ARAMCO阿美认证检验员考试题及答案

D:\temp\1591002065438.docPage1of58QuestionnaireandAnswerSheet:MECHANICALGENERAL1机械综合11.WhatisthepurposeofapenetrameterorIQI?Indicatesradiographicsensitivityandqualityofthetechniques.2.Whatismeantbythetermsensitivitywithregardtoradiography?Theabilityofaradiographictechniquetorevealdefectsofaspecificsize.3.Whatarethelimitationsofmagneticparticleinspectionandliquidpenetrantinspection?M.P.canbeusedonlyonferromagneticmaterialstodetectsurfacesubsurfacediscontinuities.L.P.canbeusedtodetectdefectsopentothesurface.BothM.P.andL.P.requiresurfacepreparationsbeforetesting.4.WhatinformationiscontainedinaWeldingProcedureSpecification?Processtype,groove(joint)design,materialtype,materialthickness,positionofgroove,fillermetaltype,pre-heatrequirements,interpasstemperature,postweldheattreatmentrequirements,shieldinggasorfluxtype,electricalcharacteristics,techniquesofwelding.5.Whyispostweldheattreatmentrequiredforsometypeweldments?Relievestresses,lowerhardness6.WhatisthebasicdifferencebetweenaDINandanASMEpenetrameter?DINpenetrameterisawiretypepenetrameter,ASMEpenetrameterisaholetypepenetrameter.7.Whattypeofdefectswouldyouexpecttofindduringvisualinspectionofacompletedweld?Undercutting,excessiveorinsufficientweldreinforcement,excessiveirregularities,incompletepenetrationonasinglebutt-weld,weldspatter,etc..8.Whatprecautionmustbetakenwithlowhydrogenweldingelectrodes?Storeinovenwhennotinuse,keptinheatedcontainerbywelderawaitinguse.9.Whatinformationnormallyappearsonradiography?Penetrameteridentification,Locationofmarkerstoensurecompletecoverage,thenameoftheinspectinglaboratory,thedate,thepartnumber,whetheroriginalorsubsequentexposure.10.Whatistheruleofthumbusedtodeterminetheamperageforthedry,prodmethodofmagneticparticleinspection?100–125amps/inch.11.Whatmaterialsarethetransducermadefrom?Quartz,BariumTitanate,LithiumSulphateandCeramics.12.Whatisafilmdefect?Amarkonthefilmusuallycausedbyimproperhandlingorprocessing.13.Ifyouwereinspectinganitemusingtheprodmethodandlocatedaweakcrackpattern,wherewouldyouplacetheprodstoobtainastrongerlocation?Relocateprods90degreestothecrackpatternandre-inspect.14.Whattypicaldefectswouldyouexpectwhileinspectingacasting?Sandandslaginclusions,gasporosity,shrinkage,hottears.15.Describethepulseechotechnique.Whenanelectriccurrentisappliedtothecrystal,thecrystalvibratestransformingtheelectricenergyintomechanicalvibrationswhicharetransmittedthroughacouplingmediumintothetestmaterial.Thesepulsevibrationspropogatethroughtheobjectandarereflectedasechoesfrombothdiscontinuitiesandthebacksurfaceofthetestpieceandwillappearasaverticaldeflectiononthecathoderaytubeoroscilloscope.16.Whichmethodi.e.magneticparticleexaminationorliquidpenetrantexamination,locatenon-metallicinclusionsopentothesurface.Both.17.Whatisa“WeldProcedureQualificationRecord?Adocumentwhichcontains,essentiallythesameinformationasaWPSbutincludestheresultsofthetestsnecessarytoqualifytheWPS.Alsolistedarethe“essentialvariable”ofthespecificprocessofprocesses.18.Whatismeantbytheterm“FilmDensity”?Measurementorfilmblackening.测量或胶片的发黑度。Densitometerisusedtomeasurefilmdarkening.显像密度计是用于测量胶片的暗色变化。19.Whatfactorsdeterminetheechoheightofaflawinultrasonicinspection?Sizeoftheflow,positionororientationandinstrumentcharacteristics.20.Whatsurfacepreparationisrequiredonamaterialbeforemagneticparticleorliquidpenetrantinspection?Thematerialsurfaceshouldbeclean,dryandfreefromoil,grease,weldspatteroranythingthatwillobscureorinterferewithdefectdetection.Page2of58QuestionnaireandAnswerSheet:MECHANICALGENERAL2机械综合21.Whatisamil?“Mil”是什么？1/1000partofaninch.2.Differencebetweenstressrelievingnormalising.3.Name2testscarriedouttodeterminetoughness.D.W.T.T.,CHARPY4.Whatismax.hardnessvalveasperNACEMRD175?c)Steel235Hvmax.钢最大：235Hv5.Howwouldyoumeasuregramophonelinesonaraisedfaceofaflange?/////6.Name3typesofflanges.Weldneck,RaisedFace,GroovedFace7.Whatprecautionsmustbetakenwhenweldingcladdedpipe?Checkangle,Prepetc.whenweldingensuresslagisremovedandfreedofbeadsetc.8.Whatinfoisrequiredonastandardmillcert?CastAnalysis,ChemicalAnalysis,P.O.Number,Client,Mech.TestResultsetc.9.WhyisradiographypreferredoverotherN.D.T.methods?PermanentindicationsonSPAM.QuestionnaireandAnswerSheet(MAGNETICALPARTICLETESTING)磁粉检验1.Canheathaveaneffectontheresultsofamagneticparticletest?YES是的2.Howdoestheappearanceofasurfacedefectdifferfromthatofasubsurfacedefect?Surfacedefectshaveamoreclearanddistinctindicationandareeasiertodetect,theycanalsobere-testedbyPTmethod.SubsurfacedefectsaredetectablebyMT-Method(mostreliablemethodis“wetfluorescent”afterA.C.magnetizing)keepinmindtheskineffectwhenusingACcurrent3.TRUEorFALSE:Acoilshotproduceswhatisgenerallyconsideredtobealongitudinalmagneticfield.TRUE(applytherighthandrule)4.AsperASMESectionV,whatamperageshouldbeusedforthedryprodexamofbasemetal?Forthicknessbelow¾”90-110Amp/25mmforthicknessabove¾”100-125Amp(refertoASMESectionV)5.SurfacedefectsaremoreclearlydefinedbyA.C.orD.C.current.ByA.C.6.TRUEorFALSE:DiscontinuitiesparalleltothemagneticfieldproducethestrongestindicationsFALSE,bes