钻机模块程序版-py-rig pro qa012结构nde检验

10ADescriptionof版版本描编审批Oilfield IMPLEMENTATIONBRANCH油田建设渤海工程OilfieldConstructionBohaiEngineering（中国）番禺作业公司 isOCECproperty.Itcannotbecopiedortransmittedtothirdpartieswithoutprior本文件是油建公司 ，第使用拷贝Projectname项目名称番禺4-2/5-1钻机模块EPC总包项Type s文件类型程sidentificationNo.文件PY-RIG-PRO-QA-版本1title文件名结构NDE检验程ContractNumber合同号(合同号：PYPMT-Sheet页数48Company’sorotherentitiesNoCHANGERECORD版本记录 DESCRIPTIONOF版本 ISSUEFORINTERDISCIPLINECHECK供审 ISSUEFOR 供审 ISSUEFORAPPROVAL,INCLUDINGCOMPANY供公司批准,包括公司意见 FINAL 供发布使REVISIONTABLE变更REVISION版REVISION版REVISION版A01A01A011√√2√√3√√4√√5√√6√√7√√8√√9√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√一、NDTPlanFor二、 Examination三、MagneticParticleExamination一、NDTPLANFOR结构上的无损探伤计Extentofinspection检验范围(Percentoftotalweldlength)磁粉1)Bracetochordweld,allT,K,orYConnectionsbuttT<-T40 other4)FullpenetrationweldsonLaunchlegringstiffenersseafastening,longitudinalandtransversaltrussconnections,launchlugs,andallpadeyes.有进行适航固定的下水桩环加固5)Pilefieldgirth6)Filletwelds,anodeconnectionandfullpenetrationweldsatotherlocations.-7)Flangesplices,websplices,andflange 梁 梁-8)Girderwebtoflange9)Girder-Foreachweld,applicablespottestsshallbeevenlydistributedoverthatweld’sUltrasonicinspectionshallnotbeallowedwhereradiographicinspectionhasbeenspecifiedunlessspecificCompanyapprovalisobtained,inwriting,foreachcase.在各种情况下除非获得公司的批准否则不能在已指定要进行射线探伤的情况下实施超声Areassubjecttothroughthicknessstressesfromweldedconnections,shallbeultrasonicallyinspectedforlaminationspriortowelding.ThismaybewaivedbyCompanyforsteelshavingimprovedthroughthicknessproperties.InspectedweldsshallincludeendsasaminimumforpartiallyinspectedWhenapprovedinwritingbyCompany,onacasebycasebasis,dyepenetrateinspectionmaybesubstitutedformagneticparticleinspection,inareaswheremagneticparticleinspectionisimpossibleduetolackofaccess.当某些区域不能够被接触而进行磁粉探伤操作时在得到公司的批准后可以按照实际情况用渗透探伤操作替代磁粉探伤操作。Memberswithadiameterlessthan406mm,andtowhichnote(k)applies,shallbe10%Nodecansandothertubularsmadeofmaterialswithimprovedthroughthicknessproperties,suchasAPISPEC2H.BraceendAlltubularsnotfallingunder(i)or所有管件不能低于附注(i)(j)Thelongitudinalweldonsubmerged-arcweldedpipeshallbemagneticparticletestedforadistanceoffourinchesfromeachendofthepipe.Inspectionshallbedoneonboththeinnerandoutersurfacesofthepipe.应该在配管的和外部同时进行。WithpriorCompanyapproval,ultrasonicinspectionmaybesubstitutedforradiographicinspectionofwebsplices,flangesplices,flangeintersections,andpilesplicesmadeoffshoreattheinstallationsite.Whenanyportionofalongitudinalweldisrejected,100%ofsuchweldshallbeRadiographedand100%ofeachsucceedingweldshallbeRadiographed,untilthereisnorejectweldattwosuccessivelytestedjoints.当纵向焊缝的某部分被通过时，该焊缝应该进行100%的射线探伤，并且随后相连的焊缝同样需要进行100%的射线探伤，直至在随后进试的两个接头之间不会出现通过的焊缝二、ULTRSONICEXAMINATION超声波探伤程MODULE-FABRICATIONAND模块-GeneralRequirementsforEquipmentCalibrationandReferenceCalibrationforProductionTestingDefectAcceptanceAppendix-A:DeterminationofTransfer附录A：1.01.1Thisprocedurecoversthemethods,techniquesandacceptancestandardsforultrasonictestingofas-weldedsteelstructuralshapesandtubularstructuresintheprojectasfollows:TubularT-,Y-andK-connectionsinSteel钢结构物上的TY-K-Fabricatedtubularformajorbraceruns,chordsectionsbetweentubularconnections,andpilesplices.SimilarTee,Corner,andButtWeldsincriticalpartsoftheSteelStandard PY4-2/5-1-SPC-MDR-PI-0004（ AND:AWSCodeD1.1Section62006Edition)AWSD1.1规程，第六部分（2006版）APIRP2X:"UltrasonicExaminationofOffshoreStructureFabricationsand"GuidelinesforQualificationofUltrasonicTechnicians"APIRP2X:"海上结构件超声检测和磁粉检测推荐作法及无损检测资格指南nelnelperformingthistestingshallbequalified,byaLevelIIIcertifiedbyASNT,toLevelIIinaccordancewiththerequirementsofASNT mendedpractice,SNT-TC-1A(2006Edition),RelevantsectionsofCodeAWSD1-1.orshallbequalifiedbyCCS,toNDELevelⅡinaccordancewiththerequirementsofCCS.执行该检验的应该由ASNT三级认证资格、达到ASNT推荐作法的所规定的NDE二级程度、还有SNT-TC-1A（2006版）和AWSD1-1CCS认证，达CCSNDTⅡ级水平。3.0GeneralRequirementsforUltrasonicTheultrasonictestinstrumentshallbethepulse-echotype.itshallgenerate,receive,andpresentonaCRTscreenpulsesinthefrequencyrangefrom1to10MHZ.110MHZ。Theinstrumentshallprovideahorizontalsweepwithalinearitywithin1%ofthefullscreenrange.(APIRP2X)1%的水平扫描。(APIRPTheinstrumentshallhaveacalibratedGainControlelectricallyaccuratetowithin1dBoverarangeofnotlessthan60dB.Adjustmentsshallbepossibleinincrementsnolargerthan2dBstep.60dB1dB以内。步进2dB。ThedynamicrangeoftheinstrumentsCRTdisplayshallbesuchthatadifferenceof1dBofamplitudecanbeeasilydetectedontheCRT.Eachinstrument-transducercombinationshallbecapableofproducingaminimum3/4CRTverticalscaledeflectionfromanechoreceivedfromthe4-in.radiuscurvedsurfaceoftheIIWcalibrationblockwithaminimumof40dBamplificationinreserve.IIW4英寸的半径曲面接收到的回声3/4屏高的显示并保留最低40dB增益余量。StraightBeamStraightbeam(longitudinalwave)probesshallberoundinshapeandshallhaveanactiveareaofnotlessthan10mmdiameternormorethan25.41mmdiameter Thefrequencyshallbe2to424MHzProbesshallbecapableofresolvingthethreereflectionsfromthenotchintheIIWreferenceblock.ProbesofothersizesandfrequenciesmaybeusedprovidedtheyarequalifiedasdescribedinAWSD1.1-98CodeandapprovedbyCompany.AngleBeamTheoscillatingelementshallbeapproximaysquareorroundinshapewithdimensionswhichresultinanincludedbeamangleofapproximay15degreesat6dBlessthanthecenterlineum.Aprobewithatransducerelementinsizefrom8to12.7mminwidthandfrom912.7mminheightoperatingat2to4MHzshallbemostlyusedinaccordancewiththe mendations,AWSD1.1,Sec.6.8—12.7mm9—12.7mmAWSD1.1Theprobeshallproduceasoundbeaminthematerialbeingtestedwithin±2degreesofthefollowingproperangles:45,60and70degrees.Theactualangleshallbecheckedorverifiedduringcalibrationfortestingandreportedontheapplicabletestreport.探头应该能够在检验材料上发生声束不超过下列原定角度±2°范围：45°,60°和Eachprobeshallbeclearlymarkedtoindicatethefrequencyofthetransducer,nominalangleofreflectionandindexpoint.ProbesofothersizesandfrequenciesmaybeusedprovidedtheyarequalifiedasdescribedinAWSD1.1-98CodeandapprovedbyCompany.AWSD1.1-984.0RoutineCheckonthePerformanceofTheultrasonicinstrumentshallbecheckedperiodicallyforAmplitudeControlLinearity(dBAccuracy),TimeBaseLinearity(HorizontalLinearity)andumInternalReflectionsinaccordancewiththeapplicablecalibrationproceduresasoutlinedinEquipmentQualificationProcedures,ofAWSD1.1-2008关放大线性(dB精度),、时基线性(水平线性)FrequencyofchecksfortheHorizontalLinearityandInternalReflectionshallbecarriedoutbeforeuseandeveryforty(40)hoursusethereafter,andtheAmplitudeControlLinearity(dBAccuracy)shallbecheckedforcorrectcalibrationattwomonthintervals.40放大线性(dB精度)Allassessmentchecksshallbecarriedoutwithinstrumentsuppressionrejectcontrolsoff,oratZero.ThereportsoftheseassessmenttestsshallberecordedonCalibrationRecordAllInstrumentQualificationRecordsshallbereviewedandapprovedbyanNDELevelIIItechnicianorhisdesignatedauthorizedRepresentativebeforetheinstrumentispermittedtobeused:theRecordsshallbekeptintheNDE所有仪器鉴定记录应该在该仪器被容许投入使用之前由一个具有NDE三级资格的技术员或他指定的代表进行和核准；同时该记录应保存在NDE内。ResolutionResolutionofthecombinedelectronicinstrumentandprobeshallbeprovedonIIWstandardblocktodeterminewhetherreflectorsincloseproximitytoeachothercanbeindicatedclearlyandseparay.Thefollowingmethodshallbeused.IIWStraightBeamThestraightbeamprobeshallresolvethereflectorsatarangeof85mm(2mmslit),91mmand100mm(flatsurface)oftheIIWblock(IIW-A1).85mm(2mm切口),91mm100mm(平面)IIW(IIW-AngleBeamTheanglebeamprobeshallresolvethethreeholedistancestheRC-ResolutionBlockinAWSD1.1Code.AWSD1.1内指定的RC-5.0CalibrationandReferenceCalibrationThefollowingcalibrationblocksshallbeavailableIIW-V1CalibrationBlockA1block)IIW-V1校准试块(A1试块)IIW-V2CalibrationBlock(DIN54IIW-V2校准试块(DIN54AWSD1.1-2002RC-ResolutionReferenceBlockAWSD1.1-2002,RC-分辨试块ReferenceblocksaccordingtothespecifiedReferenceReferenceBlockThematerialfromwhichtheblockisfabricatedshallbeofthesameproductform,materialspecificationorequivalentP-Numbergrouasthematerialsbeingexamined.ReferenceblocksshallbemanufacturedasrequiredbythereferenceCodesection,orasstatedintheContractEngineeringStandard.Thefinishonthesurfacesoftheblockshallbenosmooththanthesurfacefinishofthecomponents.ReferenceLevelSensitivityReflectorandBlockReferencesStandardsforLevel"A"Examination.Calibrationblockshavea1/16-in.(1.6mm)side-drilledholewhichshallbereferencedtothe1/16-in.holeintheIIWstandardshallbeusedforestablishingqualityLevelAsensitivityaswellasqualityLevelC.SeeFigure1.Inadditiontotheside-drilledholesemployedforevaluationofalldiscontinuitiesinthebodyoftheweld,a1/16-in.(1.6mm)deepslot(squarenotch)issuggestedasreferencestandardtobeusedinevaluatingrootreflectorsinT-,K-,andY-connectionsweldedfromonesideonly.AIIW1/16英寸(1.6mm)横孔，同时IIW标准应该用于建立C级品质以外的A级灵敏度品质。请看图1.1/16-in.(1.6mm)规格的深槽（方型凹口）T-,K-,和Y-型单边焊缝根部反射体.ReferenceStandardsforLevelCExamination.C级检验的参考标准InadditiontotheIIWstandard(or1/16in.side-drilledhole),thefourreferencestandardreferredtoasBUTTRESS(Square)","V-45","V-60"and"V-70"andshallbemanufacturedfromtheactualproductionmaterialandfurtherdetailedinFigure2shallbeSuggestedcalibrationreflectorsshallbemachinedparalleltothecontactsurfaceofthebasiccalibrationblockorthecomponent.Figure1.ReferencesStandardforLevel"A"T="×Figure2.ReferencesStandardforLevel"C"Seeslotdetailsbelow(fourblocksToleranceangle-inches-±0.001-millimeters-±0.025公差–角度-英寸-±0.001-毫米-±0.025CalibrationforGeneralCalibrationforsensitivityandhorizontalsweeprangeshallbemadebytheultrasonictechnicianjustpriortoandatthelocationoftestingofeachweld.Forthispurpose,thereject(suppression)controlshallbeturnedoff.CalibrationforStraightBeamTestingCalibrationforstraightbeamtestingofbasemetalshallbemadewiththeprobeappliedtothebasemetalandperformedasfollows.SweepRangeThehorizontalsweepshallbeadjustedfordistancecalibrationtopresenttheequivalentofatleastthreeplatesthicknessontheCRTscreen.ReferenceSensitivityLevelThereferencelevelshallbeadjustedfromtheback-wallechoto80%screenCalibrationforAngleBeamTesting斜角超声波试验的调校CalibrationforanglebeamtestingshallbeperformedasfollowsSweepRangeSweeprangecalibrationShallincludeasaminimumtheentiresoundpathdistancetobeusedduringthespecifictestingbyusingtheIIWblock.IIWStandardSensitivityLevelStandardsensitivityfortestingofproductionweldsshallbetheBasicSensitivityLevelcorrectedfordistancebyaDistance-Amplitude-CorrectionCurveestablishedwiththeReferenceBlockandmodifiedbyTransferCorrection.建立并且经过传输修正程序修改的距离-波幅-BasicSensitivityLevelReferencelevelscreenheightshallbeobtainedusingumreflectionfrom1.6mmdiameterholeintheReferenceBlockasdescribedinparagraph5.2.2ofthisTheamplitudeshallbeadjustedto80%offullscreenheight.Inadditiontotheside-drilledholesemployedforevaluationofalldiscontinuitiesinthebodyoftheweld,1.6mmdeepsurfacenotch(Square)shallbeusedasreferencestandardtobeusedinevaluatingrootreflectorsinT-,Y-&K-connectionsweldedfromonesideonly..(规格的深槽（方型凹口）评定TK-,Y-DistanceAmplitudeCorrectionDAC)TheReferenceLevelshallbeadjustedtoprovideforattenuationlossthroughouttherangeofsoundpathtobeused,byDACcurve.TheASMEtypeDACblockshallbeusedandcurveswhichare100%and50%ofreferencecurvearetobeconstructed.Thereferencelevelshallbeadjustedtocompensateforthedifferencesinsurfacecharacterandattenuationbetweenthereferenceblockandthematerialbeingtested,bymeansofthedoubleprobetechniqueasdescribedinAppendix"A".Atransfercorrectionshallbeperformedandrecordedonceforeachweldedjointtobetestedusingpartofthetestsurfaceexhibitingtheroughestcondition,exceptforrepetitivetestingofthesamematerials,sizeandconfiguration,inwhichcaseatransfercorrectionshallbeperformedatthebeginningofeveryshiftbytheultrasonic在使用部分最粗糙探伤面进行试验的各个焊缝上进行的转移修正操作应该地进行和Itmayalsobeusedto modateultrasonictestingthroughtightlayersofpaintnotexceeding10mils(0.25mm)inthickness.(3)Calibrationsurfacesshallcloselymatchthatofthetestsurfacetominimizecorrectionsrequired.SurfaceThesurfacesofweldsandbasemetalshallbepreparedasContactsurfacesshallbefreeofweldspatterandanyconditionthatmightinterferewithfreemovementofthesearchunitorimpaircouplingofultrasoniccalibrationstoandfromthematerialexamined.接触面应该不带有焊接飞溅物和任何妨碍探测装置运动或削弱材料检验时超声波Tightlayersofpaintnotexceeding10mils(0.25mm)inthicknessmaybeleftonattheowner'sdescription.Whenthecorrectionfactorhasbeendeterminedandusedseepar.10mils(0.25mm)Finishedweldsurfacesshallbeadequatetopreventinterferencewithinterpretationoftheexamination.SurfacesofthecalibrationreferenceblocksshallbeofasimilarfinishtothepartunderCouplantThecouplantshallpreferablybeacellulosepasteandwatermixtureofsuitableconsistency;however,glycerinwithawettingagentmaybeused.ComponentsshallbetestedusingthesamecouplantasthatusedforsensitivityScanningScanningScanningshallbecarriedoutagainsettingof2to4times(6to12dB)moresensitivethantheReferenceLevel.EvaluationofindicationsshallbedonewiththecontrolsetattheReference24倍（6-12dB）的增益。同时探伤的显示评定StraightBeamAtthetimeoftestandpriortoanglebeamscanningoftheweld,theentirebasemetalthroughwhichsoundwillpassduringanglebeamtesting(determinedbyumsurfacedistancerequiredfromtheweldfortherequiredskipdistance)shallbescannedforlaminarreflectorsorinclusionswhiightinterferewiththeexamination.Ifanyarea.ofbasemetalexhibitstotallossofbackreflection,orifanindicationequaltoorgreaterthantheoriginalbackreflectionheightislocatedinapositionthatwillinterferewiththenormalweldscanningprocedure,itssize,location,anddepthfromthefaceshallbedeterminedandreportedseparaytoCompany.焊缝检验时，在使用角度探头扫描之前，角度探伤时超声波穿过的所有基础金属（Whereconditionsarefoundtointerferewithanglebeamtesting,theanglebeamtechniqueshallbemodifiedtoresultinumtestingofthespecifiedvolume.AngleBeamTechniqueandThetechnicianshallbegiventhefollowinginformationbeforeweldtestingiscommenced,andchoiceofangle(s)ofrefractionforscanningweldbodysidewallandreinforcementshalldependonthefollowingfactors:TypeofferricGroovetypeCharacteristicsandorientationofdefectslikelytooccuri.e.,theweldingprocessTypeofweldjointconfigurationtobetestedi.e.,theapplicablerangeofdiameter,thicknessandlocaldihedralangle.Accurateprofilesshallbetakenwithwiretypeprofilegauges(MIMICgauge)or,ifjointangleisacute,asuitablypliablematerialabletomaintainitsshapeundernormalScanningmaybeinanypatternwhichresultsinfullcoverageoftherootofthethebodyoftheweld,andbothsidefusionlinesandbasemetalheataffected扫查可以采用能完焊缝根部、焊缝本身、两边融合线和基础金属的热影响区任Scanningshallgenerallybeperformedatagainsetting12dBaboveReferenceSensitivityLevelfortheumsoundpathEvaluationofindicationsshallbedonewiththegaincontrolattheReferenceLevel.Generally,weldsshallbescannedusingthelowestnumberednode(fewestbounces).AlltestsshallbemadeinnodeI(1/2skip)andII.(1skip)wherepossibleandasrequiredforfullweldandbasemetalH.A.Z.coverage.Anadditional1/2skipshallbeusedif一般来说，焊缝应该使用最少波次（最少反射）波(1/2跨度)和二次波(1跨度)，以满足覆盖整个焊缝和热影响区.假如需要，可以使用一个1/2跨度。Submergedarcwelds(SAW)shallbescannedonthecapsurfacewith0ocompressionwavetodetectindicationsorientatedapproximayparalleltothesurfacee.g.cracking,andascandirectionalongtheweldtoensurefreedomfromtransverseweldmetalcracking.埋弧焊缝（SAW）应该在焊缝盖面用0o纵波探头进行扫描以探测出位于大致和表面SelectionofThenominalfrequencyshallbe2through4MHZ,unlessvariables,suchasfabricationmaterialgrainstructurerequiretheuseofotherfrequenciestoassureadequatepenetrationorbetterresolution.2—4MHZNote:Proceduresusingprobeswithfrequenciesbetween2MHZand4MHz,andreducedtransducersizeorshape,maybeusedprovidedtheyarequalifiedasdescribedinAWSD1.1-2002andacceptablebyCompany.ThetestingangleshallbeasshowninTable1,baseduponAWSD1.1,Table6.6"TestingAngle".1AWSD1.16.6"试验角度"Indicationsfoundintherootareasofgrooveweldsinbuttjointsandalongthefusionfaceofallweldsshallbefurtherevaluatedwitheither70,60or45deg.angles,whicheverisnearesttobeingperpendiculartotheexpectedfusionface.70°,6045°任一个最接近与预期的坡口面垂直的角度进一步评定。Table1PROBESELECTIONTESTINGANGLECONTINUED)1（连续的AreaofWeldThicknessTopMiddleBottom1707070#234#5#UltrasonicTestingofWeldsforTMCPPlateTMCPMainorThroughmemberBranember分构BeamDirection.MaintainSoundPerpendiculartoV–Paths,UseSingleandMultipleLegsandVariousAnglesAsRequiredtoCoverTheCompleteWeldIncludingTheRootAreaTable1:Probeselection–testingWeldWeldThicknessRemarks8to>25to>38to>44to>63.5to.....对接焊缝01F1FFFTubulargirth/LongitudinalWeldsotherthanTMCP.14#,14#,14#,ChordMemberfabricatedwithTMCPPlateTT10FFFF0°CompressionalscanprimarilytodetectLamellartearingornon-fusionalongthethrofacefromthe“c”face首选使用0°纵波扫描以从“c”10FF1F1F管材T,K,Y2F2F3F3F3FLEGENDX:CHECKFROMFACEG:GRINDWLDFACEO:NOTF:60°70° #:X:由“C”GO:F60°70°或#:ScanningForweldedtubularT,YandK-connections,scanningisgenerallydonefromthebracesideoftheweldonly.Thescanningpatternshallbeorientedrelativetothelocalweldaxis,ratherthanthebraceaxis.Sincemostoftheanticipatedseriouslydetrimentalweldfusiondefectswillbeparalleltotheweldaxisandgroovefaces,theultrasonicsearchbeamshallbegenerallydirectedinaplaneperpendiculartothelocalweldaxis.TYK型接头，扫描通常只能从焊缝的支管侧进行。扫描模式应该和ForbuttWeldsjoiningtubesorplates,scanningforvolumetricexaminationshallbecarriedoutfrombothsidesoftheweldonthesamesurface,whereveraccessible.Whereconfigurationoradjacentpartsofthecomponentsaresuchthatscanningfrombothsidesisnotpossible,scanningfromtheoppositesurfaceshallbeperformed.When100%coverageoftheweldandbasemetalH.A.Z.volumeisnotpossible,thisfactshallbeincludedinthe从相对面进行扫描。当扫描对焊缝和金属热影响区不可行时，应该将实际情况归纳入ForweldedplatecornerandT-jointwelds,scanningshallprimarilybe frombothsideoftheweldaxis,whereaccessible.对于焊接板角和TIfnecessarythecapoftheweldshallbedressedorgroundflushwiththeparentmaterialinordertoobtainasatisfactoryexamination.CircumstancesinwhichthisconditionmayoccurareasTheevaluationandsizingofsub-surfacereflectorsusingtwincrystalshearwaveToenlargethescopeofanexaminationpresentlyunattainablebecauseofweldreinforcemente.g.toenabletheroottobescannedwithsteeperanglesofrefractionortoenablescanningalongtheweldaxistodetectandevaluatetransverseindications.Scanningoftheweldwith0°compressionwaveifitisedthat orientatedapproximayparalleltothesurfacemaybepresente.g.lackofinter-runfusion.0°scanningofweldswithbackingfittingsi.e.rings,platesorsleeves,toassessfusionoftheroottothebackingifitisnotpossibletosatisfactorilyobtainresultsbyshearwaveangleprobealone.Thissituationcouldoccurwithmissalignedbackingfittingsorifthecharacteristicechofromthefittingislost.IndicationAllindicationswhichproducearesponsegreaterthan50%ofthereferencelevelshallbeinvestigatedtotheextentthatthetechniciancandeterminetheshapesize,identity,locationandorientationofallsuchreflectors,witheither70deg.,60deg.,be(however,beshallnotbeappliedtoTMCPmaterials)whicheversoundpathisnearesttobeingperpendiculartotheexpectedreflector.TMCP材料）确定所有此类反射体的外形尺寸、特性、位置和方位，还包括规格Onceareflectorhasbeenfoundbyscanning,itshallbecarefullyevaluatedtodeterminethefollowingcharacteristics,asrequiredforapplicationoftheAcceptanceCriteriaandforLocationfromanestablishedreferenceLocationwithintheweldcrossSizes---i.e.,lengthalongtheweldaxisandwidth(heightdimension)asseenintheweldcross-section,oramplituderelativetoreferencelevel.TypeandOrientation---i.e.,classifyaslinearorplanarversussphericalreflectors.Ifplanar,theorientationoftheplanerelativetothebraceorchordsidefusionboundaries.类型和方位---也就是相对球形反射体，划分为线型或平面型。假如为平面型时，平面DiscontinuitiesshallbeevaluatedbyuseofacombinationofBeamBoundaryandAmplitudeTechniques.DefectSizeThefollowingtechniqueshallapplytodeterminethedefectThelengthofthediscontinuityshallbeobtainedbyrecordingthelocationalongthelengthofweldasdeterminedby50%ofReferenceLevel(6dBdrop)foreachendofthe50%参考水平(6dB声降)所确定的焊缝Thewidth(height)ofthediscontinuityshallbedeterminedby20dBdrop(10%intensityoftheumecho)technique.WeldssubjectedtoUltrasonictestingshallbeevaluatedinaccordancewiththeacceptancecriteriadetailedinpar.9.2(RejectCriteriaLevel"A"),9.3(RejectCriteriaLevel"C")ofthisprocedure.经过超声波检验的焊缝应该按照本程序内的第9.2段（"A"级标准第9.3段（"C"级标准）上详细列出的验收标准进行评估。Thecriteriaforrootdefectsappliestosingle-sidedweldsinT-,Y-andK-tubularconnections.Therootareashallbedefinedasthatlyingwithin1/4in.(6.4mm)ortw/4,whichisgreater,oftherootofthetheoreticalweld,asshowninPY4-2/5-1-SPC--ST-1004SPECIFICATION WELDINGANDINSPECTIONandAWSshallTYKin.(6.4mm)tw/4的范围内，取较大者，为“PY4-2/-51-SPC-DPP-ST-1004焊接和检验规AWS规范应作为首选使用。Thecriteriaforinternaldiscontinuitiesshallapplytothebodyofsingle-sidedweldsinT-,Y-,andK-connectionsandtotheentiresectionofallotherwelds.有关不连续的标准应该适用于T,Y和K型接头上的单边焊焊缝本体和所有其它类Allindicationshaving50%(6dB)orlessamplitudethantheStandardSensitivityLevelshallbedisregarded,exceptlinearorplanarreflectorsshallbeevaluatedbymeansofbeamboundarytechniques.50%标准敏灵度的探伤显示应该忽略，除此之外线型或平面反射应该通IndicationsexceedingtheDisregardLevelshallbefurtherevaluatedasfollows(Level"A"&"C").级"Level"A"-----ApplicablewhenUltrasonicTestingisusedasternateto"A" AcceptisolatedrandomSphericalreflectors,with1in.(25mm)minimum separationuptotheStandardSensitivityLevel.Largerreflectorsshallbeevaluatedaslinearreflectors.1in.(25mm)隔距和达到标准灵敏度水平的独立、任意类型的球形可接受反射体AlignedsphericalreflectorsshallbeevaluatedaslinearRejectclusteredSphericalreflectorshavingadensityofmorethanonepersquareinchwithindicationsabovetheDisregardLevels(projectedareanormaltothedirectionofappliedstressaveragesovera6in.lengthofweld).6”焊缝长度上常规方向的设计区域）LinearorplanarreflectorswhosedimensionsexceededthelimitsofFig.3(baseduponAPIRP2X)shallberejected.Additionally,rootreflectorsshallnotexceedthelimitsofLevel超过图3限度（基于APIRP2X)的线型或平面反射体应该被。另外，根部反射体不9.3Level"C"----Experience-based,fitness-for-purposecriteriaapplicabletoT-,Y-,andK-connectionsinredundantstructureswithnotch-toughweldments"C"级----应用于带有切口不敏感焊件的超静定结构上的T-,Y-,K-型接头的具备一定SphericalreflectorsshallbeasdescribedinLevel"A",exceptthatanyindicationswithinthefollowinglimitsforlinearorplanarareacceptable.LinearorplanarreflectorwhosedimensionsexceededthelimitsofFig.4basedupon(APIRP2X)shallberejected.超过图4限度（基于APIRP2X)的线型或平面反射体应该被Theresultsshallbereportedontheattachedformbythecertified nelwhoperformstheUltrasonicexamination.repairsshallbeidentificationshallindicaterepairstatusi.e.,R1shallbeidentifiedas(ReportNo.),SuffixA,R2,SuffixB,R3,SuffixCetc.Additionaltestingwithoutrepairwillbeidentifiedonthereportsuffixedas(ReportNo.),-1,-2etc.A,R2,SuffixB,R3,SuffixC等，另外不必反修修的额外检验将以添加后缀(报告),-1,-2RP2XUltrasonicExamofOffshoreStructureFabricationRP2X.海上结构施工的超声波探伤检验AccumulatedLengthinInchesofReflectorsOverLengthofWeldLengthinInchesofLargestIndividualWeldThickness,Inches2InternalLinearorPlanarReflectorsabovereferencelevel(exceptrootofone-sidedT、K&YJoints)Minorreflectors(abovedisregardleveluptoreferenceRootreflectorsupto1/16″notchforone-sidedT、K&YJointsT,K,Y1/16″深槽的根部反射体Over2←forthisweldsize12←EvaluateoverthislengthnottoexceedD/2whereDistubediameter)12英寸以上←在该长段上进行评估(D为管道直径，过D/2)Allreflectorsabovedisregardlevelincludingrootreflectorsofone-sidedTK&YAllreflectorsabove1/16″notchare*Adjacentreflectorsseparatedbylessthantheiraveragelengthshallbetreatedas**DiscontinuitiesintherootbeadofDetailsCandDofFig3.5aaretobe3.5aCDFIG3.3-LEVEL"A"ACCEPTANCEWELD图 Chord Brace Directionofapplied Length Width LandWbasedonarectanglewhichtotallyenclosedindicatedL和WFIGAligneddiscontinuitiesseparatedbylessthanL1＋L2dividedby2andparalleldiscontinuitiesseparatedbylessthanW1＋W2dividedby2shallbeevaluatedas间隔小于L1＋L22，排成直线的不连续，以及间隙小于W1+W22，平行的不Accumulativeflawsareevaluatedover6inchesorD/2lengthofweld(whicheverisless)6D/2长度（取较小值）对累计缺陷进行评估WeldthroatthicknessTubediameter–管道直径FIGT、K&YRootDefectsT、K&Y型根部缺陷Forcompletepenetrationweldsinone-sidedT、K&YtubularconnectionsmadewithDiscontinuitiesintherootbeadofDetailsCandDofFigure3.5.aaretobe3.5aC和D Individual 接FIGInternalReflectorsandAllotherDiscontinuitieswhicharewithinWorT/6oftheoutsidesurfaceshallbesizedasifextendingtothesurfaceoftheweld.应该测定在外表面的W或T/6*Reflectorsbelowreferencelevel”A1/16〞sidedrilledholearetobedisregarded.LevelCAcceptanceweldqualityFig.4Level”C”Acceptanceweld4C”Appendix-A:DeterminationofTransferA:MethodfortheDeterminationofAttenuationandTransferTransfercorrectionforanglebeamtestingshallbeperformedasperthefollowingprocedure:Thetimebaseshallbecalibratedtoasuitablerangeusingasingleprobehavingthesamecharacteristicsasthetestprobe.Two(2)angleprobesofthesamecharacteristicsasthetestprobeshallbeused..one(1)asatransmitterandtheotherasareceiver...sothattheycanbeusedinathrough-transmissiontechnique.用两个具有和检验探头相同特征的斜探头.1个作为发射和另外一个作为接收...以便Theprobesshallbesetinposition(A)onthereferencecalibrationblock.SeeFig.Inthesetups