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NJBSTCo.,Ltd.QCD-012Rev.:0Page:1of17Title:RADIOGRAPHICEXAMINATIONPROCEDUREFORBUTTWELDSRADIOGRAPHICEXAMINATIONPROCEDUREFORBUTTWELDS对接焊缝射线检测工艺规程CONTROLLED在控本□UNCONTROLLED非在控本□COPYNO副本编号：PREPAREDBY编制：DATE日期：REVIEWEDBY审核：DATE日期：APPROVEDBY批准：DATE日期：NJBSTCo.,Ltd.QCD-012Rev.:0Page:2of17Title:RADIOGRAPHICEXAMINATIONPROCEDUREFORBUTTWELDS1.General1.1Thisprocedureisappliedtothex-rayradiographicexaminationofbuttweldsforpressurevesselsconstructedinaccordancewithASMECodeSectionⅧDiv1.1.2Thisprocedureshallbesupplemented,whennecessary,withtheexaminationinstructionsdefiningmorespecificvariables,whichwillbepreparedbyNDELevelⅢpersonnel.2.QualificationofExaminationPersonnel2.1AnypersonengagedintheradiographicexaminationshallbequalifiedandcertifiedasaradiographicexaminerinaccordancewithNJBSTCo.,Ltd.’s“WrittenPracticeforNDEPersonnelTraining,Examination,QualificationandCertification”(NO.:QCD-011).2.2TheNDELevelⅠshallreceivethenecessaryinstructionorsupervisionfromacertifiedNDELevelⅡorLevelⅢExaminer.TheNDELevelⅡshallreceivetheinstructionorsupervisionfromaNDELevelⅢExaminer.2.3Accordingtotherespectiveresponsibilityrange,allexaminersshallcompletetheexaminationconformingtothereferencingASMECodeSections,standardsandwritteninstructions.Theyshallassuretheworkingquality.3.Equipment,ToolsandMaterialsTheLevelⅡExaminershallselecttheequipment,toolsandmaterialstoassurethattheyareincompliancewiththefollowingconditionsandtherequirementoftheexaminationinstruction.3.1Oneofthex-rayequipmentshallbeselectedfromTable1.Table11.概述1.1本工艺规程适用于按ASME规范第Ⅷ卷第Ⅰ册要求制造的压力容器的对接焊缝的x射线照相检测。1.2必要时，本工艺规程应由探伤作业指导书进行补充以规定更详细的变量，此指导书由NDEⅢ级人员编制。2.检测人员资格2.1从事射线探伤的检测人员必须按南京宝色钛业有限公司的NDE人员培训、考试、资格鉴定和认证实施细则(文件号：QCD-011)进行资格考核评定。2.2NDEⅠ级须接受合格的Ⅱ级或Ⅲ级必要的指导或监督。NDEⅡ级须接受NDEⅢ级的指导或监督。2.3根据各自的职责范围，所有检测人员应按ASME规范有关卷，标准和作业指导书进行检测并保证工作质量。3.设备、器材Ⅱ级人员所选用的设备、器材应能保证符合下列条件和探伤作业指导书的要求。3.1X射线设备应从表1中选用。TypeMfr.Max.TubeVoltabe(KVp)Max.TubeCurrent(mA)Foc.Size(mm)Permittedmax.materialthick(mm)SteelTiZrxx-2505Beijing25052x2386322xx-3005Dandong30051.0x2.3467028表1类型制造厂家最大管电压KVp最大管电流mA焦点尺寸(mm)允许的材料最大穿透厚度mmSteelTiZrxx-2505北京25052x2386322xx-3005丹东30051.0x2.34670283.2FilmFilmselectionshallbeinaccordancewithSE-1815,StandardTestMethodforFilmSystemsfor3.2胶片胶片须根据SE-1815工业射线照相的胶片系统分类的标准测试方法来选择。胶片分类表应由胶片制造厂提供。胶片NJBSTCo.,Ltd.QCD-012Rev.:0Page:3of17Title:RADIOGRAPHICEXAMINATIONPROCEDUREFORBUTTWELDSIndustrialRadiography.Theclassificationtableoffilmshallbeprovidedbythefilmmanufacturer.FilmsystemclassesSpecial,Ⅰ,Ⅱ,Ⅲ,W-A,andW-Barepermitted.Dependingonthex-raypenetrationthickness,asuitablefilmshallbeselected.Whenusingtwofilmsmethod,twodifferenttypesoffilmshallbeselected.3.3ScreenAsuitableleadscreenshallbeselectedfromTable2.Table2系统分为特殊、Ⅰ,Ⅱ,Ⅲ,W-A,和W-B。应根据X射线穿透厚度，选择合适的胶片。采用双片法时，应选用两种不同类型的胶片。3.3增感屏从表2中选择适当的铅增感屏。表2TubeVoltageThicknessofleadScreen(mm)管电压铅增感屏厚度(mm)FrontBack前屏后屏150kv150kv~300kv0.01~0.030.025~0.100.050.05~0.10150kv150~300kv0.01~0.030.025~0.100.050.05~0.13.4DensitometerandStepWedgeFilmThedigitaldensitometerlistedinTable3shallbeusedforjudgingradiographdensity.Thedensitometershallbecheckedagainstacalibratedstepwedgefilmatleastonceevery90daysbytheNDELevelⅡorⅢExaminer.Thestepwedgefilmshallbecalibratedonceevery12monthsbytheNationalBureauofStandards.Table33.4黑度计和阶梯黑度片用表3列出的数码黑度计测定射线底片密度。黑度计至少每90天由NDEⅡ级或Ⅲ级用校验过的阶梯黑度片校验一次。黑度片须至少每12个月由国家标准局校验一次。表3TypeManufacturerMea.,RangeMea.,Precision型号制造厂测量范围测量精度TD-210ZHEJIANGZHENGHAI0.00-4.00D±0.03DTD-210浙江瓯海0.00-4.00D±0.03D3.5ImageQualityIndication(IQI)3.5.1TypeandmaterialofIQIs3.5.1.1ThewiretypeIQIpresentedasFig.1andTab.4beused.ThewiretypeIQIshallbemanufacturedandidentifiedinaccordancewiththerequirementsinSE-747.3.5.1.2Thewiresshallbefabricatedfrommaterialoralloywithsameorlessradiationabsorptionthanthematerialbeingradiographed.3.5象质计(IQI)3.5.1象质计类型和材料3.5.1.1应使用线型象质计(图1和表4)。线型象质计的制造和标识应符合SE-747的要求。3.5.1.2金属丝的材质应与被透检材料相同，或其射线吸收小于被检材料。NJBSTCo.,Ltd.QCD-012Rev.:0Page:4of17Title:RADIOGRAPHICEXAMINATIONPROCEDUREFORBUTTWELDSFig1图11B11ASTMSETIDENTIFICATIONLETTERMATERIALGROUPNUMBER组别标码材质标码LARGESTWIRENUMBER最粗丝号NJBSTCo.,Ltd.QCD-012Rev.:0Page:5of17Title:RADIOGRAPHICEXAMINATIONPROCEDUREFORBUTTWELDSTable4WireIQIDesignation,WireDiametersandWireIdentityin.(mm)Table4IQISetsandwireDiameter表4线型IQI标识和线径表4象质计组别和线径WireDiametersin.(mm)线径英寸(毫米)SetAWireNo.SetBWireNo.A组线号AB组线号B0.0032(0.08)10.010(0.25)60.0032(0.08)10.010(0.25)60.004(0.1)20.013(0.33)70.004(0.1)20.013(0.33)70.005(0.13)30.016(0.4)80.005(0.13)30.016(0.4)80.0063(0.16)40.020(0.51)90.0063(0.16)40.020(0.51)90.008(0.2)50.025(0.64)100.008(0.2)50.025(0.64)100.010(0.25)60.032(0.81)110.010(0.25)60.032(0.81)11SetCWireNo.SetDWireNo.C组线号CD组线号D0.032(0.81)110.100(2.5)160.032(0.81)110.100(2.5)160.040(1.02)120.126(3.2)170.040(1.02)120.126(3.2)170.050(1.27)130.160(4.06)180.050(1.27)130.160(4.06)180.063(1.6)140.200(5.1)190.063(1.6)140.200(5.1)190.080(2.03)150.250(6.4)200.080(2.03)150.250(6.4)200.100(2.5)160.320(8)210.100(2.5)160.320(8)213.5.2IQISelection3.5.2.1ThedesignatedessentialminimumwirediametershallbeasspecifiedinTable5Table5IQISELECTION表5象质计选用3.5.2IQ