ARAMCO阿美认证检验员考试题及答案.docx
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ARAMCO阿美认证检验员考试题及答案.docx
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ARAMCO阿美认证检验员考试题及答案
QuestionnaireandAnswerSheet:
MECHANICALGENERAL1
机械综合1
1.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,lowerhardness
6.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.
QuestionnaireandAnswerSheet:
Mechanicalgeneral2
机械综合2
1.Whatisamil?
“Mil”是什么?
1/1000partofaninch.
2.Differencebetweenstressrelievingnormalising.
3.Name2testscarriedouttodeterminetoughness.
D.W.T.T.,CHARPY
4.Whatismax.hardnessvalveasperNACEMRD175?
c)Steel235Hvmax.钢最大:
235Hv
5.Howwouldyoumeasuregramophonelinesonaraisedfaceofaflange?
/////
6.Name3typesofflanges.
Weldneck,RaisedFace,GroovedFace
7.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)keepinmindtheskineffectwhenusingACcurrent
3.TRUEorFALSE:
Acoilshotproduceswhatisgenerallyconsideredtobealongitudinalmagneticfield.
TRUE(applytherighthandrule)
4.AsperASMESectionV,whatamperageshouldbeusedforthedryprodexamofbasemetal?
Forthicknessbelow¾”>>90-110Amp/25mmforthicknessabove¾”>>100-125Amp(refertoASMESectionV)
5.SurfacedefectsaremoreclearlydefinedbyA.C.orD.C.current.
ByA.C.
6.TRUEorFALSE:
Discontinuitiesparalleltothemagneticfieldproducethestrongestindications
FALSE,bestcaseis90°tothemagneticfieldlines.
7.TRUEorFALSE:
Itispossibletodetectdefectsbymagneticparticleexaminationthatcannotbedetectedbyradiography.
TRUE,forexample,byx-raymethodusinganIridium192source,youwillnotdetectverysmall
Cracks,called“haircracks”.ThosekindsofdefectscanbefoundbyMT-wetfluorescentmethod,onthesurfaceorclosetothesurface.
8.Whatmethodismoresensitiveforthedetectionofsubsurfacedefects,ACorDCcurrent?
A.C.
9.AccordingtoASMESectionV.whatarethethreemainstepsinamagneticparticleexamination?
Cleaningupthetestsurface,magnetizingofthecomponentandapplicationoftheaccordingtestmedium,i.e.drypowderorfluorescentsuspension,evaluationandrecordtheresults.
10.TRUEorFALSE:
Whenpartsaretobeweldedaftermagneticparticletesting,residualmagnetismmayattractthefillermaterial.Thisaidsinthedispositionofweldmetalimprovingtheweldquality.
TRUE正确
11.TRUEorFALSE:
Alongitudinalmagnetizedpartretainsamoreobjectionableresidualfieldthanacircularmagnetizedpart.
TRUE错误
12.TRUEorFALSE:
Demagnetizationisstillrequiredwhenapartwillbesubsequentlyheattreated.
FALSE
13.TRUEorFALSE:
Thedetectionofsubsurfacedefectsover¼”deepinweldmentsismoreofaproblemthanisthecaseofsurfacedefects.
TRUE正确
14.Whenamagneticfieldisinducedinapartwithprods,spaced6inchesapart,thefieldisconsideredas:
a)solenoidfieldb)distortedcircularfieldc)longitudinalfieldd)yokefield
b)
15.TRUEorFALSE:
Abruptchangesinthickness,highamperagesanddrilledholesnearthetestsurfacearecausesofnorelevantindications.
TRUE正确
QuestionnaireandAnswerSheetRT(RadiographyTESTING)
射线检验
1.Whatisthepurposeofapenetrameter?
Toindicatethequalityofradiologicalimages.
2.Whataretheminimumandmaximumacceptancelevels,perASMESectionV,forfilmdensityusingagamma-raysourceandsinglefilmviewing?
1.5–4.0(-15%+30%)
3.Namefive(05)attributeswhicharenormallyincludedinawrittenradiographicprocedure.
Materialthickness,isotopeorX-raysource,minimumsourcetoobjectdistance,maximumsourcesize,filmtype,penetrameterimagerequirements,radiographictechnique,
4.Nameatleast5typesofwelddefectswouldyouexpecttofindwithRadiography.
Cracks,porosity,slaginclusion,tungsteninclusion,lackofpenetration,lackoffusion,clustergaspores,offset,burnthroughisolatedinclusion,
5.WhatAmericanstandardspecifiesthequalificationrequirementsfortechniciansinvolvedinnondestructivetesting?
ASNT,RPSNT-TC-1A
6.TRUEorFALSE:
ASMESectionVIII,div.1containsradiographicacceptancecriteriaforroundedindication.
True(Appendix4)正确(附录4)
7.Inadoublewalltechniqueforsinglewallviewing,whatistheminimumnumberofexposuresrequiredbyASMEV?
Threeexposurestaken120deg.toeachother
8.Sourcesize,specimenthickness,andsourcetoobjectdistancesarethreefactorsthatdeterminethe______________________________ofaradiograph?
Sensitivity灵敏度
9.WhatdoesASMEVsayaboutqualityofradiographicfilm?
Allradiographsshallbefreefrommechanical,chemical,orotherblemishestotheextentthattheydonotmaskandarenotconfusedwiththeimageofanydiscontinuityintheareaofinterest.
10.Aradiographicfilmhavingwidelatitudealsohas,bydefinition:
a)poordefinitionb)lowcontrastc)highspeedd)noneoftheabove.
b lowcontrast低的对比度
11.TRUEorFALSE:
Tomakeaproperevaluationwheninterpretingaradiograph,itisnecessarytoknowtheweldingprocessusedtomaketheweld.
True正确
12.Adarklineofvaryingwidthonaradiographwhichfollowstheedgeofthefusionzoneofaweldcapisindicativeof:
a)undercuttingb)incompletefusionc)porosityd)shrinkage
Incompletefusion不完全融合
13.Aradiographthatshowsan
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