储罐制作作业指导书解读

1、CSPCNANHAIPETROCHEMICALSPROJECTCSPC南海石化项目FABRICATIONANDERECTIONOFTANKWORKINSTRUCTION储罐制作及安装作业指导书WORKINGINSTRUCTION：WI-8710-8100-0013cSEPCOElectricalPowerConstructionCorporation山东电力基本建设总公司REVDATEREASONFORISSUEBYCHKDREVIEWAPPRA22JUL2003IssueforReviewandapprovalWFLHJCHYDPS0024AUG2003Issueforimplementat

2、ionWFLHJCHYDPS0112SEP2003IssueforimplementationWFGHMZXLHJCSPCNanhaiPetrochemicalsProjectSEPCOElectricPowerConstructionCorpCSPCNanhaiPetrochemicalsProjectSEPCOElectricPowerConstructionCorpWI-8710-8100-0013cRev.01FABRICATIONANDERECTIONOFTANKWORKINSTRUCTION油罐及水箱的制作与安装作业指导书Page of36WI-8710-8100-0013cRev

3、.01FABRICATIONANDERECTIONOFTANKWORKINSTRUCTION油罐及水箱的制作与安装作业指导书Page of36目录TABLEOFCONTENTS1.0PURPOSE目的2.0SCOPE范围3.0RESPONSIBILITIES职责4.0PROJECTSUMMARIZATION工程概述5.0WRITINGREFERENCE编制依据6.0PRIMARYCONSTRUCTIONSCHEME主要施工方案7.0PROCESSFLOW工艺流程8.0ERECTIONPROCESSREQUIREMENT安装工序要求9.0TANKPREFABRICATION罐体预制10.0TAN

4、KERECTION罐体组装11.0ACCESSORYINSTALLATION附件安装12.0WELDANDWELDINGLINEINSPECTION焊接及焊缝检验13.0GEOMETRICDIMENSIONANDDIMENSIOMNINSPECTIONOFTANKS罐体的几何尺寸和尺寸检验14.0FILLINGTESTING充水试验15.0ANTICORROSIVEPAINTING防腐涂漆16.0CONSTRUCTIONACCEPTANCE工程验收17.0LABORFORCEPLAN劳动力计划18.0EQUIPMENTFORCONSTRUCTION施工机具使用计划19.0JSA工作安全分析AT

5、TACHMENT:CALCULATIONONHOISTINGVERTICALPOST附录：提升立柱计算说明书PURPOSE目的Toprovidespecificationandrequirementforoil/watertankfabricationinCSPCNanhaiPetrochemicalsProject,Steam&PowerPlantProject.Thisinstructioncanactasadirectioninmakinganderectingtankstoensuretheprojecttocompleteontimeandwithgoodquality.在于制订南海

6、石化汽电联产项目油罐、水箱制作的规范及要求，作为以后制作及安装的指导，确保工程高质量的按期完工。SCOPE范围Thisinstructioncompliestothefabricationanderectionofoil/watertanksinCSPCNanhaiPetrochemicalsProject,Steam&PowerPlantProject(exceptingforthermalinsulationandantisepsis).本指导书适用于南海石化汽电联产项目油罐、水箱的制作及安装(不包括保温、防腐)。RESPONSIBILITIES职责SEPCO2isresponsiblef

7、orthefabrication,erection,inspectionandtestingofoil/watertanks.山东电建二公司负责油罐、水箱的制作及安装、检验和试验。SEPCO1isresponsiblefortheexcavationfabrication,inspectionandtestingoftanksfoundation.山东电建一公司负责油罐、水箱基础开挖、制作、检验和试验。SEPCOisresponsiblefortheinterfacecoordinationandqualitycheckandacceptance.基建总公司负责接口协调和质量验收。PROJEC

8、TSUMMARIZATION工程概述PROJECTBRIEFINTRODUCTION工程简介8oiltanks,2desaltingtanksand2coagulatingtanksneedtobeerectedonsiteforCSPCNanhaiPetrochemicalsSteam&PowerProject.Themaximumcapacityoftanksis8350m3.Watertanksarenormalpressurecontainers,whichstructuralform2/2-isverticalcylindersteelweldeddomerooftank.Grade

9、ofsurfacefinishisSaInsideshellneedanepoxylining,whiletheoutsideistobepaintedforprotection;Oiltanksarelowpressurecontainers,whichstructuralformisverticalcylindersteelweldeddomerooftank.GradeofsurfacefinishisSa2于.Insideshellrequiresafirstcoat,whileoutsiderequiresthermalinsulationafterprimer,inter-coat

10、andtopcoat.南海石化汽电联产项目现场安装有储油罐8座、除盐水箱2座、凝结水箱2座，罐的最大容积为8350ms,其中水箱为常压容器，结构形式为立式圆筒钢制焊接储罐，顶部为拱顶，除锈等级为Sa2,2，罐壁内侧为环氧树脂衬里，外侧涂漆防护；油罐为低压容器，结构型式为立式圆筒钢制焊接储罐，顶部为拱顶，除锈等级为Sa212，罐壁内侧为一遍底漆，外侧涂底、中、面漆后保温防护。4.2PROJECTITEMS工程项目PROJECTITEMSSCHEDULE工程项目一览表序号ITEM名称NAME代号CODE规格SIZE（直径*高度）DIA.*HEIGHT容积CUBAGE（m3）重量WEIGHT(kg)

11、数量QUA罐顶形式ROOFFORM1储油罐OILTANKT8691Q20*206283126,5001带肋拱顶DOMEWITHRIB2储油罐OILTANKT8682Q22.5*218350192,0001带肋拱顶DOMEWITHRIB3储油罐OILTANKT8681Q22.5*218350192,0001带肋拱顶DOMEWITHRIB4储油罐OILTANKT8683Q22.5*218350192,0001带肋拱顶DOMEWITHRIB5储油罐OILTANKT8662Q20*206283158,0001带肋拱顶DOMEWITHRIB6储油罐OILTANKT8661Q20*206283158,00

12、01带肋拱顶DOMEWITHRIB7储油罐OILTANKT8671Q17.5*14336770,0001带肋拱顶DOMEWITHRIB8储油罐OILTANKT8651Q10*13102131,7001带肋拱顶DOMEWITHRIB9除盐水箱DESALTINGTANKT8441AQ21.2*12.24084113,0001带肋拱顶DOMEWITHRIB10除盐水箱DESALTINGTANKT8441BQ21.2*12.24084113,0001带肋拱顶DOMEWITHRIB11凝结水箱COAGULATINGTANKT8471Q16*12.2230969,0001带肋拱顶DOMEWITHRIB12

13、凝结水箱COAGULATINGTANKT8481Q22.7*14.65655137,0001带肋拱顶DOMEWITHRIBButtjoint(fullymelt)willbeadoptedforannularplatesandlapjointforbottomcenterplates;buttjoint(weldinglinefullymelt)beadoptedforshellplates,andlapjointfortankroof,buttjointforeveryplatepart.Roofformisdomeroofwithrib.罐底板边缘板采用对接接头（全部熔透），中幅板采取搭接

14、接头；罐壁板采用对接接头（全熔透焊缝）；罐顶板采取搭接接头,每一等分板间采用对接接头。罐顶的结构形式全为带肋拱顶。Thereeling,sandblasting,paintingofsteelplatesshallbefinishedinworkshop.Erection,includingprocessofassembly,weld,inspection,testing,thermalinsulationandantisepsis,willbedoneatjobsiteerectinglocation.钢板的卷制、喷砂、涂漆在车间完成。储罐在现场的安装位置进行安装，现场安装包括组对、焊接、检

15、验、试验、保温、防腐等工序。编制依据WRITINGREFERENCEaConstructiondrawingsandrelateddocument施工图纸及相关文件bGBJ128-90Construction,CheckandAcceptanceSpecificationofVerticalCylinderSteelWeldedOilTankGBJ128-90立式圆筒形钢制焊接油罐施工和验收规范DEP34.51.01.31-CSPCStandardVerticalTanks-Selection,DesignandFabricationDEP34.51.01.31-CSPC标准立式油罐-选择、设

16、计和制作DEP30.48.00.31-CSPCPaintingandCoatingofNewEquipmentDEP30.48.00.31-CSPC新施工项目的涂漆和覆层DEP64.51.01.31-CSPCStandardVerticalTanksFieldErectionandTestingDEP64.51.01.31-CSPC标准立式油罐-安装和实验DEP1-CSPCSystem&FacilityFireProtectionDEP1-CSPC系统和设备的防火保护DEP0-CSPCGlassLinerofFacilityandPi

17、pingDEP0-CSP设备和管道的玻璃衬里ConstructionQualityInspectionPlanQC-8420-8600-0001施工质量检验计划QC-8420-8600-0001PRIMARYCONSTRUCTIONSCHEME主要施工方案Constructionscheme:Accordingtotheconstructioncharacteristicsandfieldenvironmentalrequirement,shellplatesandbracesofoil/watertanksshallbeprefabricatedintheplantoff

18、sitebeforetheirassembly（i.e.bending,derustingbysandblastingandpaintingofshellplatesandbraces.）first,thenbetransportedtojobsiteforassembly.Reverseassemblymethodisadopted,thatistosay,tankwillbeassembledfromroofdownwardtobottom.Theerectionsequenceis:tankbottom,roofsheeting,tank,facilities,facilitiesout

19、sidethetank,andatlastrailingplatform.Theassemblyshallbedonewith25Thydraulictrackcrane,andchainfallshallbeadoptedforerection.Scaffoldsshallbebuiltbothinsideandoutsideoftankforerectionprocess.施工方案：根据油罐、水箱的施工特点和现场环保需要，此油罐、水箱的壁板及支撑组装前，在安装现场外的工厂内先进行预制（即壁板及支撑的折弯、喷钢砂除锈及油漆），再运输到安装现场进行组装，组装时采用倒装法，也就是自罐顶到底板的装

20、配、制造顺序；安装顺序为：罐底、顶板、筒体、设备、外壳外部设备、栏杆平台；组装采用25t汽车吊，安装采用倒链提升；安装时罐内外搭设脚手架.Erectionplatform:Bottomplatesofoil/watertanksactastemporaryworkplatformforshellplatesassembly.组装场地：油罐及水箱底板作为临时平台，用作壁板组装。PROCESSFLOW工艺流程Processflowchartofoil-tankfabricationanderection:油罐制作安装工艺流程图：Workshopprefabricationprocessflowch

21、art:车间预制的工艺流程图：DrawingsjointcheckupReceivedmaterialinspectionConstructiontechnologydeliverlayingoffandgrooveprocessReelingSandBlastingPaintingandNumberingTransportedtojobsite图纸会审进厂检验施工技术交底下料及坡口加工卷板喷砂涂漆并编号运输到现场Jobsiteerectionprocessflowchart:现场安装流程图：constructionpreparationacceptanceoffoundationlaying

22、bottomplatesweldofbottomcenterplatesassemblyandweldoftopplateassemblyandweldofcurbangleassemblyoftemporarycolumnfordomeroofassemblyandweldofroofplatesassemblyandweldofribsforrooferectionofhoistingverticalcolumnhoistingshellplatesassemblyandweldofthesubsequentcoursefinishedweldinspectionfilletweldshe

23、llplatestobottomplatesweldshellplatestoannularplatesvacuumsideleakingofseamsonthebottomplatesacceptanceofgeometricdimensionerectionoffittingserectionofstairplatformfillingwatertestinganticorrosionandthermalinsulationacceptanceofthefinishedconstruction施工准备基础验收铺设底板中幅板焊接最上层壁板装配、焊接包边角钢组对、焊接临时拱顶支柱组装罐顶板装配

24、、焊接罐顶肋板装配、焊接提升立柱安装提升壁板装配、焊接下一层壁板依次提升组焊其他各层壁板罐壁焊缝检验最下层壁板和底板的角焊缝焊接中幅板与边缘板焊接底板焊缝真空测漏罐体几何尺寸验收附件安装梯子平台安装充水试验防腐、保温竣工验收&ERECTIINGPROCESSREQUIREMENT安装工序要求CONSTRUCTIONPREPARATION施工准备Drawingsshallbecheckedupbyrelatedpersonnel.Particularattentionshallbepaidtocheckingthegeneraldimensionandjunctionsdimensionofta

25、nks.Learntheusageandbasicworkingprincipleofoil/watertank.Makecleartechnicalstandard&requirementandprimaryconstructionworkloadaccordingtotheacceptancespecification.Intheeventanymisunderstandingormistakeonthedrawingsisdiscovered,theproblemshallbereportedandsolvedbeforeconstruction.熟悉图纸，组织有关人员进行图纸会审。重点

26、审核油罐及水箱的整体尺寸及连接点尺寸，弄清油罐及水箱用途及基本工作原理，并且对照验收规范，弄清技术标准及要求和主要工程量，图纸设计不清或错误，应及时反映，落实清楚后方可施工。Organizetherelatederectingpersonneltoprovidetechnologydelivery.Projectsummarization,timelimit,primaryconstructionworkload,primarytechnologyrequirements,constructionspecificationsandstandards,constructionprocessand

27、methods,theproblemstowhichparticularattentionshallbepaid,keypointsofthedrawingsandqualitycontrollingpointandsafetyprecautionsshallbeinterpreted.组织有关安装人员进行技术交底。交代工程概况、施工工期及主要工程量；交代主要技术要求和执行的规程规范及标准；交代施工顺序及施工方法，指出应注意的问题和有关处理方法；指出图纸中的关键之处，指出质量控制点；交代安全注意事项等。Compiletoolingmaterialplanandstarttostock.编制工装

28、材料计划并备料Constructionequipment&toolsandfieldpreparation:施工机具、施工场地准备：a.Receivedliftingfacilityinspectionbeforeenteringsite.起重设备进厂检查。bToolsroom,oxygenethyneroomandelectricweldmachineswitchboarddistribution.现场工具室、氧气乙炔房及电焊机配电盘布置。Manualelectricweldmachineandotherfacilitiesarrangementpreparation.电焊机等其它设备工器具

29、准备布置。Depositarydistributionformaterials,wastesandfinishedproducts.原材料、废料及成品堆放场地布置。Employeetemporaryrestroom,electrodesroomanddryingroomdistribution.职工临时休息室、焊条库及烘干室布置。Others.其它Preparationfortools,instruments,auxiliaryfacilitiesandsafetyprotectingequipment:Toolsandinstrumentsofalltypesshallcomplywitht

30、heconstruction&safetyrequirementandgaugesshallbeinspectedforacceptance.Allofthesafetyfacilitiesandequipmentshallcomplywithappropriatespecifications.工器具量具辅助设施安全防护用品等的准备：各种工器具符合施工及安全要求；各种量具经检验合格；安全设施及安全用品符合安全规定。Designandfabricationoftoolingsystem工装设计制作Designandfabricationofspecialequipmentforhoistingt

31、ankwalls筒壁提升专用工具设计制作。Designandfabricationofspecialsupportforshellplatesarrangement壁板放置专用支架设计制作。Designandfabricationofspecialtoolingsystemforsettlingtankwallsreinforcingringsintoplace筒壁加强环就位专用工装设计制作。Materialsinspectionbeforeenteringthefactory材料入场检验Carbonsteelplatesandsectionsshallconformtotheaccepted

32、standardsofthecountriesinwhichthetanksaretobefabricatedorthesteelistoberolled.碳钢板和附件应符合储罐的制作和钢板卷制的国家验收标准。Thesteelshallcontainnotmorethan0.23%carbon,0.05%sulphurand0.05%phosphorus.钢材中各成分含量CW0.23%,SW0.05%,PW0.05%。Thesteelshallhaveaguaranteedminimumultimatetensilestrengthofatleast363N/mm2andamaximumult

33、imatetensilestrengthofnotmorethan510N/mm2.Thesteelshallhaveaguaranteedyieldstrengthofatleast206N/mm2.Thesteelshallhaveanelongationnotlessthan22%.钢材应保证最小极限抗拉强度至少为363N/mm2且最大极限抗拉强度不超过510N/mm2，屈服强度至少为206N/mm2，不小于22%的延展性。Tankshellplatesandbottomannularplatesshalldisplayadequatenotchtoughness,asshownbelo

34、w:储罐的壳体板和底部环型板应有足够的切口韧性,表示如下：Platethickness板厚（mm）Ultimatetensilestrength极限抗拉强度（N/mm2）MinimumCharpy-Vvalue（J）最小却贝V型切口值（J）Testtemperature（C）实验温度（C）W12.5IMPACTTESTSNOTREQUIRED无要求冲击实验12.5W43027+2012.543041-5Mechanicaltesting机械测试Mechanicaltestingisnotrequiredforroofandbottomplatesforwhichthethicknessisde

35、terminedforpracticalreasonsandnotbystressconsiderations.由于顶部和底部板的厚度由实践理论确定且不考虑压力,因此力学实验对顶部和底部板不要求。Forshellplatesandforthebottomannularplates,testsshallbemadeonspecimenstakenfromeachplatethicknesswithafrequencyofonetestper25000kgofsteelorpartthereof.对于壳体板和底部环型板，用每2500Okg的钢材做一个实验的频率对每一个厚度的板进行抽样实验。Mill

36、certificatesshallshowallthepropertiesofmaterialsguaranteedbyitsspecificationandanyadditionalrequirements.工厂证明书表明了通过规范及一些附加要求而保证的材料的所有特性。StructuralboltsshallcomplywithGB123,grade8.8.结构螺栓遵从GB123,8.8级罐体预制TANKPREFABRICATIONTEMPLETPREFABRICATION样板预制Thelengthofarctempletshallbemorethan2.5m.弧形样板长度应大于2.5m。O

37、nestraighttempletshallbeusedtotesttheconvexandconcavecurvatureoftankbottomandwall,withlengthnolessthan1m.直线样板一个：用于检查罐底和罐壁的凸凹度,其长度不小于1米。Templetshallbemadeof6=0.75mmgalvanizedsheetiron.样板用6=0.75mm镀锌铁皮制成。TANKSBOTTOMPLATEPREFABRICATION罐底板预制Alignmentdrawingsshallbemadeaccordingtothedesignrequirementsanda

38、ctualspecificationsofsteelplatesbeforebottomplateprefabrication.Diameteroftheplateshouldbeamplifiedby0.1%0.2%ofdesigneddiameterinordertocompensateweldshrinkofbottomplate.(Conecurvatureofbottomplatehasbeentakenintoconsideration).底板预制前应根据设计要求及实际钢板规格绘制排板图,排板直径宜按设计直径放大0.1%0.2%,以补偿底板的焊接收缩(此已考虑了底板的锥度)。Acc

39、ordingtothealignmentdrawings,asemiautomaticcuttingmachineshallbeusedforcuttingplates.Thecuttingmachinecanalsobeusedtomakegrooveinarcannularplates.按照排版图,用半自动切割机进行下料,对于弓形边缘板应用半自动切割机打坡口。Afterfinishedcuttingplates,hoistthebottomplateontoanabrasiveconveyerbeltforremovingrust.将下好的底板,吊至抛丸机传送带上,进入抛丸机抛丸除锈。Bl

40、owawaydustandironpowderonsteelplatesafterbeingprocessedinanabrasivebyusinganair-compressor.利用空压机压力风,吹净抛丸后钢板上的尘土及铁粉。Tankbottomshallbespraypaintedwithzinc-richepoxyprimerbyusingtheairlesssprayequipment.Dryfilmthicknessshallbe25um.利用无气喷吐机对罐底喷底漆,底漆为环氧富锌底漆,干膜厚度为25um。Checkofdryfilmthicknessshallcomplywith

41、GB50205-2001CODEFORACCEPTANCEOFCONSTRUCTIONQUALITYOFSTEELSTRUCTURES.Dryfilmthicknessshallbecheckedwithdryfilmthicknessmeter.Eachcomponentforexamining5places,everywhereis3averagevalueofdryfilmthicknessformutuallybeingapartfrom50mmmeasuringpoints.干膜厚度的测量遵循GB50205-2001钢结构工程施工质量验收规范。利用干膜测厚仪检查油漆干膜厚度。每个构件

42、检测5处，每处的数值为3个相距50mm测点涂层干漆厚度的平均值。Paintingshallnotbepermittedintheareaof50mmaroundtheweldinglineonbottomplate.底板的现场焊接焊缝周围50mm范围内不允许刷漆。Bottomplateswillbenumberedaccordingtoalignmentdrawingsafterpainthasbeendriedadequately.Numberingmethodisasfollowing:Tanknumberpluserectionsequencenumber.待油漆充分干燥后，按照排版图对

43、底板进行编号，具体编号方式如下：储罐编号+安装序号Bottomplatesshallbepiledupandtransportedaccordingtoerectionsequenceafteritsnumbering.编号完毕后，按照安装顺序摆放、运输。Inequableclearancesshallbeadoptedforbuttjointsinarchedannularplates.Outboardclearanceshallbe6-7mmwhileinboardclearanceshallbe8-12mm.弓形边缘板的对接接头，宜采用不等间隙。外侧间隙宜为67mm；内侧间隙宜为812m

44、m。Widthofbottomcenterplateshallnotbelessthan1000mmandlengthshallnotbelessthan2000mm.中幅板的宽度不得小于1000mm；长度不得小于2000mm；Distancebetweenanytwoadjacentweldinglinesinbottomplatesshallnotbelessthan200mm.底板任意相邻焊缝之间的距离，不得小于200mm。Deviationofdimensiontoleranceofarchedannularplatesshallbeinaccordancewithrequiremen

45、tsinthefollowingform:弓形边缘板的尺寸公差允许偏差，应符合下表的规定。弓形边缘板尺寸允许公差PERMITTEDTOLERANCEOFARCANNULARPLATESDIMENSION测量部位measuredpoints允许偏差（mm）toleraneeheightAB、CD长度widthAC、BD、EF宽度differeneeofdiagonalsIAD-BCI对角线之差22W3.一E1弓形边缘板尺寸测量部位INSPECTIONLOCATIONOFARCANNULARPLATESCSPCNanhaiPetrochemicalsProjectSEPCOElectricPowe

46、rConstructionCorpCSPCNanhaiPetrochemicalsProjectSEPCOElectricPowerConstructionCorpCSPCNanhaiPetrochemicalsProjectSEPCOElectricPowerConstructionCorpWI-8710-8100-0013cRev.01FABRICATIONANDERECTIONOFTANKWORKINSTRUCTION油罐及水箱的制作与安装作业指导书Page of36WI-8710-8100-0013cRev.01FABRICATIONANDERECTIONOFTANKWORKINSTR

47、UCTION油罐及水箱的制作与安装作业指导书Page of36WI-8710-8100-0013cRev.01FABRICATIONANDERECTIONOFTANKWORKINSTRUCTION油罐及水箱的制作与安装作业指导书Page of36SHELLPLATESPREFABRICATION壁板预制ShellplatesalignmentdrawingshallbemadeaccordingtothedesigneddimensionandGB128beforetheircuttingprefabrication.壁板在切割预制前，应按设计图纸尺寸及GB128进行排版。Allsteelpl

48、atesshallberecordedandtabbedaccordingtoarrangementandparts;allplatesshallbepiledupin-orderforeasyerection.所有钢板下料时应按层次，部位做好记录并标号，堆放时应按安装顺序放之，以便安装就位。Lineoutfigureonsteelplatesaccordingtoalignmentdrawingstomaketheirdimension(diagonal,lengthetc.)tocomplywithrequirements.Makegroovewithasemiautomaticcutte

49、raftertheplateshavebeencheckedup.按照排版图，在钢板放样划线，使其对角线及长宽等尺寸符合规范要求，校验合格后用半自动切割机下料打坡口。Rollsteelplateswitharollingmachineandtheradianshallbecheckedreferringtoanarctemplettomakesureitcanmeetrequirementsindrawings.利用卷扳机卷板，弧度利用弧形样板检查，使其符合图纸要求。Straightedgeofthickplatesshallbecutwithasemiautomaticcutterafter

50、rolling.Andgrooveshallbemademanually.较厚壁板卷制后，其直边部分，用自动切割机割除，并用手工打坡口。Grooveofthinplatesshallbemadewithasemiautomaticcutterbeforereeling.Andthentheplateswillbeprocessedonareelingmachinetobendtheiredgestoarequiredradianbyusinganarctemplet.较薄壁板，卷制前先用半自动切割机打坡口，然后在卷板机上利用弧形模板，将钢板两端卷成所需弧度。Havingbeenrolled,t

51、heplateswillbeliftedontoanabratorconveyerbeltforremovingrust.将卷制好的壁板，吊至抛丸机传送带上，进入抛丸机抛丸除锈。Blowawaydustandironpowderonsteelplatesafterbeingprocessedinanabrasivebyusinganair-compressor.利用空压机压力风，吹净抛丸后钢板上的尘土及铁粉。Shellplatesshallbespraypaintedwithprimerbyusingtheairlesssprayequipment.Afterdryfilmthicknesso

52、fprimercoatreachesto75um,inner-coatwillbeaddedtoathicknessof75umafteritisdry.利用无气喷吐机喷底漆，待底漆干燥且干膜厚度达到75um后，再喷中间漆，并使中间漆干燥后，干膜厚度达到75um。Dryfilmthicknessshallbecheckedwithdryfilmthicknessmeter.Eachcomponentforexamining5places,everywhereis3averagevalueofdryfilmthicknessformutuallybeingapartfrom50mmmeasuri

53、ngpoints.利用干膜测厚仪检查油漆干膜厚度。每个构件检测5处，每处的数值为3个相距50mm测点涂层干漆厚度的平均值。Paintingshallnotbepermittedintheareaof50mmaroundtheweldinglineonshellplate.壁板的现场焊接焊缝周围50mm范围内不允许刷漆。Shellplateswillbenumberedaccordingtoalignmentdrawingsafterpainthasbeendriedadequately.Numberingmethodisasfollowing:Tanknumberplusshellcourse

54、numberplusringerectionsequencenumber.待油漆充分干燥后，按照排版图对壁板进行编号，具体编号方式如下：储罐编号+壁板层编号+环向安装序号Shellplatesshallbepiledupandtransportedaccordingtoerectionsequenceandshallbeputonspecialmoldinsealedvehiclesduringtransportationtomakethemfirmandreliable.编号完毕后，按照安装顺序摆放、运输，壁板运输时，放置专用mold上，然后封车，使其牢固可靠。Alllongitudinal

55、weldinglineineveryringofplatesshallbeinthesamedirectionandthedistancebetweenthemshallbe1/3ofthelengthofplateandnolessthan500mm.各圈壁板的纵向焊缝宜向同一方向错开，其间距宜为板长的1/3,且不得小于500mm。Distancebetweenlongitudinalweldinglineinbottomringandbuttjointweldinglineinannularplateshallnotbelessthan200mm.底圈壁板的纵向焊缝与罐底边缘板对接焊缝之间

56、的距离，不得小于200mm。Distancebetweenshellnozzleorreinforceplatesedgeofnozzleandlongitudinalweldinglineinshellplateshallbenoless200mm;andbetweenshellnozzleorreinforceplatesedge,andtransverseweldinglineshallnotbelessthan100mm.壁板开孔接管或开孔接管补强板外缘与壁板纵向焊缝之间的距离，不得小于200mm；与环向焊缝之间的距离，不得小于100mm。Distancebetweenbuttjoin

57、tofcurbangleandlongitudinalweldinglineinshellplateshallnotbelessthan200mm.包边角钢对接接头与壁板纵向焊缝之间的距离，不得小于200mm；Toleranceofshellplatesdimensionshallbeinaccordancewithrequirementsinthefollowingform:壁板尺寸的允许偏差，应符合下表的规定：壁板尺寸允许偏差TOLERANCEOFSHELLPLATESDIMENSION测量部位measuredpoints环缝对接(mm)buttiointofcircle环缝搭接lapjo

58、intofcircle(mm)length板长AB三10m(CD)length板长AB(CD)190.1t3.0水平对接焊缝CompletedhorizontaljiontsW8（上层壁板厚度upperplate）0.2t1.58（上层壁板厚度upperplate）0.2t3.0Ananti-distortionboardshallbetackedper2000mmalonginsideofthehorizontalseamandper500mmfromthetopdownalonginsideofverticalseamtoavoidseamdistortionbecauseofweldin

59、g.环缝组对时，应在内侧每2000mm左右点焊防变形板，以防止环缝的焊接变形。纵缝内侧自上而下，每500mm左右点焊防变形板。GeometricdimensionandweldsqualityofshellplatesshallbeinspectedaccordingtodesignrequirementsandDEP64.51.01.31-CSPCaftereverycourseofverticalandhorizontalseamhasbeenwelded.每层纵缝和环缝焊完后，应按设计要求和DEP64.51.01.31-CSPC对壁板的几何尺寸和焊缝质量进行检验。Expansionrin

60、gshallbeputdowntoconnectwiththelasttierofshellplateafterverticalseamshavebeenweldedtoupperhorizontalseams.Doublebaffleswithheightof200mmshallbesetinsideandoutsideoftheerectionlines.Tankshallbeliftedfor150mmandpadplatesshallberemovedtomakeshellplatesintoplace.Distancebetweenverticalweldsofbottomcours