4. CAPITULO IV – RESULTADOS DE LA INVESTIGACION
4.1. Análisis e Interpretación de los resultados
4.1.4. Objetivo 4
10 Bonus Bonus Questions Questions for for API API 510 510
441.
441. TheThemostmostcommoncommonformsformsof of CUICUIarearelocalizedlocalizedcorrosioncorrosionof of carboncarbonsteelsteeland:and:
A)Chloridestresscorrosioncrackingof austeniticstainlesssteels B)Polythionicacidcorrosionof stainlesssteels
C)Stresscorrosionof stainlesssteels D)Noneof theaboveattackstainlesssteels Answer:
Answer:AA(API(API572,572,SectionSection8.2.1)8.2.1)
442.
442. AApressurepressurevesselvesselshouldshouldbebemaintainedmaintainedaccordingaccordingtotothetherequirementsrequirementsof of thethecode:code:
A)Accordingtothelatestcoderequirements B)Accordingtotheowner‐userspecifications C)Underwhichitwasdesignedandconstructed D)Noneof these
Answer:
Answer:CC(API(API572,572,SectionSection5)5)
443.
443.InspectorInspectormeasuredmeasuredundercutundercutononaagirthgirthweldweldduringduringthetherepairrepairtotoananASMEASMESectionSectionVIII,VIII, Div.
Div.IICarbonCarbonSteelSteelvesselvessel(Stamped(StampedRTRT1)1)andandititwaswasfoundfoundtotobebe1/321/32inchinch(1mm)(1mm)inindepthdepth maximum.
maximum.ShellShellbasebasemetalmetalisis22inchesinchesthickthickandandhavinghavingPWHT.PWHT.InspectorInspectorshall:shall:
A)RejecttheweldbecausenoundercutisallowedonanyvesselweldsrequiringPWHT B)RejecttheweldbecauseundercutwillaffectRTFIinterpretation&requestsurfacegrinding C)AccepttheweldbecauseundercutiswithinASMESectionVIII,Div.Icodeallowedtolerance D)ConsultwiththeVessel(Welding)Engineer
Answer:
Answer:CC(ASME(ASMEVIII,VIII,DivDiv1,1,UWUW‐35.b.2)35.b.2) 444.
444.WhenWhenreviewingreviewingRTRTfilm,film,aadarkeneddarkenedperfectlyperfectlystraightstraightlinelinecancanbebeseenseenininthetheveryverycentercenter of
of thetherootrootpasspass(lightest(lightestarea).area).TheThelengthlengthof of thethelinelineisisaboutabout75mm75mmlong.long.ItItisislikelylikelywhichwhich type
typeof of discontinuity?discontinuity?
A)Incompletepenetration B)Incompletefusion
C)Wormholeporosity D)Crack
Ans:
Ans:AA(API(API577577IllustrationIllustrationforforIP,IP,NoteNote2)2) 445.
445.If If whitewhitesaltssaltsarearefoundfoundatatcrackscracksininaavessel,vessel,whatwhatisisthethelikelylikelydamagedamagemechanism?mechanism?
A)Causticembrittlement B)Hydrogenblistering
C)Chloridestresscorrosioncracking D)Aminestresscorrosioncracking Answer:
Answer:AA(API(API572572Section/Para.Section/Para.10.3.1310.3.13ThirdThirdparagraph)paragraph)
10
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446.
446.TheTherulesrulesforforimpactimpacttestingtestingof of carboncarbonsteelsteelininSectionSectionVIII,VIII,Div.Div.1,1,CarbonCarbonsteelsteelvesselvessel materials
materialsrequirerequirewhatwhatkind(s)kind(s)of of impactimpacttests?tests?
A)Brinnell&Rockwell B)Izod&CharpyV‐notch C)CharpyV‐notch D)Brinnell Answer:
Answer:CC(ASME(ASMEIX,IX,QWQW‐170)170) 447.
447.WhatWhatisisthetheminimumminimumlengthlengthof of aaspotspotradiographradiographasasperASMEperASMESectionSectionVIII,VIII,DivisionDivision1?1?
A)PertheminimumdimensiongivenintheInspectionPlanorapprovedRTprocedure B)6inches
C)12inches D)Noneof these
Answer:
Answer:BB(ASME(ASMEVIII,VIII,DivDivI,I,UWUW‐52.c52.c 66inches)inches) CouldCouldbebeononClosedClosedBookBookexamexamalso)also) SpotRadiographyRulesUW‐52
(c) Standards for Spot Radiographic Examination. Spot examination by radiography shall be made in accordance with the technique prescribed in UW-51(a). The minimum length of spot radiograph shall be 6 in.
448.
448.WhatWhatisisthethemaximummaximumlengthlengthof of aaroundedroundedindicationindicationwhenwhenspotspotradiographyradiographyhashasbeenbeen specified
specifiedforforaagivengivenpressurepressurevesselasvesselasperperASMEASMESectionSectionVIII,VIII,DivisionDivision1?1?
A)PertheapprovedRTprocedure B)6mm
C)12mm D)Noneof thesearecorrect
Ans:
Ans:DD(ASME(ASMEVIII,VIII,DivDivI,I,UWUW‐52.c.352.c.3 RoundedRoundedindicationsindicationsarearenotnotaafactorfactor NoNolimitlimitexistsexists SpotRadiographyRulesUW‐52
(c) Standards for Spot Radiographic Examination. Spot examination by radiography shall be made in accordance with the technique prescribed in UW-51(a). The minimum length of spot radiograph shall be 6 in. Spot radiographs may be retained or be discarded by the Manufacturer after acceptance of the vessel by the Inspector. Acceptability of welds examined by spot radiography shall be judged by the following standards:
(3) Rounded indications are not a factor in the acceptability of welds not required to be fully radiographed.
449.
449.ExamExamQuestion:Question:ToTobebeconsideredconsideredvalidvalidbybyananInspector,Inspector,PQRsPQRsmustmustbebecertifiedcertifiedby:by:
A)MechanicaltestsperASMEIX B)AcorrespondingandsupportingWPS C)ApprovedTestLabSignature&date D)Theowneruserinspectionorganization Ans:
Ans:CC……(API(API510510BodyBodyof of KnowledgeKnowledgePartPart22(Notes)(Notes)20102010Edition/2011Edition/2011examsexams MustMustknowknow 450.
450.DesignatedDesignatedareasareasononpressurepressurevesselsvesselswherewhereperiodicperiodicexamsexamsareareconductedconductedarearecalled:called:
A)Inspectionpoints B)Surveypoints C)TMLs D)CMLs Ans:
Ans:DD(API(API510510definitionsdefinitionsforforConditionConditionMonitoringMonitoringLocations)Locations)
API
API 576 576 (Chapter (Chapter 5 5 & & 6) 6) Exam Exam Questions Questions (API (API 510, 510, Section Section 6.6) 6.6)
QuestionsQuestions272272toto285285covercoverAPIAPI510,510,SectionSection6.66.6 TheTheAPIAPI510510toto576576PathwayPathway Must
MustKnowKnowAPIAPI576576……Ch.Ch.55(Causes(Causesof of ImproperImproperPerformance)Performance)&&Ch.Ch.66(Inspection(Inspection&&Testing)Testing)
E-Library API 510 folder for Exam questions! API 576 has 2 handouts!
*** In the margin & underlined areas are those where exam Q’s will be!
451.
451.(Same(Sameasas##274274……repeatedrepeatedforforeffect).effect).SpringSpringfailuresfailuresarearealmostalmostalwaysalwayscausedcausedby:by:
A)Corrosionthatincludessurfacecorrosionandstresscorrosioncracking B)Stressrelatedfailureduetoimpropersizing/usingsubstandardparts C)Mechanicalfailureduetoexcessivemovementandvibration D)Excessivechatteringandwiredrawing
Ans:
Ans:AA(510,(510,6.6.66.6.6&576,&576,ParaPara5.1.15.1.1&&5.3.25.3.2&&FigFig30)30)……PZVPZVSpringSpringFailureFailureCauseCause==CorrosionCorrosion 452.
452.WhichWhichof of thethefollowingfollowingmaymaybebeinstalledinstalledononthetheinletinletororoutletoutletof of aapressurepressure‐relief relief valvevalve toprovide
toprovideaddedaddedcorrosioncorrosionprotectionprotectionof of thethevalvevalveinternals?internals?
A)Orificeplateslimitingorrestrictingflowtoandfromrelief valvestoreducehammering B)Isolationvalvesthatutilizethe“doubleblockandbleed”designstopreventcorrosion C)In‐linescreens&filtersthattrapdebrisandpreventdepositionatinternalsurfaces D)Rupturediskdevicesthatprotecttherelief valveagainstsystemfluids
Answer:
Answer:DD(576,(576,ParaPara5.1.3)5.1.3)……RuptureRupturediscsdiscsthatthatprotectprotectPZVsPZVsagainstagainstsystemsystemfluidfluidcorrosioncorrosion 453.
453.WhichWhichof of thesetheseisisnotnotaacausecauseof of damageddamagedrelief relief valvevalveseatsseatsininrefineryrefineryservice?service?
A)Carelesshandlingduringmaintenance(bumping,dropping, jarring,orscratchingvalveparts) B)Undersizedrelief valvesthatcloseabruptlyresultingindisc/nozzleseatingsurfacedamage C)Corrosionandforeignparticles(millscale,weldspatter/slag,dirt,etc)enteringvalveinlets D)Improperorlengthypipingtovalveinletsorlineobstructionsthatcausevalvechattering Ans:
Ans:BB(576,(576,ParaPara5.2.2.g)5.2.2.g)……SevereSevereoversizingoversizingcausescausesabruptabruptclosing/damageclosing/damage 454.
454.AArapidrapidcyclecycleof of openingopeningandandclosingclosingsubjectingsubjectingrelief relief valvevalveseatingseatingsurfacessurfacestotoseveresevere hammering
hammeringthatthatsometimessometimesdamagesdamagesthetheseatingseatingsurfacesbeyondsurfacesbeyondrepairrepairisiscalled:called:
A)Hammer B)Vibration‐inducedfatigue
C)Chatter D)Wiredrawing
Answer:
Answer:CC(API(API576,576,ParaPara5.2.2.c)5.2.2.c)……ChatterChatter 455.
455.LeakageLeakagepastpastrelief relief valvevalveseatingseatingsurfacessurfacescausingcausingseatseatdamagedamagebybyerosionerosionisiscalled:called:
A)Hammer B)Leak‐byorwicking
C)Chatter D)Wiredrawing
Answer:
Answer:DD(API(API576,576,ParaPara5.2.2.e)5.2.2.e)……WireWiredrawingdrawingisiserosion/leakageerosion/leakageacrossacrossseatingseatingsurfaces!surfaces!
API
API 576 576 (Chapter (Chapter 5 5 & & 6) 6) Exam Exam Questions Questions (API (API 510, 510, Section Section 6.6) 6.6)
QuestionsQuestions272272toto285285covercoverAPIAPI510,510,SectionSection6.66.6 TheTheAPIAPI510510toto576576PathwayPathway 456.
456.WhichWhichof of thesethesestatementsstatementsareareNOTNOTtruetrueregardingregardingthethecausescausesof of failedfailedspringsspringsininrefineryrefinery relief
relief valves?valves?
A)Springsoftenweakenandfailduetotheuseof impropermaterialsinhigh‐tempservice B)Surfacecorrosionandstresscorrosioncrackingarethemostcommontypeof failure C)Hydrogensulfide(H²S)frequentlycausescorrosionfatiguefailureof springs D)Failedspringsarealmostalwayscausedbycorrosion
Ans:
Ans:DD(576,(576,SectSect5.3.1/2/3/4)5.3.1/2/3/4)……H²SH²Scausescausesspringstressspringstresscorrosioncorrosioncrackingcracking(NACE(NACEMR0175)MR0175) 457.
457.WhenWhenselectingselectingthetheappropriateappropriatespringspringmaterial,material,whichwhichof of thesethesefactorsfactorsareareNOTNOTthethemostmost important
importantforformaterialsmaterialstotopreventpreventStressStressCorrosionCorrosionCrackingCracking(SCC)(SCC)ininrefineryrefineryrelief relief valves?valves?
A)Materialstrength B)Hardness
C)Ductility D)Heattreatment
Answer:
Answer:CC(API(API576,576,SectSect5.3.4)5.3.4)……PagePage3030belowbelowFigureFigure3030andandthethebrokenbrokenspringspring 458.
458.DuringDuringrelief relief valvevalvetestingtestingusingusingairairororbottledbottlednitrogen,nitrogen,whatwhatdoesdoesthetheinspectorinspectorcarefullycarefully listen
listenforfortotodeterminedeterminethatthatthethe“set“setpressure”pressure”hashasbeenbeenreached?reached?
A)Adistinctpoponlymustalwaysbethedeterminingfactor B)Anaudibleleak(hissingnoise)followedbyadistinctpop C)Anaudibleleak(hissingnoise)isthedeterminingfactor D)Noneof thesearecorrect
Answer:
Answer:BB(API(API576,576,SectSect5.4.3)5.4.3)……AAisisarguablyarguablycorrectcorrect……UnderstandUnderstandthethetermtermblowdownblowdown 459.
459.WhenWhentestingtestingrelief relief valves,valves,thetherelief relief valvevalvetermterm“blowdown”“blowdown”refersreferstotothe:the:
A)Differencebetweensetpressureandtestor“pop”pressure B)Differencebetweensetandreseatingpressure
C)Testor“Pop”pressure D)Reseatingpressure Answer:
Answer:BB(API(API576,576,SectSect5.4.6)5.4.6)……SeeSeealsoalsovalvevalveadjustingadjustingringsringstotocontrolcontrolthetheblowdownblowdown 460.
460.AAtermtermusedusedrelatedrelatedtotostickingstickingof of thethediskdiskininaarelief relief valvevalvewhenwhenforeignforeignparticlesparticlesininthethe guiding
guidingsurfacessurfacestendtendtotorollrollthethemetalmetalupup(tearing(tearingthethemetal)metal)isiscalled:called:
A)Galling B)Chattering
C)Hammering D)Wiredrawing
Answer:
Answer:AA(API(API576,576,SectSect5.5.2)5.5.2)……GallingGallingisisaahugehugeproblemproblemcausingcausingmalfunctionsmalfunctionsininguidingguiding Surfaces
Surfacesandandthethecorrectcorrectlubricantlubricantselectionselectionplaysplaysananimportantimportantroleroleininthetheproperproperoperationoperation
API
API 576 576 (Chapter (Chapter 5 5 & & 6) 6) Exam Exam Questions Questions (API (API 510, 510, Sect. Sect. 6.6 6.6 Pathway) Pathway)
461.
461.RoughRoughhandlinghandlingof of aarelief relief valvevalvecancancausecauseof of thethefollowingfollowingproblemsproblemsexcept:except:
A)Liftingleversmaybedamaged B)Achangeinthesetpressurecanresult
C)Internalorexternalleakagecanoccurwhenthevalveisinservice D)Thevalvemaybecomefrozeninserviceandfailtoperformitsfunction Answer:
Answer:DD(API(API576,576,SectSect5.8.1)5.8.1)……CorrosionCorrosioncausescausesthethevalvevalvetotobecomebecomefrozenfrozenandandfunctionfunction 462.
462.RoughRoughhandlinghandlingcancanoccuroccurwhen:when:
A)Duringshipmentonly
B)Duringshipmentormaintenance
C)Duringshipmentormaintenanceorinstallation
D)Duringshipmentormaintenanceorinstallationoroperation Answer:
Answer:CC(API(API576,576,SectSect5.8.1)5.8.1)……EasyEasyquestionquestion……DDisistheretheretotofoolfoolyouyou 463.
463.PressurePressurerelief relief valvesvalvesshouldshouldbebeshippedshipped(transported)(transported)ininwhatwhatmanner?manner?
A)Onpallets(packagedandsecuredtopreventdamage) B)Inanuprightposition(toassurecorrectspringfunction) C)Incrates(packagedlikethedelicateinstrumentsthattheyare)
D)Individuallywrappedtosecurethevalveandpreventdamage/corrosion Answer:
Answer:BB(API(API576,576,SectSect5.8.15.8.1&&5.8.4.2)5.8.4.2) 464.
464.WhichWhichof of thesetheseprovidesprovidesseatseatloadingloadingtotokeepkeepthethepressurepressure‐relief relief valvevalvetightlytightlyclosed?closed?
A)Blowdown
B)Colddifferentialtestpressure(CDTP)
C)Propercapacitydesign=trouble‐freeoperation D)Differentialbetweenoperatingandsetpressures Answer:
Answer:DD(API(API576,576,SectSect5.8.1)5.8.1)……blowdownblowdown==differencedifferencebetweenbetweensetsetandandreseatingreseatingpressurepressure 465.
465.(Same(Sameasas##275275……repeated)repeated)TheTheprincipalprincipalreasonreasonforforinspectinginspectingaapressurepressurerelief relief devicedeviceis:is:
A)Todetermineif itisfunctioningproperly(soitcanprovideprotectiontoequip/personnel) B)Topreventfoulingandpluggingfromoccurringthatcouldrenderavalveinoperable C)Toassureequipment(pressurevessel)safetybypreventingOverpressurization D)Toassurepersonnelsafety
Ans:
Ans:AA(API(API510,510,Par.Par.6.66.6 APIAPI576576 Ch.Ch.6,6,Para.Para.6.1.16.1.1ininentirety)entirety)APIAPIwebsitewebsiteSampleSampleQ Q
WARNING:
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