石油化工钢制低温储罐技术规范

ThiscodeisdevelopedbyChinawiththerequirementsofDocumentJIANBIAO〔2006〕No.136issuedbyoriginalMinistryofConstruction(MOC)ofthePeople'sRepublicofChina-thePlanforDevelopingandReviEngineeringConstructionStandards(2nGroupparties,andthenfinalizedthiscBasicRequirements,Materials,DesignofMetallicComponents,DesignofConcreteStructures,Insulation,Fabrication,InspectionandAcceptanceofMetalMinistryofHousingandUrban-RuralDevelopmentofthePeople'ofadministrationofthiscode,ChinaPetroleumlandChemicalmanagement.SinopecLuoyangPetrochemicalEngineeringCorporationistaskedforexplanationofspecifictechnicalcontents.DuringimplementationcanbepostedorpassedontoSinopecLuoyangPetrochemicalEngineeringNo.27ZhongzhouXilu,LuoyangCity,HenanProvince,P.R,China,postcode:areferenceforfutuChiefdevelopmentorganization,co-developmentorganization,participaization,chiefdrafterandchiefreviewersofthecode:ChiefDevelopmentOrganization:ChinaPetroleumandChemicalSinopecLuoyangPetrochemicalEngineeringCorporatSinopecNanjingEngineeringandConstruParticipatingDevelopmentOrgaChiefDrafter:XuMaokunChenChonggangLiLiLisongMiaoPingJuJingZhangXiangdoChiefReviewer:WuTongzhuHuangZuojianDuanRuiZhouJiaxiangYangYGeChunyuQiuZhenghuaZhaoYuchuanLiJiaHanYumeiLiLinjiangGouSWangZhaoweiLuoPingLingYiminWoWangShuipingChenJingpingYin 5DesignofMetallicComponents AppendixAMainPhysi AppendixBDesignConditionsofTanks AppendixDReinforcem AppendixECommonInsulationMaterialsandApplica ExplanationofWordinginThisCode 1.0.1Thiscodespecifiesthedes1.0.2Thiscodeisapplicabletothedesignsinglecontainmenttanks,doublecontainmenttanksandfullcontainmentorammoniawithboilingpointbetween0℃aThiscodeisnotapplicabletomembranetanksandpritemsinadditiontothetankbodyandtheintegralpartsconnected1Theconnectionsbetweenthetankandthepipe1)Thefirstcircumfer2)Thefirstthreadedjointonthepipeoutsidethetankwallinthreadedpipeconnections;3)Thefaceofthefirstflangeinabolte3Thecoldinsulationofthetankbottom,tankshell,tankroofandnozzles.5TheanchoringstructureofthtanksshallalsocomplywiththecurrentaAssumedgaugepressurefortheoverheadvapourspaceunderoperatingconditAssumedmaximumpositivepressure(gauge)fortheoverheadvapourspaceinthetank.2.0.3DesignnegativepAssumedmaximumnegativepressurefortheoverheadvapourspaceinthetank.Airpressure(gauge)intheoverheadspaceofthetankduringtesting.Pressureatwhichthepressurereliefdevicefirstopens.Assumedtemperatureofthemedium,forwhichthetankisdesigned.2.0.7DesignmetalMinimumtemperatureforwhichthemetalliccomponenti2.0.8MaximumdesigMaximumpermissibleliquidlevelforMaximumliquidlevelthatwill2.0.10SinglecontainmeAtankconsistingofonlyonepri2.0.11DoublecontainmofaprimaryliquidcontainerandasecondarycontainerthfcontaininganyleakageoftherefrigeratedliquidbuAtankwhichisdefinedasatankconsistingofapri2.0.13PrimaryliquidPartofasingle,doubleorliquidduringnormalPartoftheoutercontainerofadoubleMetallicself-supporting2.0.17RoofPartofasingle,doubleo2.0.20SupportingroofoftankAtypeoftankroofforwhichitsloadissupportedbybeams,c2.0.21Self-supportingroofoftankAtypeoftankroofforwhichitsloaUncontrolledmassmovementofstoredliquid,correctinganunstablestateofstratifieddensitiesandresultinginaBarriertoprevententryofw2.0.25PercentageofplasticelongationThepercentageofplasticelongationisthepermanentpercentileincreaseoftheoriginalgaugelengthcorresponding3.1.2AsinglecontainmenttankmaybeasingFigure3.1.2-1Singlecontainmenttankwit1-Foundationheatingsystem;2-Foundation;3-Bott5-Flexibleinsulatingseal;6-Suspendedroof(in8-Externalshellinsulation;9-Externalwatervapourbarrier;Figure3.1.2-2Singlecontainment1-Foundationheatingsystem;2-Found4-Primarycontainer(steel);5-Flexibleinsulati6-Suspendedroof(insulated);7-Roof(steel);8-Losefillins3.1.3Adoublecontainmenspace,betweentheprimaryandsecondarycontainers,shouspace,betweentheprimaryandsecondarycontainers,shouldno88Figure3.1.3-1Doublecontainmenttank1-Foundationheatingsyst4-Secondarycontainer(steel);5-Primarycontainer(steel);6-Flexibleinsulatingseal;7-Suspendedroof(insulated);8-Roof(steel);9-Cover(rainshi10-Externalinsulation;188Figure3.1.3-2Doublecontainmenttankwithsecondarypre-stressedconcre1-Foundationheatingsystem;2-Fo4-Secondarycontainer(concrete);5-Primaryc6-Flexibleinsulatingseal;7-10-LosefillinsulFigure3.1.4-1Fullcontainmenttank1-Foundationheatingsystem;2-Found4-Secondarycontainer(steel);5-Primarycontainer6-Flexibleinsulatingseal;7-1-Foundationheatingsystem;2-Foundation;3-Bottominsulation;4-Primary5-Flexibleinsulatingseal;6-Suspendedroof(ins8-Insulationoninsideofpre-stressedconcreteouter3.2.1ThemainphysicalpropertiesofgasesstoredinthelowtemperaturepetrochemicalservicesshallbeinaccordancewithAppendixAofthis3.2.2Thelowtemperatu3Boil-offiscontrolled5Ingressofairandmoistureisprevented,exceptinexceptionalcaseswhenthevacuumrelief6Boil-offisasspec7Damageduetospecifiedacareaswithseismicprecautionaryintensityhigherthan9degreesorwithdesignbas3.2.4Seismicdesignshallbemaddegreesorwithdesignbasicaccelerationofgroundmotionnolessthan0.05g.Seismictemperaturesteelstoragetanksforpetrochemicalserviceapourbarriermaybeprovidedfortheouterpre-stressedconcretetfthepre-stressedconcretestructure,withoutaliquidtightliner,shallbeens3.2.6Allinletsandoutletsshould,preferably,bemadeattheroofofthetank.Incaseswherebottom3.2.7Fixedconnectionsshould,preferably,noandsecondarycontainers.Andiffixedconnectionsarerequired,theyshallcoinArticle5.7ofthis3.2.8TheprimarycontainerstanksforpetrochemicalseTanksettlementshouldcomplywiththefol1Forsteelstoragetanks,theirdifferentialsettlement(thebetweenthetankcenterandtheperimetershallnotexceed1/240ofthetankradius.settlementbetweenthetankcenterandtheperimetershallnotexcstoragetankforpetrochemicalservice.Thefoundatthatthetemperatureofthefoundationshallnotdropbelow03.2.11Thermalprotectionsystemshallbeprovidedforthepre-stressedcThethermalprotectionsystemshallcconsistofsteelplates(doublebottom)andinsulationmaterial.3.2.12Theheightoftheverticalpartofthethermalprotectionsystetemperaturedistributionandthedeformationoftherigidcorner.3.2.13ProtectionagainsttheimpactoflightningshallbeprovidedforCodefordesignprotectionofstructureagainstlightningGB50057,andCodefordesignprotectionofpetrochemicalplantagainstlightningGB5064FirefightingfacilitiesforlowtemperatureinaccordancewiththecurrentnationalstandardFirepreventioncodeofpetrochemicalenterprise3.2.15Thedesignloadsoflowtemperaturesteelstoragetankforpetrochemicalserviceshallinclude:2Hydrostaticloadofthemedium.1)Uniformlydistributedloadof1.2)Uniformlydistributedloadof2.4kN/m²actingontheplatforms3)Concentratedloadof5kNoveranareaof300mm×300mmplacedatanylocatio8Thepressureexertedbythecoldinsulationsystem(includingperlitepowder).2.16Thecorrosionallowanceofthecomponentsoflowtemperaturesteelstorageretrochemicalservicesshallbedeterminedbasedoncorrosivechd4.1.1Steelsusedfowithqualitycertificatessuppliedbythesteelmanufbasedonthetankoperatingconditions,thematerialperformancesandeconomicconsi4.1.3Thematerialsusedtoconstructconcretecomponentsinlowlowtemperatureresista4.1.4Thesteeloftheprimarycontainerandsecondarysteel\forgingsandlowtemperature4.1.5Thedesignmetaltemperatureforeachco4.1.6Anyspecialrequirementsforsteels,ifanyIPrimaryandSecond4.2.1ThedeliverystatesofsteelplatesusedforlowtempeservicesshallbeinaccoMin.design102034Normalized,normalized5Normalized,normalized6Normalized,normalizedMin.design789Notes:1Thecompressionratioshallnotbelessthan3forthesteelplatesmadebycontinuou2SeetheListofReferenceCodescompletedplatefromwhichliquidcontainingtankp4.2.3WhereQ245RandQ345Rsteelplatesofthicknessgreaterthan25mmshellandbottomoftheprimarycontainerorthesecondarycontainer,theysh4.2.4Wherethefollowingsteelcontainerandthesecondarycontainer,eachpexaminationmethodandqualitygrade/shallbeinaccordancewithstandardNondestructivetestingofpressureequipment-part3:ultrasonictestingJB/T4730.3:2For16MnDR,15MnNiDacceptancequalitycriterionshall3ForQ370Rsteelplateofthmaybeusedforsubs4.2.6Wherealuminumisusedtoconstructthealuminumprofilesshallbeinaccordancewiththecuraluminumandaluminumalloyplates,sheetsandstripsforgeneralengineeringGB/T3880.1~GB/T3880.3andWroughtaluminumandaluminumalloyextrudedprofilesforgeneralengineering4.2.7ThedeliverystatesofsteelpipesaccordancewithspecificationsinMin.design1203456789Note:SeetheListofReferenceCodes/Standardsforthestan4.2.8ThematerialsofforgingsLow-alloysteelforgingsforlowtemperaturepressureequipmentsNB/T47009andStainlessandheat-resistingsteelforgingsforpressureequipmentsNB/T470Thematerialsofbolts,studsandnutsusedfortanknozzleflangesshallcomplywiththnationalstandardPressurevessels-part2:MaterialsGB150.2.4.2.10ThedeliverystatesofsteelplatesusedforvapourcontainspecificationsinMin.design10203405067Normalized,normalizedNote:SeetheListofReferenceCodes/Standardsforthestandardnamesofthesteelplatesshowninthetabl4.2.11Weldingconsumablesshallbedeterminedbasedontperformancesandweldingperformancesoftheparentmetalsaswellastheconstructioncharacteristics,serviceconditionsandweldingproceduresofthestoragetanks,andtheyshallbedeterminedbytestingifshallensuretheanti-crackingperformanceandmechanicalperformanceofthnotbelowerthanthelowerlimitoftheparentmetalinlowerstrength.4.2.14Weldingsteelshallensurethecrackresistantperformanceandmechanicalperformanceoftheweldjoints,andtheweldingconsumableswithNi-Crcontenthigherthanthatofthehigh4.2.15Weldingmaterialsusedforprimaryliquidcontainershallbe4.3.2Enhancedstrength,thatisknowntoexistemperature,isnormallynotusedindeterminingthwhenadequatetestingdataisavailable,thelowtemperaturepropertiesmaybeutilize4.3.3Admixturesofcertainratiomaybeconsideredappropriateforconcrete.4.3.4Whereairentrainingagentsareu4.3.5ConcretematerialshouldbePortlandcementwithlowheatofhydration,groundgranulatedblastdesignershallbeawarethat4.3.6ThelowtemperatureconcretemixingproportionshallbedeterminedbylabstandardStandardforcorrosionprotectiondesignforindustrialconstructionsGB50046.4.3.8TypicalyieldstrengthofreinforcingsteelforconcretetankmaybPre-stressedwall(including4.3.92.0×10⁵N/mm²maybetakenasthemodulusofelasticityof4.3.10ThereinforcingsteelshallcomplywiththefothecurrentnationalstandardStandardatlowtemperature,andtheresultdifferenceofthesetestsshallbewithin4.3.11InadditiontotherequirementsspecifiedinTable4.3.8ofthiscode,thelowtresistantsteelintheinteriorwallofthepre-strequirementsatlowtemperaturesspecifiedinAttacfailstosatisfytheductalternativesmaybecon2Reducingallowabletensilestressofreinforcingorpre-stressingsteel.4.3.12Pre-stressingsteelshallcomplywiththefphysicalandmechanicalpronotexceed80%oftypicalultimatestrengthofthepre-stressingsteejackingfor1000hshallnotbehigherthan2.5%.2Themodulusofelasticit4Pre-stressingsteelshouldnotbewelded,andonlytheweldfatigue-resistantdesignrequirements,andtheirspecificationsshalstandardAnchorage,gripandcouplerforpre-stressingtendonsGB/T14370.TheanchorageshallhaveproperlyworkincaseofcrackicurrentnationalstandardSteelwiresforthepre-stressedofconcreteGB/T5223.5DesignofMetallicCo5.1.1Thelowtemperaturesteelstoragetavariouscombinationsoflo5.1.2ThemaximumallowabletensilestressofanyplateorweldQ370R、16MnDR、15MnNiDR、090.43Rm,0.67Re,ThelesNotes:1Rmisspecifiedtensilestrengthlowerlimit,inMPa,andReisspe2For9%Nisteel,Rmaybe0.2%ofproofstress(non-proportional)inMPa.3Forausteniticsteel,Rmaybe1.0%ofp2Forseldomoccurredearthqua4Seldomoccurredea5.1.5ShellattachmentscapacityoftheuncorrodedanchormaterialyieldstressattheboilingpointtemperacharacteristicsofliquefiednaturalgasGB/T19204orcolder.5.1.7Theallowablecompressivestressofthecompressionareaatroof-to-shelljunctionsh5.1.8Forbuttwelds,wheretheloadisperpendiculartotheweldandintheplaneoftheplates,5.1.9Forfilletwelds,wheretheloadisperpendiculartothewlimitedto70%ofthevaluegiveninTable5.1.2,andwheretheloadisparalleltallowableshearstresssha5.2.1Theannularplatesoftankbottomshallhaveamwhere:ta——theminimumthicknessofannularplate,inmm;t₁——thethicknessofthebottomshellcourse,inmm.5.2.2Thejointoftankbottomandthebottomshellcourse1-Shell;2-Annularplate;3-SketchplateWhere:ta——thethicknessoftheannularplate,inmm;2Theradialjointsbetweenannularplatesshallbebuttwelded.2)Forthefilletweldedatbothsides,the3)Grooveweldplusfilletforannula4Annularplateradialjointsshallnotbeloc6Layoutsanddetailsfortankbottomandannula7Theannularplatewidthan5.2.3Theminimumthicknessofthebottomplates(excludingcorrosfollowingrequirements1Minimumlength3Lapjointsshallhaveaminimumoverlapoffivetimesthethicknessof6Buttweldsinbottomplat7Minimumdistancebetweenindividualplatejointsshallbe300mm.8Wherereinforcingplatesorbackingstripsarefittedtothebott5.2.4Theminimumshellplatet5685.2.5Thethicknessoftheshellplateshallbethegreatestofthecalculatedplatethicknesstaunderoperatingconditions,thecalculatedplatethicknesstunderhydrostatictestconditionandtankshellthickness.ThecalculatedplatethicknesstathicknesstunderhydrostatictestcWhere:C——theadditionalthickness,inmm;C₁——thenegativethicknessdeviatiC₂——thecorrosionallowance,inmD——theinsidediameteroftankta——thecalculatedwallplatethickt.——thecalculatedwallplatethicknessunderhyH——theheightfromthebottomofthecourseunderconsiderationtothemaximumdesignH——theheightfromthebottomofthecourseuP——thedesignpressure,inP.——thetestpressure,inkPa[σ]a——theallowabledesignstressofsteelplateorweldmetalunderopera[σ].——theallowabledesignstressofsteelplateorweldmetalunderhyp₁——maximumspecificgravityoft5.2.6Nocourses5.2.7Inadditiontotherequirementsspe3Whereattachmentsaremaverticalweldor150mmofahorizontalweld.Padplatesandreinforcingplatesshcircumferentialcompressiveandaxial(5.2.8Thedesignofintermediate1Thetransformedshellmethoshellswithvaryingshellthickness.Theequivalentheight(spacing)betweenthestiffenersmWhere:t——theasorderedthtmin——theasorderedthickneh——theheightofeachc2Eachintermediatehorizontalringstiffenershallbedesignedtotakeintoaccountththeshellconsideredtocontributetothestiffnessofthatring.3Thedesignsoftheshellbottomcornerandthetowiththerequirementsforendstiffenersorbulk(longitudinal)compressivestresses.Texternalwindpressureandvacuum(internalnegativep5.3.1Designoftankcenterbottom5.3.2Theminimumshellplatethicknes5.3.3Forinternalpressure,theshellplatethicknessshallbecalcC₁——thenegativethicknessdeviationofsteelplaP——thecalculatedinternalpressure,i.e.thecombinationofinternalgaspressureand5.3.4Designoftheoutershellwithintermediateringstiffenersscombinationwithcircumferential5.3.5Theshellshallbeabletoresista2)Liveloads(rooflive,snow);2Circumferentia5.3.6Theamountofdesignload(action)bysuctiononroofandoverturnconsideredinthecalculati5.3.7Stiffenersplicesshallbeweldedtogetherwithfullpenusedatstiffenerbuttwe5.3.9Theminimumroofplatethicknessshallbe5mm(excludingco5.3.10Forroofplateswithsupportingstructure,theweldsshallbeselecte4Iflapweldsareused,lapweldedroofplatesshall5.3.11TheroofsupportingstructurestructuresJGJ2Roofplateswithsupportingstructureshallbeofbutt-weldedordoublelafollowingformulasshallbeusedtocalculatetheroofplatethicknest,——theroofplatethickness(excludingcorrosionallowance)inmm;P——theinternalpressurelesstheweightofthecorrodedroofshR₁——theradiusofcurvatureofroof,inm;φ——theweldjointeffici5.3.13Withoutconsiderationofcorrosionallowance,tdeterminedbythefollowingequation.Theeffesections,wherethemaximumwidthshallmeettherequirement(Figure5.3.13).(a)Withoutcornerring(b)WithcFigure5.3.13Typicalshell-roofcompressionareast-thethicknessofshell,inmm(excludingcorL₁-thethicknessoftopcornerring,inmm;tg-thethicknessofthehorizonttp-thethicknessofroofplateatcompressionring,inmm(excludingcorrosionL-theeffectiverooflength,inmm;L-theeffectiveshellR-theradiusoftankshell,inm;R₁-theradiusofcurvatureofroof,inmWhere:A——theminimumcP——theinternalpressurelesstheweightofthecorrodedroofsheets,inkPa;R——theradiusofthesheθ——theslopeoftheroofmeridianatroof-shellconnection,indegrees.5.3.14Whereatopcornerringisused,the5.3.15Singlelapweldedroofplatesshallnotbeincludedinthecompressioroofplatesmaybeincludedinthecompress1Thehorizontalprojectionoftheeffectivecompressionareahasaradialwi1.5%ofthehorizontalradiusofwithinaverticaldistanceequalto1.5timestheaveragethicorner,aboveorbelowthehorizontalplanethroughthecorner.internalnegativepressure).4Careshouldbetakentoavoidexbetweentheroofsupportingmember5.4.1Asuspen5.4.2Thedesignloadofsuspendedroofshallatleastincludetheself-weightofsuspen5.4.4Thedesignofventilationopeningsofthesuspendedroofshallbdifferencebetweenthespacebelowandabovethesuspsuspendedroofsothat5.5.1PipeconnectionstotheprimaryorsecondaspecificationsofArticle3.2.7ofthiscode.5.5.2Nozzlesshallbede5.5.3Whenthenominalberequired,andthenozzleconnectionandtheminwiththespecificationsofthecurrentnationalstandardCodefordesignofverticalcylindricalwe5.5.4Whenthenominaldiameterofshellnozzleislberequired,andthenozzleconnectionandtheminwiththespecificationsofcurrentnationalstandardCodefo5.5.5WherenozzlesareusedasnationalstandardCodefordesignofverticalcylindricalweldedsteeloiltanksGB503Fordesignpressuresequaltoorlowerthan6kPa,penetrationsthroughtheroofshallreinforcedandweldedinaccdesignofverticalcylindricalwelde5.5.8Whendesignpressuresaregreaterthan6kPa,penetrationsthroughtheroofandweldedasspecifiedforshe5.5.9Wheretheopeningintheroofiselldimensionoftheellipticalopening.5.5.10RoofnozzlesforcoldliquidorcoldvapourshallbeprovidedwiththermaldisFigure5.5.10).Figure5.5.10Typicalroofnozzlewiththermaldistancepiece4-Thermaldistancepiece(lowtemperature);5-Domeroof(ambient);6-Internalpipecoldi5.5.11Theflangesofallmountings,exceptshellandroofmanholes,shallbemadetohaveapratingnolessthan2.0MPtialsettlementofthetankfoundationshallbeinaccordancewiththespecifArticle3.2.9ofthiscode.5.6.2Thetankconstructionsha5.6.3Nozzleopeningshal5.6.4Thespacesurroundingthenozzleandp5.7ConnectionsBetweenPrim5.7.2Aheatinsulati5.7.3Flangedjointsshaccommodatethedifferentialmovementbetweentheroofs.Theconnectionspassingthroughthesuspendedroofshallbeabletoneithertheouterrooforthesuspendedroof.5.8.1Thefollowingsubjectsshallbec1Boththeinnerandtheoutert2Attentionshallbepaidtothe3Anchoragepointssha4Noinitialtensionshallbeapplie6Anchorageshallbedesignedtotakeaccountofbending7Anchorageshallbea8Acorrosion9ColdprotectionmeasuresshaArticle3.2.15ofthisCodeandAppendixBofthisCode.6.1.2Forconcretetanks,thelimitstatemethodbasedonprobabilitytheorreliabilityindexisusedtomeasurethereliabilityofthequationsareusedforstru6.1.3Whenultimatelimitstatemethodisusedtodesigntheconcreteofloadsorseismiccombinationsofloadsshouldbeusedforcalculation,andwhenserviceabillimitstatemethodisusedtodesignlong-termeffectsorcharacteristiccombinationsofloadsandltheminimumwallthicknessoftheconcretetankshallalsocomplywiththefollowingrequiremen1Thespacingshallbesufficientforthe2Ahomogeneous,lreinforcementandpre-stressingtendonsshallbesuff6.1.5Concretecovershallcomplywiththefollowing1Theconcretecoverselectioclassification,soilconditionsandemergencydesignconditionse.g.2Theminimumthicknessoftheconcretecoverofreinforcementshallbeinaccordancewiththe6.1.6Thepositionofpre-stressingsystemshallcomplywiththefollowingrequiremen1Forinternalpre-stressingsystemsusingbutt