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.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1.2Thisprocedureshallbesupplemented,whennecessary,withtheexaminationinstructionsdefiningmorespecificvariables,whichwillbepreparedbyNDELevelⅢpersonnel.2.QualificationofExaminationPersonnel2.1AnypersonengagedintheradiographicexaminationshallbequalifiedandcertifiedasaradiographicexaminerinaccordancewithNJBSTCo.,Ltd.’s“WrittenPracticeforNDEPersonnelTraining,Examination,QualificationandCertification”(NO.:QCD-011).2.2TheNDELevelshallreceivethenecessaryinstructionorⅠsupervisionfromacertifiedNDELevelorLevelExaminer.TheⅡⅢNDELevelshallreceivetheinstructionorsupervisionfromaNDEⅡLevelExaminer.Ⅲ2.3Accordingtotherespectiveresponsibilityrange,allexaminersshallcompletetheexaminationconformingtothereferencingASMECodeSections,standardsandwritteninstructions.Theyshallassuretheworkingquality.3.Equipment,ToolsandMaterialsTheLevelⅡExaminershallselecttheequipment,toolsandmaterialstoassurethattheyareincompliancewiththefollowingconditionsandtherequirementoftheexaminationinstruction.3.1Oneofthex-rayequipmentshallbeselectedfromTable1.Table1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<>(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....
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