SVENS K STANDARD SS-EN 13480-3:2017

SVENSK STANDARDSS-EN 13480-3:2017Fastställd/Approved: 2017-08-24Publicerad/Published: 2017-09-18Utgåva/Edition: 3Språk/Language: engelska/EnglishICS: 23.040.01; 23.040.09

Industriella rörledningar av metalliska material – Del 3: Konstruktion och beräkning

Metallic industrial piping – Part 3: Design and calculation

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Europastandarden EN 13480-3:2017 gäller som svensk standard. Detta dokument innehåller den officiella engelska versionen av EN 13480-3:2017.

Denna standard ersätter SS-EN 13480-3:2012 / A1:2017, utgåva 1 och SS-EN 13480-3:2012+C4:2016, utgåva 1.

The European Standard EN 13480-3:2017 has the status of a Swedish Standard. This document contains the official version of EN 13480-3:2017.

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EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM

EN 13480-3 June 2017

ICS 23.040.01 Supersedes EN 13480-3:2012English Version Metallic industrial piping - Part 3: Design and calculationTuyauteries industrielles métalliques - Partie 3 : Conception et calcul Industrielle metallische Rohrleitungen - Teil 3: Konstruktion und Berechnung

This European Standard was approved by CEN on 21 June 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T É E U R O P É E N D E N O R M A L I S A T I O N E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13480-3:2017 E


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Contents

Page

Europeanforeword....................................................................................................................................................10

1 Scope.................................................................................................................................................................12

2 Normativereferences.................................................................................................................................12

3 Terms,definitions,symbolsandunits.................................................................................................13 3.1 Termsanddefinitions................................................................................................................................13 3.2 Symbolsandunits........................................................................................................................................13

4 Basicdesigncriteria....................................................................................................................................15 4.1 General.............................................................................................................................................................15 4.2 Loadings..........................................................................................................................................................15 4.2.1 General.............................................................................................................................................................15 4.2.2 Combinationofloads..................................................................................................................................16 4.2.3 Loadsfordimensioning.............................................................................................................................16 4.2.4 Otherloadstobetakenintoaccount....................................................................................................18 4.2.5 Designconditions.........................................................................................................................................19 4.3 Thickness........................................................................................................................................................22 4.4 Tolerances......................................................................................................................................................25 4.5 Jointcoefficient.............................................................................................................................................25 4.6 Dimensioningofpipingcomponentssubjecttopressure.............................................................26

5 Designstresses..............................................................................................................................................26 5.1 General.............................................................................................................................................................26 5.2 Time‐independentnominaldesignstress..........................................................................................27 5.2.1 Steelsotherthanausteniticsteels.........................................................................................................27 5.2.2 Austeniticsteels............................................................................................................................................27 5.2.3 Nickeland/orchromiumalloysteels..................................................................................................28 5.2.4 Steelscastings................................................................................................................................................28 5.2.5 Additionalrequirementsforsteelswithnospecificcontrol........................................................28 5.3 Time‐dependentnominaldesignstress..............................................................................................29 5.3.1 General.............................................................................................................................................................29 5.3.2 Steels.................................................................................................................................................................29 5.3.3 Nickeland/orchromiumalloysteels....................................................................................................30

6 Designofpipingcomponentsunderinternalpressure.................................................................30 6.1 Straightpipes.................................................................................................................................................30 6.2 Pipebendsandelbows...............................................................................................................................30 6.2.1 General.............................................................................................................................................................30 6.2.2 Symbols............................................................................................................................................................31 6.2.3 Requiredwallthicknesses........................................................................................................................31 6.3 Mitrebends.....................................................................................................................................................32 6.3.1 General.............................................................................................................................................................32 6.3.2 Symbols............................................................................................................................................................32 6.3.3 Effectiveradiusofmitrebend.................................................................................................................33 6.3.4 Multiplemitrebends..................................................................................................................................33 6.3.5 Singlemitrebends.......................................................................................................................................34


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6.3.6 Adjacentstraightpipesectionsofmitrebends.................................................................................34 6.4 Reducers..........................................................................................................................................................34 6.4.1 Conditionsofapplicability........................................................................................................................34 6.4.2 Specificdefinitions.......................................................................................................................................35 6.4.3 Specificsymbolsandabbreviations.......................................................................................................35 6.4.4 Conicalshells..................................................................................................................................................36 6.4.5 Junctions‐general........................................................................................................................................37 6.4.6 Junctionbetweenthelargeendofaconeandacylinderwithoutaknuckle..........................37 6.4.7 Junctionbetweenthelargeendofaconeandacylinderwithaknuckle................................40 6.4.8 Junctionbetweenthesmallendofaconeandacylinder..............................................................41 6.4.9 Offsetreducers..............................................................................................................................................43 6.4.10 Specialforgedreducers..............................................................................................................................43 6.5 Flexiblepipingcomponents......................................................................................................................44 6.5.1 General.............................................................................................................................................................44 6.5.2 Expansionjoints............................................................................................................................................44 6.5.3 Corrugatedmetalhoseassemblies........................................................................................................46 6.6 Boltedflangeconnections.........................................................................................................................47 6.6.1 General.............................................................................................................................................................47 6.6.2 Symbols............................................................................................................................................................47 6.6.3 Standardflange.............................................................................................................................................47 6.6.4 Non‐standardflange....................................................................................................................................48

7 Designofendsunderinternalpressure...............................................................................................48 7.1 Dishedends.....................................................................................................................................................48 7.1.1 Symbols............................................................................................................................................................48 7.1.2 Hemisphericalends.....................................................................................................................................49 7.1.3 Torisphericalends.......................................................................................................................................50 7.1.4 Ellipsoidalends.............................................................................................................................................51 7.1.5 Calculationof..............................................................................................................................................52 7.2 Circularflatends...........................................................................................................................................56 7.2.1 General.............................................................................................................................................................56 7.2.2 Symbols............................................................................................................................................................56 7.2.3 Unstayedflatcircularendsweldedtocylindricalshells/pipes...................................................58 7.2.4 Unstayedflatcircularboltedends..........................................................................................................65 7.2.5 Reinforcementsofopeningsinunstayedflatends..........................................................................71

8 Openingsandbranchconnections.........................................................................................................74 8.1 General.............................................................................................................................................................74 8.2 Symbols............................................................................................................................................................74 8.3 Limitations......................................................................................................................................................75 8.3.1 Thicknessratio..............................................................................................................................................75 8.3.2 Openingsinthevicinityofdiscontinuities..........................................................................................77 8.3.3 Typesofreinforcement..............................................................................................................................79 8.3.4 Calculationmethod......................................................................................................................................80 8.3.5 Ellipticalopeningsandobliquebranchconnections.......................................................................80 8.3.6 Reinforcingpads...........................................................................................................................................82 8.3.7 Dissimilarmaterialofshellandreinforcements..............................................................................82 8.3.8 Extrudedoutlets............................................................................................................................................82 8.3.9 Forgedtee........................................................................................................................................................82 8.3.10 Branchesinbendsorelbows....................................................................................................................83 8.3.11 Screwed‐inbranches...................................................................................................................................83 8.4 Isolatedopenings..........................................................................................................................................84 8.4.1 General.............................................................................................................................................................84 8.4.2 Unreinforcedopenings...............................................................................................................................87


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8.4.3 Reinforcedopeningswithdi/Di<0,8..................................................................................................87 8.4.4 Reinforcedsingleopeningswith0,8<d/D1,0..............................................................................93 8.5 Adjacentopenings........................................................................................................................................93 8.5.1 Unreinforcedopenings...............................................................................................................................93 8.5.2 Reinforcedopeningswithd/D0,8......................................................................................................93 8.6 Designofspecialpipingcomponents....................................................................................................94 8.6.1 CylindricalY‐pieces.....................................................................................................................................94 8.6.2 SphericalY‐pieces........................................................................................................................................95 8.6.3 Triformreinforcedbranches...................................................................................................................96

9 Designofpipingcomponentsunderexternalpressure.................................................................97 9.1 General.............................................................................................................................................................97 9.2 Symbolsandelasticstresslimits............................................................................................................99 9.2.1 Symbols............................................................................................................................................................99 9.2.2 Elasticstresslimits....................................................................................................................................101 9.3 Cylindricalpipes,elbowsandmitrebends.......................................................................................101 9.3.1 Determinationoflengths........................................................................................................................101 9.3.2 Interstiffenercollapse..............................................................................................................................103 9.3.3 Overallcollapseofstiffenedpipes.......................................................................................................105 9.3.4 Stiffenerstability........................................................................................................................................106 9.3.5 Heating/coolingchannels.......................................................................................................................109 9.4 Reducers(conicalshells)........................................................................................................................110 9.5 Dishedends..................................................................................................................................................112 9.5.1 Hemisphericalends...................................................................................................................................112 9.5.2 Torisphericalends.....................................................................................................................................113 9.5.3 Ellipsoidalends...........................................................................................................................................113

10 Designforcyclicloading..........................................................................................................................113 10.1 General...........................................................................................................................................................113 10.2 Exemptionfromdetailedfatigueanalysis........................................................................................113 10.3 Fatiguedesignforcyclicpressure........................................................................................................114 10.3.1 Equivalentfullloadcycles.......................................................................................................................114 10.3.2 Simplifiedfatigueanalysis......................................................................................................................114 10.4 Fatiguedesignforthermalgradients.................................................................................................129 10.4.1 General...........................................................................................................................................................129 10.4.2 Designguidance..........................................................................................................................................129 10.5 Fatiguedesignforcombinedloads......................................................................................................130

11 Integralattachments.................................................................................................................................130 11.1 General...........................................................................................................................................................130 11.2 Allowablestresses.....................................................................................................................................130 11.3 Symbols..........................................................................................................................................................131 11.4 Hollowcircularattachments..................................................................................................................133 11.4.1 Limitations....................................................................................................................................................133 11.4.2 Preliminarycalculations.........................................................................................................................133 11.4.3 Analysisofattachmentsweldedtopipewithafullpenetrationweld....................................135 11.4.4 Analysisofattachmentsweldedtopipewithfilletorpartialpenetrationweld................136 11.5 Rectangularattachments........................................................................................................................136 11.5.1 Limitations....................................................................................................................................................136 11.5.2 Preliminarycalculations.........................................................................................................................136 11.5.3 Analysisofattachmentsweldedtopipewithafullpenetrationweld....................................138 11.5.4 Analysisofattachmentsweldedtopipewithfilletorpartialpenetrationweld................139 11.6 Stressanalysisoftherunpipe...............................................................................................................139 11.7 Shearstressanalysisinattachment....................................................................................................141


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11.7.1 Hollowcircularattachments.................................................................................................................141 11.7.2 Rectangularattachments........................................................................................................................141 11.8 Alternativecalculationmethods..........................................................................................................141

12 Flexibilityanalysisandacceptancecriteria.....................................................................................141 12.1 Basicconditions.........................................................................................................................................141 12.1.1 General..........................................................................................................................................................141 12.1.2 Loadingconditions....................................................................................................................................142 12.1.3 Allowablestresses.....................................................................................................................................142 12.2 Pipingflexibility.........................................................................................................................................144 12.2.1 General..........................................................................................................................................................144 12.2.2 Basicconditions.........................................................................................................................................144 12.2.3 Displacementstrains................................................................................................................................144 12.2.4 Displacementstresses.............................................................................................................................145 12.2.5 Stressrange.................................................................................................................................................146 12.2.6 Coldpull........................................................................................................................................................146 12.2.7 Propertiesforflexibilityanalysis........................................................................................................147 12.2.8 Supportingconditions.............................................................................................................................147 12.2.9 Expansionjoints.........................................................................................................................................149 12.2.10Flexibilityanalysis....................................................................................................................................149 12.3 Flexibilityanalysis....................................................................................................................................151 12.3.1 General..........................................................................................................................................................151 12.3.2 Stressduetosustainedloads................................................................................................................152 12.3.3 Stressduetosustainedandoccasionalorexceptionalloads....................................................152 12.3.4 Stressrangeduetothermalexpansionandalternatingloads.................................................153 12.3.5 Additionalconditionsforthecreeprange........................................................................................154 12.3.6 Stressesduetoasinglenon‐repeatedsupportmovement........................................................154 12.3.7 Determinationofresultantmoments................................................................................................155 12.3.8 Alternativemethodforstresscalculation........................................................................................157 12.3.9 Reactions......................................................................................................................................................157 12.4 Fatigueanalysis..........................................................................................................................................157 12.5 Vibration.......................................................................................................................................................157

13 PipeSupports..............................................................................................................................................158 13.1 Generalrequirements..............................................................................................................................158 13.1.1 General..........................................................................................................................................................158 13.1.2 Classificationofsupports........................................................................................................................158 13.1.3 Additionaldefinitions..............................................................................................................................159 13.1.4 Boundaries...................................................................................................................................................161 13.1.5 Pipesupportsweldedtothepipe........................................................................................................163 13.2 Selectionofpipesupports......................................................................................................................164 13.2.1 General..........................................................................................................................................................164 13.2.2 Detaildesignofpipesupports..............................................................................................................165 13.2.3 Supportlocation.........................................................................................................................................166 13.3 Constanthangers/basemounted(pedestal)constantsupports..............................................166 13.3.1 General..........................................................................................................................................................166 13.3.2 Loaddeviationfromcalibratedload..................................................................................................166 13.3.3 Siteadjustmentofthecalibratedload...............................................................................................166 13.3.4 Travelreserve(Overtravel)...................................................................................................................166 13.3.5 Blocking.........................................................................................................................................................167 13.3.6 IdentificationMarking/Nameplate....................................................................................................167 13.4 Variableloadspringhangersandbasemounted(pedestal)variableloadspring

supports........................................................................................................................................................167 13.4.1 General..........................................................................................................................................................167


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13.4.2 Toleranceonspringrate.........................................................................................................................168 13.4.3 Travelreserve(Overtravel)...................................................................................................................168 13.4.4 Blocking.........................................................................................................................................................168 13.4.5 Nameplate....................................................................................................................................................168 13.5 Rigidstruts...................................................................................................................................................169 13.6 Shockarrestors(shockabsorber,snubber).....................................................................................169 13.7 Slidingsupports..........................................................................................................................................170 13.8 Anchors..........................................................................................................................................................170 13.9 Documentationofsupports....................................................................................................................170 13.10 Markingofsupports..................................................................................................................................170 13.11 Manufacturingofpipesupports...........................................................................................................170 13.11.1Materialrequirements............................................................................................................................170 13.11.2Designtemperaturesforsupportcomponents..............................................................................171 13.11.3Designdetails..............................................................................................................................................172 13.11.4Determinationofcomponentsizes.....................................................................................................173 13.11.5Weldedconnections.................................................................................................................................174 13.11.6Threadedconnections.............................................................................................................................176 13.11.7Additionalrequirementsonsprings..................................................................................................177 13.11.8Designdetailsforrigidstruts...............................................................................................................177 13.11.9Designdetailsforshockarrestors(shockabsorbers,snubbers)............................................178 13.11.10Designdetailsforshockarrestors(shockabsorbers,snubbers)..........................................179

AnnexA(informative)Dynamicanalysis.........................................................................................................180 A.1 General...........................................................................................................................................................180 A.2 Analysisbycalculation.............................................................................................................................180 A.2.1 Seismicevents.............................................................................................................................................180 A.2.2 Rapidvalveclosure...................................................................................................................................184 A.2.3 Flowinducedvibration............................................................................................................................187 A.2.4 Safetyvalvedischarge..............................................................................................................................189 A.2.5 Allowablestresses.....................................................................................................................................192 A.3 Alternativemeansofdesignverification...........................................................................................192 A.3.1 Comparativestudies.................................................................................................................................192 A.3.2 Fullscaletesting.........................................................................................................................................192 A.3.3 Reducedscaletesting...............................................................................................................................192

AnnexB(normative)Moreaccuratecalculationofbendsandelbows.................................................193 B.1 General...........................................................................................................................................................193 B.2 Symbolsandunits......................................................................................................................................193 B.3 Requiredwallthickness..........................................................................................................................194 B.4 Calculation....................................................................................................................................................195 B.4.1 Calculationofwallthickness..................................................................................................................195 B.4.2 Stresscalculation.......................................................................................................................................197

AnnexC(informative)Expansionjoints...........................................................................................................201 C.1 Incorporationofexpansionjointsintopipingsystems................................................................201 C.1.1 General...........................................................................................................................................................201 C.1.2 Typesofexpansionjoints........................................................................................................................202 C.1.3 Designofexpansionjoints......................................................................................................................202 C.1.4 Designingwithexpansionjoints...........................................................................................................203 C.1.5 Analysesandcalculation.........................................................................................................................205 C.1.6 Coldpull.........................................................................................................................................................206 C.2 Maximumspacingforunrestrainedaxiallycompensatedstraightruns...............................206 C.2.1 General...........................................................................................................................................................206 C.2.2 Calculationrules.........................................................................................................................................206


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C.2.3 Maximumspacingfordefinedconditions........................................................................................207 C.3 Indicationforthedesignofexpansionjoints..................................................................................209 C.3.1 General..........................................................................................................................................................209 C.3.2 Informationforthesystemanalyst.....................................................................................................209

AnnexD(normative)Flanges...............................................................................................................................210 D.1 Purpose.........................................................................................................................................................210 D.2 Specifictermsanddefinitions...............................................................................................................210 D.3 Specificsymbolsandabbreviations....................................................................................................211 D.4 General..........................................................................................................................................................212 D.4.1 Introduction................................................................................................................................................212 D.4.2 Useofstandardflangeswithoutcalculation....................................................................................212 D.4.3 Bolting............................................................................................................................................................213 D.4.4 Flangeconstruction..................................................................................................................................215 D.4.5 Machining.....................................................................................................................................................215 D.4.6 Gaskets..........................................................................................................................................................215 D.5 Narrowfacegasketedflanges...............................................................................................................216 D.5.1 General..........................................................................................................................................................216 D.5.2 Boltloadsandareas..................................................................................................................................219 D.5.3 Flangemoments.........................................................................................................................................220 D.5.4 Flangestressesandstresslimits..........................................................................................................220 D.5.5 Narrowfaceflangessubjecttoexternalpressure.........................................................................226 D.5.6 Lapjoints......................................................................................................................................................226 D.5.7 Splitringflanges........................................................................................................................................229 D.6 Fullfaceflangeswithsoftringtypegaskets....................................................................................230 D.6.1 Specificsymbolsandabbreviations....................................................................................................231 D.6.2 Boltloadsandareas..................................................................................................................................231 D.6.3 Flangedesign...............................................................................................................................................232 D.6.4 Fullfaceflangessubjecttoexternalpressure.................................................................................233 D.7 Sealweldedflanges...................................................................................................................................233 D.8 Reversenarrowfaceflanges..................................................................................................................234 D.8.1 Internalpressure.......................................................................................................................................234 D.8.2 Externalpressure......................................................................................................................................236 D.9 Reversefullfaceflanges..........................................................................................................................236 D.9.1 General..........................................................................................................................................................236 D.9.2 DesignfollowingmethodofD.5............................................................................................................236 D.9.3 DesignfollowingmethodofD.6............................................................................................................238 D.10 Fullfaceflangeswithmetaltometalcontact..................................................................................240 D.10.1General..........................................................................................................................................................240 D.10.2Specificsymbolsandabbreviations....................................................................................................240 D.10.3Design............................................................................................................................................................241

AnnexE(normative)Designofbranchconnectionsinpipingaccessories.........................................243 E.1 Scope..............................................................................................................................................................243 E.1.1 General..........................................................................................................................................................243 E.2 Reinforcement............................................................................................................................................245 E.2.1 Anglesandareas........................................................................................................................................245 E.2.2 Thefollowingconditionshallbesatisfied:.......................................................................................245 E.3 Flexibilityanalysis....................................................................................................................................246

AnnexF(informative)Testingduringoperationinthecaseofcyclicloading...................................248 F.1 Testingduringoperation........................................................................................................................248 F.2 Measurestobetakenwhenthecalculatedfatiguelifehasbeenreached............................248

AnnexG(informative)Physicalpropertiesofsteels...................................................................................250


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G.1 General...........................................................................................................................................................250 G.2 Physicalproperties....................................................................................................................................250 G.2.1 Density...........................................................................................................................................................250 G.2.2 Differentialcoefficientoflinearexpansion......................................................................................251 G.2.3 Specificthermalcapacity.........................................................................................................................251 G.2.4 Thermaldiffusivity....................................................................................................................................251 G.2.5 Poisson'sratio.............................................................................................................................................251 G.3 Physicalpropertiesofsteels..................................................................................................................251

AnnexH(normative)Flexibilitycharacteristics,flexibilityandstressintensificationfactorsandsectionmoduliofpipingcomponentsandgeometricaldiscontinuities........................257

AnnexI(informative)Productiontestingofspringsupportsandshockarrestors(shockabsorbers)....................................................................................................................................................267

I.1 Constantloadsupports............................................................................................................................267 I.2 Variablespringsupports.........................................................................................................................267 I.3 Shockarrestors...........................................................................................................................................267

AnnexJ(normative)Typetestingofsupportcomponents........................................................................272

AnnexK(informative)Attachmentofsupportstostructures..................................................................274 K.1 Attachmentofsupportstoconcretestructures..............................................................................274 K.2 Attachmenttometallicstructures.......................................................................................................275 K.2.1 Standardbolts.............................................................................................................................................275 K.2.2 Frictiongripbolts......................................................................................................................................275 K.2.3 Welding..........................................................................................................................................................275

AnnexL(informative)Bucklingoflineartypesupports............................................................................276 L.1 General...........................................................................................................................................................276 L.2 Symbols..........................................................................................................................................................276 L.3 Basic formulae...........................................................................................................................................277 L.4 Allowablecompressivestress...............................................................................................................277 L.5 Bucklinglength...........................................................................................................................................278

AnnexM(informative)Designguidanceforstructuralcomponents.....................................................280 M.1 Lineartypecomponentssubjectedtobending...............................................................................280 M.1.1 General...........................................................................................................................................................280 M.1.2 Supplementaryverificationsforlineartypesupports.................................................................280 M.2 Stabilityofplatetypesupports.............................................................................................................282 M.3 Anchorageplatesorequivalentanchoragecomponents............................................................282 M.3.1 General...........................................................................................................................................................282 M.3.2 Designofsimpleanchorageplates......................................................................................................282 M.3.3 Fixingplateswithstiffeninggussets...................................................................................................283 M.3.4 Loadcalculationsforanchoragesfixedinconcrete......................................................................283

AnnexN(normative)Documentationofsupports........................................................................................284

AnnexO(normative)Alternativemethodforcheckingbranchconnections.....................................286 O.1 Scope...............................................................................................................................................................286 O.2 Symbols..........................................................................................................................................................286 O.3 Designandcheckingofthebranchconnection...............................................................................288 O.3.1 Limitvaluefortheloadduetopressureonlyforstraightpipeswithoutopening............288 O.3.2 Determinationoftheminimumthicknessesunderloadingduetopressureonly............289 O.3.3 Checkingofthethicknessesselectedforthecombinationofpressureloadingand

loadingsduetoexternalloads..............................................................................................................289

AnnexP(informative)Recommendedgasketsforindustrialpiping.....................................................340


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AnnexQ(informative)Simplifiedpipestressanalysis...............................................................................342 Q.1 General..........................................................................................................................................................342 Q.2 Simplifiedprocedure................................................................................................................................342 Q.2.1 General..........................................................................................................................................................342 Q.2.2 Specificationofallowablespacingofsupports...............................................................................342 Q.2.3 Checkofelasticity......................................................................................................................................342 Q.3 ExplanatorynotesforTableQ.1...........................................................................................................344 Q.4 Symbols.........................................................................................................................................................346 Q.5 IndicesfL........................................................................................................................................................346 Q.6 ExplanatorynotestoQ.2.2.....................................................................................................................347 Q.6.1 Specificationofallowablespacingofsupports...............................................................................347 Q.7 Conversionoftheallowablelengths...................................................................................................348 Q.7.1 Othersupportconditions.......................................................................................................................348 Q.7.2 Otherparameters......................................................................................................................................348 Q.8 Additionalsingleloads............................................................................................................................349 Q.8.1 General..........................................................................................................................................................349 Q.9 ExplanatorynoteonFigureQ.2............................................................................................................352 Q.9.1 General..........................................................................................................................................................352 Q.9.2 RequiredpipeleglengthL1,forf1fromthenomogram...............................................................354 Q.9.3 RequiredpipeleglengthL2,forf2fromthenomogram..............................................................354

AnnexY(informative)HistoryofEN13480‐3................................................................................................359 Y.1 DifferencesbetweenEN13480‐3:2012andEN13480‐3:2017.................................................359

AnnexZA(informative)RelationshipbetweenthisEuropeanStandardandtheEssentialRequirementsofEUDirective2014/68/EUaimedtobecovered...........................................361

Bibliography..............................................................................................................................................................362


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Europeanforeword

Thisdocument(EN13480‐3:2017)hasbeenpreparedbyTechnicalCommitteeCEN/TC267“Industrialpipingandpipelines”,thesecretariatofwhichisheldbyAFNOR.

This European Standard shall be given the status of a national standard, either by publication of anidentical text orby endorsement, at the latest byDecember2017, and conflictingnational standardsshallbewithdrawnatthelatestbyDecember2017.

Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.CEN[and/orCENELEC]shallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.

ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropeanFreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s).

For relationship with EUDirective(s), see informative Annex ZA, which is an integral part of thisdocument.

ThisEuropeanStandardEN13480 formetallic industrialpipingconsistsofeight interdependentandnotdissociablePartswhichare:

Part1:General;

Part2:Materials;

Part3:Designandcalculation;

Part4:Fabricationandinstallation;

Part5:Inspectionandtesting;

Part6:Additionalrequirementsforburiedpiping;

CEN/TR13480‐7,Guidanceontheuseofconformityassessmentprocedures;

Part8:Additionalrequirementsforaluminiumandaluminiumalloypiping.

Although these Parts may be obtained separately, it should be recognised that the Parts are inter‐dependant. As such the manufacture of metallic industrial piping requires the application of all therelevantPartsinorderfortherequirementsoftheStandardtobesatisfactorilyfulfilled.

This European Standard will be maintained by a Maintenance MHD working group whose scope ofworkingislimitedtocorrectionsandinterpretationsrelatedtoEN13480.


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The contact to submit queries can be found at http://www.unm.fr ([email protected]). A form forsubmittingquestionscanbedownloadedfromthelinktotheMHDwebsite.Aftersubjectexpertshaveagreedananswer, theanswerwillbecommunicatedto thequestioner.CorrectedpageswillbegivenspecificissuenumberandissuedbyCENaccordingtoCENRules.InterpretationsheetswillbepostedonthewebsiteoftheMHD.

This document supersedes EN13480‐3:2012. This new edition incorporates the AmendmentswhichhavebeenapprovedpreviouslybyCENmembers,and thecorrectedpagesup to Issue5withoutanyfurther technical change. Annex Y provides details of significant technical changes between thisEuropeanStandardandthepreviousedition.

Amendments to this new edition may be issued from time to time and then used immediately asalternativestorulescontainedherein.

According to the CEN‐CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,Croatia, Cyprus, CzechRepublic,Denmark,Estonia, Finland, FormerYugoslavRepublic ofMacedonia,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,Netherlands,Norway,Poland,Portugal,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,TurkeyandtheUnitedKingdom.


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1 Scope

This Part of this European Standard specifies the design and calculation of industrialmetallic pipingsystems,includingsupports,coveredbyEN13480.

2 Normativereferences

The following documents, inwhole or in part, are normatively referenced in this document and areindispensable for its application. For dated references, only the edition cited applies. For undatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.

EN1515‐2:2001, Flanges and their joints— Bolting— Part 2: Combination of flange and boltingmaterialsforsteelflangesPNdesignated

EN1515‐3:2005,Flangesand their joints—Bolting—Part3:Classificationofboltmaterials for steelflanges,Classdesignated

EN1515‐4:2010,Flangesandtheirjoints—Bolting—Part4:SelectionofboltingforequipmentsubjecttothePressureEquipmentDirective97/23/EC

EN 1591‐1:2013, Flanges and their joints— Design rules for gasketed circular flange connections—Part1:Calculationmethod

EN1591‐2:2008, Flanges and their joints— Design rules for gasketed circular flange connections—Part2:Gasketparameters

EN1993(allparts),Eurocode3:Designofsteelstructures

EN10204:2004,Metallicproducts—Typesofinspectiondocuments

EN10216‐2:2013,Seamlesssteeltubesforpressurepurposes—Technicaldeliveryconditions—Part2:Non‐alloyandalloysteeltubeswithspecifiedelevatedtemperatureproperties

EN13445‐3:2014,Unfiredpressurevessels—Part3:Design

EN13480‐1:2017,Metallicindustrialpiping—Part1:General

EN13480‐2:2017,Metallicindustrialpiping—Part2:Materials

EN13480‐4:2017,Metallicindustrialpiping—Part4:Fabricationandinstallation

EN13480‐5:2017,Metallicindustrialpiping—Part5:Inspectionandtesting

ENISO5817:2007,Welding— Fusion‐welded joints in steel, nickel, titanium and their alloys (beamweldingexcluded)—Qualitylevelsforimperfections(ISO5817:2003,correctedversion:2005,includingTechnicalCorrigendum1:2006)


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3 Terms,definitions,symbolsandunits

3.1 Termsanddefinitions

ForthepurposesofthisPartofthisEuropeanStandard,thetermsanddefinitionsgiveninEN13480‐1apply.

3.2 Symbolsandunits

ForthepurposesofthisPartofthisEuropeanStandard,thesymbolsandunitsgiveninEN13480‐1andinTable3.2‐1apply.

Specificsymbolsaredefinedintherelevantsub‐clauses.


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Table3.2‐1—Generalsymbolsandunits

Symbol Description Unit

Pmax maximumpressureobtainedfromthedesignbyformulaeorrelevantproceduresforagivencomponent

MPa(N/mm²)

PSa maximumallowablepressure bar

R,rb radii mm

ReHt minimumspecified value of upper yield strength at calculation temperaturewhenthistemperatureisgreaterthantheroomtemperature

MPa(N/mm²)

S1 meanvalueofthestresswhichleadstoa1%creepelongationin100000h MPa(N/mm²)

S2 meanvalueofthestresswhichleadstoa1%creepelongationin200000h MPa(N/mm²)

SRTt meanvalueofcreeprupturestrengthasindicatedbythestandards,forthematerialinquestionat the considered temperature, t, and for the considered lifetimeT (inhours)whereby thedispersionbandof the resultsdoesnotdeviatebymore than20%fromthemeanvalue.

MPa(N/mm²)

TS maximumallowabletemperature °C

Z sectionmodulusforapipe mm3

c0 corrosionorerosionallowance(seeFigure4.3‐1) mm

c1 absolute value of the negative tolerance taken from the material standard (seeFigure4.3‐1)

mm

c2 thinningallowanceforpossiblethinningduringmanufacturingprocess(seeFigure4.3‐1)

mm

ea analysisthicknessofacomponentusedforthecheckofthestrength(seeFigure4.3‐1)

mm

en nominalthicknessondrawings(seeFigure4.3‐1) mm

eord orderedthickness(seeFigure4.3‐1) mm

er minimum required thickness with allowances and tolerances (seeFigure4.3‐1)

mm

f designstress(seeclause5) MPa(N/mm²)

fcr Designstressinthecreeprange MPa(N/mm²)

ff Designstressforflexibilityanalysis MPa(N/mm²)

pc calculationpressure(see4.2.3.4) MPa(N/mm²)

po operatingpressure(see4.2.3.1) MPa(N/mm²)

tc calculationtemperature(see4.2.3.5) °C

to operatingtemperature(see4.2.3.2) °C

z jointcoefficient(see4.5) ‐

additional thickness resulting from the selection of the ordered thickness (seeFigure4.3‐1)

mm


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aAllpressuresforcalculationpurposesareinMPa(N/mm²)andPSisinbar.bThefollowingsubscriptsapply:

i inside

m mean

o outside

4 Basicdesigncriteria

4.1 General

ThecalculationrulesinthisPartshallapplyforoperatingandtestingconditionsaswellaspreset,coldpullconditions,flushingandcleaningconditions.

The scope of each of the calculation rules is limited on a case by case basis by geometricalcharacteristics which shall be taken into account for each component, loading, failure mode andmaterialproperty.

NOTE WherethisEuropeanStandarddoesnotindicateacalculationrule,itisthedesigner'sresponsibilitytousewidelyacknowledgedcalculation rules, or experimentalmethods to justify thedimensionsand thicknessesselected.

ElasticcalculationmethodsshallbeusedinthisPart,althoughsomecomponentsmightexhibitplasticbehaviour.

Ifshapingandassemblytechniquesspecifictothepressurevesselindustryareusedforlargediameterpipes,therulesapplicabletosuchtechniquesshallbethoserelatingtothedesignofshellsforpressurevessels.Forthegeneralstability,therequirementsofEN13480remainapplicableifthestructure,asawhole,behavesaccordingtothebeamtheory.

Fortemporarypiping,e.g. flushing,cleaningandblow‐throughsystems, thenominaldesignstress forthedesignconditionsshallbeused.

Piping for fluidswhich are likely to cause condensation shall be installedwith adequate slopes andtraps.

4.2 Loadings

4.2.1 General

Anypipingsystemissubjectedtoanumberofloadingsduringitslifetime.Theseloadingscanbeoneoracombinationofthefollowingloads:

internaland/orexternalpressure;

temperature;

weightofpipingandcontents;

climaticloads;

dynamiceffectsofthefluid;

movementsofthegroundandbuildings;


Documents

SVENS K STANDARD SS-EN 13480-3:2017