrulesfortheconstructionofsteamboilersandotherpressurevessels.In2009,theBoilerandPressure
VesselCommitteewassupersededbythefollowingcommittees:
(a)CommitteeonPowerBoilers(I)
(((((((--``,``,`,````,````````,,,,``,,`-`-`,,`,,`,`,,`---bcdefgh)))))))CCCCCCCooooooommmmmmmmmmmmmmiiiiiiitttttttttttttteeeeeeeeeeeeeeooooooonnnnnnnMCHNPWFioreobaeenantelsestddrsitri-neurniRsagurgetlecs,rBitnuBVio(ofcreIiontIlasei)rzsvcroeiesenfldsgE(NI,x(PVuaValc)namIlIsdeIita)niFrcautFPsiaorincenisgls(it(VuyIr)XeC)oVmespsoenlsen(Xts)(III)
(i) CommitteeonNuclearInserviceInspection(XI)
(j) CommitteeonTransportTanks(XII)
Wherereferenceismadeto“theCommittee”inthisForeword,eachofthesecommitteesisincludedindividuallyand
collectively.
The Committee's function is to establish rules of safety relating only to pressure integrity, which govern the
construction*ofboilers,pressurevessels,transporttanks,andnuclearcomponents,andtheinserviceinspectionofnu-
clearcomponentsandtransporttanks.TheCommitteealsointerpretstheseruleswhenquestionsariseregardingtheir
intent.ThisCodedoesnotaddressothersafetyissuesrelatingtotheconstructionofboilers,pressurevessels,transport
tanks,ornuclearcomponents,ortheinserviceinspectionofnuclearcomponentsortransporttanks.UsersoftheCode
shouldrefertothepertinentcodes,standards,laws,regulations,orotherrelevantdocumentsforsafetyissuesotherthan
thoserelatingtopressureintegrity.ExceptforSectionsXIandXII,andwithafewotherexceptions,therulesdonot,of
practicalnecessity,reflectthelikelihoodandconsequencesofdeteriorationinservicerelatedtospecificservicefluidsor
externaloperatingenvironments.Informulatingtherules,theCommitteeconsiderstheneedsofusers,manufacturers,
andinspectorsofpressurevessels.Theobjectiveoftherulesistoaffordreasonablycertainprotectionoflifeandprop-
erty,andtoprovideamarginfordeteriorationinservicetogiveareasonablylong,safeperiodofusefulness.Advance-
mentsindesignandmaterialsandevidenceofexperiencehavebeenrecognized.
ThisCodecontainsmandatoryrequirements,specificprohibitions,andnonmandatoryguidanceforconstructionactiv-
itiesandinserviceinspectionandtestingactivities.TheCodedoesnotaddressallaspectsoftheseactivitiesandthose
aspectsthatarenotspecificallyaddressedshouldnotbeconsideredprohibited.TheCodeisnotahandbookandcannot
replaceeducation,experience,andtheuseofengineeringjudgment.Thephraseengineeringjudgementreferstotechnical
judgmentsmadebyknowledgeableengineersexperiencedintheapplicationoftheCode.Engineeringjudgmentsmustbe
consistentwithCodephilosophy,andsuchjudgmentsmustneverbeusedtooverrulemandatoryrequirementsorspecific
prohibitionsoftheCode.
TheCommitteerecognizesthattoolsandtechniquesusedfordesignandanalysischangeastechnologyprogressesand
expectsengineerstousegoodjudgmentintheapplicationofthesetools.Thedesignerisresponsibleforcomplyingwith
CoderulesanddemonstratingcompliancewithCodeequationswhensuchequationsaremandatory.TheCodeneither
requiresnorprohibitstheuseofcomputersforthedesignoranalysisofcomponentsconstructedtotherequirements
oftheCode.However,designersandengineersusingcomputerprogramsfordesignoranalysisarecautionedthatthey
areresponsibleforalltechnicalassumptionsinherentintheprogramstheyuseandtheapplicationoftheseprogramsto
theirdesign.
*Construction,asusedinthisForeword,isanall-inclusivetermcomprisingmaterials,design,fabrication,examination,inspection,testing,cer-
tification,andpressurerelief.
viii
