2023年轮机长和大管轮面试题目

InterviewconductedforC/E&2/Ecandidate

1:Whatistheplanttoreadyformanoeuvinganddepartureport?

*startthesecondgeneratorandafterallchecks,takeitonload

*Thethirdgeneratorshouldbekeptonstandbycondition

*Essentialstepstobenoted:Turningengineindicatorcocksparametersabnormalnoise

*ChecksystemFOserviceandsettlingtanksdieseloilservicetankairsystemLOsystemT/CCWsystemcheckingthefuelregulatinggear&startingsystem

*slowturningtheengine

*thismustbecarriedouttopreventdamagecausedbyfluidinoneofthecylindersandtocheckthereversingmechanism

*Beforebeginningtheslowturningobtainpermissionfromthebridge

2whatitemstobeanalysisonlubeoil?

*SpecificgravityviscosityflashpointTAN(totalacidnumber)SAN(strongacidnumber)alkalinityTBN(totalbasenumber)watercontentConradsoncarbonashinsoluble

3whatcauseofexhausttemperaturerisesinallcylinders?

*Increasedscavengeairtemperatureowingtoinadequateaircoolerfunction

*Fouledairandgaspassages

*Inadequatefueloilcleaningoralertedcombustioncharacteristicsoffuel

*wrongpositionofcamshaft

4whatcausesofhighturbochargerspeed?

*Fouledairfilter(earlystageofunloadingthecompressor)

*Fire(earlystage)intheexhaustcheckimmediately.

5whatcausesofcylinderknocking?

*Fueltimingtoofaradvanced

*fuelinjectorvalveneedlestickingatopenposition

*Excessivecarbonbuiltuponthecrown

*Brokenexhaustvalve

*Mechanicaldamageinthe3cylinder

6whatactiontobetakenofcrankcasemistdetectoralarm(nevercutoutmistdetectorpotentiallydangerous)?

*InformbridgeandC/E

*Stayawayfromcrankcases

*slowdownandstop

*startturninggearimmediatelyforatleast30minutestocooldown

*Throughinvestigationofmistdetectorcrankcaseabnormalityandmovingpartsrequired

7whatcausedofscavengefireandactiontaken?

*InformbridgeandC/E

*Donotstandnearthereliefvalves

*slowdownengineensurethattheauxiliaryblowersareoff

*Incasethefirepersistsstoptheenginegraduallytopreventriskofpistonseizure

*Fireshouldbegooffwhenalldepositsburntout

*keepturningtheenginewithcoolingontopreventseizureofmovingparts

8whatactiontakenwhencrankcaseexplosion?(Mostofthecasesenginewillsuddenlystopuponexplosion)

*Informbridgeandchiefengineer

*evacuatetheE/R

*Everysafeefforttobemadetoturnenginebyturninggearorslowturningfor30minutestopreventseizureofmovingparts

*Thoroughinvestigationrequiredintothecauseoftheexplosionbeforerestarting

9Whatwillyoudowhenboilerwaterlevelwaslowduringnormalsteamingcondition?

*Fiststartthestandbyfeedwaterpump

*Secondcheckandwashthelocalwaterlevelgauge

*Thirdcheckanyleakageonsteampipesorsafetyvalves

10Turbochargersurgingcausesandpreventivemeasures?

*T/Csurgingcanbedividedintothreemaincategories

*malfunctioninthefuelsystem

*Rapidvariationsintheengineload

*Fuelsystemfuelinjectionsystemfuellinecomponentsfueltiming

*exhaustsystemvalveexhaustpassagethroughturbochargerandgasboiler

*scavengeairsystem

*MiscellaneousrapidchangesinloadandRPMgovernor

*Immediateactiontemporarilycounteractedbyblowingoff

ReduceengineloadbytakingtheT/Cawayfromthesurgingline

*Preventivemeasuresregularmaintenanceofitemsmentionedabovepreventloadfluctuationsduringballastvoyageandbadweather

*PeriodicalcheckofM/Ebedplateastrengthmember

*Crossgirderunderthebearinghousing

*Boltholes

*Holdingdownboltsofslackening

*Chocks(frettingcracksandslackness)

11Turboblowermaintenanceduringoperationandchecktobemadeduringmaintenance

Importantpointsforturbochargermaintenance

Gascasingscalingandcorrosion

Watertreatmentisessential

Rotorunbalanceduetoimpropercleaningoftheairsideaswellasturbinesidewheels

Airsideimpellerusuallyhaveafilmofoilonthealuminumsurface

Gassideinservicecleaningnecessarytopreventdepositsfromcombustionproducts

Impropercleaningofairsideorturbinesidecouldresultinrotorunbalanceandsubsequentoperationalproblems

Bearingsandgearpumpsshouldberepairedatintervalsspecifiedbymaker

12Dailyroutinechecksrequiredonsteeringgearsystem.

*Oilquantityintheoiltankwithinrangeoflevelgauge

*Oiltemperature

*Pressuresofhydrauliccylinderscomparingwithnormaldata

*Abnormalnoisesandvibrationfrommovingpartsandmotorcouplings

*Oilleakagesfromtankcylindervalvesrampackingandpipejoints

*Abnormaloverheatingofcylinderstuffingboxandglandsmotorampler

13Immediateaction/causesofabnormalrelatedtosteeringgearsystem.

*Rudderdoesnotrespond

*Troubleofautopilotcontrol

*Controlthesteeringgearbythetrickwheelinthesteeringgearroom

*Failureinbufferspringlevelsandpins

*Continuetheoperationbychangingtostandbypumpunitafterremovingthebrokenpart

*Troublewithhydraulicpump(includinglinkmechanism)

*Checkthelinkmechanism(coupling)andelectricalpowertothepump

*Lightlypressthepumpsuctionvalveandcheckforoilsuction

*Troubleorabnormaloperationofvalves

*Obstaclesaroundthetillerandram

Rudderrateofturningspeedlow

Slowautopilotordering

Troubleandabnormaloperationofvalves

Externaloilleakage

14IfmainengineturbochargeroutofoperationduetorotorbladedamageasachiefengineerwhatwillbeyourplanandadvisetoallengineertoresumeseapassageASAP?

-Ifmainengineoneunitoutofoperationduetofuelpumprollerguidedamage(nosparepartonboard)whatprecautionwillyoutakeandyourplantoresumepassagewithoneunitcutoff.

-whatdomeanbybalancedengine(Ifpeakpressuredifferent)whatwillbeaffectonengine

-Ifoneunitpeakpressurehighcomparetootherunitwhatwillbeyouractiontobalancetheengine

-Howyouwilladjustfuelpumptimingforscrolltypefuelpump?

-Iftimingadvanceorretardedwhatwillbeaffectonengineexhausttemperatureandpeakpressure?

15Pilotonboardenginecannotstartfromcontrolroom.Asachiefengineerwhatwillbeyourfirstactionofplan.

-IfcannotstartenginefromenginelocalsidewhatisyourplanofactiontostartengineASAP?

-Whatareyougoingtocheckinenginemaneuveringsystem?

-Beforetakingbunkerwhatwillyourplanasachiefengineer?

-HowwillyoumaintainmainenginefuelsystemifAL/SLishighandalsowatercontentishigherside?Fuelandlubeoilpurifiercorrectoperationprocedureandasachiefengineeradvisetoallengineer?

-AuxiliaryenginerunningonheavyoilstartingdifficultiesonDOwhatisyouractiontoresolvestartingproblem?

-Boilersafetyandactionofplanifboilertubeleakageatsea.advisetoallengineerregardingimportanceofboilerwatertreatment?

-Oilywaterseparatoroperationandincineratoroperationandhowyougoingtofillupoilrecordbook/sulpherrecordbook?

-oilywaterrecordbookandincineratorcapacityhowwillcalculateinoilrecordbook?

-CMSitempreparationasachiefengineer

-Earthfaultfindingswhatisyourplanandhowyougoingtocheck?

-Generatorcircuitbreakercannotclosewhatisyouraction?

-Ifanymachinerymergerreading0whatisthecause?

16Howdoyouunderstandgoodhousekeeping?

Answer:-Safeandsecurestorageoflooseitems

propersecuringofdoorsetc

Goodmaintenanceoffittingsandfixtures

Adequateilluminationofworkortransitarea

Avoidanceofoverloadingelectricalcircuitespeciallyincabins

Clearandlegiblesignsoroperationalnotices

Properclearanceanddisposalofgarbageorwastematerialsorwasteoil

17whohasresponsibilityforprotectionofenvironment?

Answer:Everybodyonboardhastheresponsibilitytoprotecttheenvironment

18Whatwillyoudofromyourenginesidewhenshipgetsfirewhiledischargecargoinport?

Answer:-Lifesaving

Supportfirefightingteam

Prepareengineforleavingtheport

19Ifyouhavetoworkinsideofanenclosedspace,whatisnecessarybeforeyoucommenceyourwork?

-Workpermitfrommasterorchiefengineertoenterenclosedspace.

20Whatwillyoudotopreventspreadingoffire?

-shutoffventilatortoaffectedarea

-Switchoffelectricalpowersupplytoaffectedarea

21Howwouldyoudetecttheconditionofdieselengineduringoperation?

22Howwouldyoukeepdieselengineingoodoperationorder?

23Howmanytypesofindicatordiagramcanbeobtainedfromtwostrokedieselengine?

24WhatistheindicationthatwhitesmokefromM/Eexhaustfunnel?

-Itistheindicationthatfueloilisevaporatinginexhaustgasmanifoldandusedtohappenduringraisingenginespeedfromharborspeedtoseaspeed

-Intheotherhanditisindicationhighwatercontendinfueloilorthereiswaterleakageinoneofcombustionspace/exhaustvalve’

25whatistheindicationofblacksmokefromM/Eexhaustfunnel?

26HowwouldyouorganizeengineersandratingsforoverhaulingofM/Epistonpistonringandstuffingboxduringportstay?

27HowwouldyouprepareforM/EX-headsurvey?

28WhatdoyouunderstandPMS?

29DescribesafetyshutdownandalarmsforM/E

30howoftenwilltestsafetydevicesinE/R?

31WhatwillyoudoifM/Eremotecontrolwasfailedduringmaneuvering?

32Howmayfuelbecutoffacylinderwithoutstoppingtheengine?

33Howwouldyouconfirmaexhaustvalveofmainenginewasleaking?

34HowwouldyoucheckM/Eairstartingvalvewasleakage?

35WhatisthepurposeoftakingM/Ecrankshaftdeflection?

36IfashipgoesagroundwhatprecautionsmustbetakenaftervesselisafloatpriortooperationM/E?

37Whatexaminationcarriedoutbeforedismantlingmainbearing?

38Howaremainbearingremovefromthebearingpocket?

39WhatwouldyoudoifM/Eturbochargersurgingoccurred?

40whatisthecauseofturbochargersurging?

41Howwouldyouknownexhaustturboblowerairfilterrequiretobecleaned?

42whatdoyouunderstandaboutISMcode?

43whatdoyouunderstandaboutMARPOL?

44WhatdoyouunderstandaboutSOPEP?

45Explainbunkeringprocedure.

46Whatdrillwillyoudowithin24hoursbeforebunkering?

47whataretheusualcausesofstartingairvalveleakage?

Answer:leakageofstartairvalveisusuallybysluggish/seizesvalveaction.Preventingfastclosureofthevalveorthebydirtorforeignparticlesfromlodgingonthevalveseatandsopreventingthevalvefromfullyclosed

48whyitisneedtokeepthemainenginetobewarmenoughtoatemperatureof50to60degreeCelsius?

Answer:Toavoidcondensationinthecrankcaseandtobeabletogethightemperaturefortheaircompressedinthecylinderatthetimeofmaneuvering.

49Iftheautomaticstartingairvalveshouldfailduringmaneuveringtime.Whatprovisionismadesothatmaneuveringcanbecontinued?

Answer:Usuallydesignersprovideemergencyoperatinghandlesorhandwheelstoopenandclosethevalvemanually.Alljoinedengineershouldobserveit.

50Doyouthinkitisnecessarytorunthecoolingwaterpumpandlubeoilpumpwhenyouaregoingtocheckpiston.pistonringsandcylinderlinersthroughinspectionpeepholes?

Answer:Yesitisagoodpracticetoruncoolingwaterpumpandlubeoilpumpwhentocheckpiston,pistonringsandcylinderthroughtheinspectionpeepholesbecauseitcanbeobservedclearlyifthereisanyleakageofwateroroilfromcylinderlinerorpiston.

51IfyouhaveexperiencewithMAN-B&WMCengines,whatwillhappentothefuelinjectionpumpwhenreversingrollerguideforparticularinjectionpumpdoesnotmovetotherequiredposition?

Answer:Thesafetydevicewillactivatedandfuelpumprackwillberemainedinzeropositionandnofueloilwillbeinjectedfromthatpump

52Whatarethecausesofscavengefirofatwostroketypemainengine?

Answer:Accumulationofsludgeandfueloilinscavengeairspaceandconsiderableblowoutfromscavengeairportsofcylinderlinerorliners

53Whatwillyoupreventoccurringofscavengefire?

Answer:a.Ensurescavengesairspacedrainvalveisslightlyopenedduringoperationofengineandcheckthedrainisnotblocked

b.Openthedrainvalveandblowoffmomentarilyonceineverywatchtopreventcloggingofscavengedrainline

c.Cleanedthescavengeairspaceanddrainpipeandvalveatregularintervals

d.Maintainfuelinjectionvalves,pistonringsandcylinderlinersatregularintervalsandinspectionpistons,pistonringsandcylinderlinersthroughinspectionholesregularlytod3cidetheconditionofrespectiveparts

e.cleanedturbochargerregularly

54Howcanyouknowthatscavengefireoccursinyourengine?

Answer:a.theriseofexhaustgastemperaturefromthecylinderaffectedbythefire

b.theenginespeeddrops

c.turbochargermaysurge

d.exhaustgascolorfromfunnelwillbeblack

e.scavengeairtemperaturerise

55Whatkindofactionwillyoutakeimmediatelywhenyouknowthatscavengefiretakesplace?

Answer:a.reducesenginespeedtoslow,informbridgeandrequestforstoppingofmainengine

b.ifpermittedstopengineandstopauxiliaryblower

c.checkscavengeairtemperaturewithlocalthermometerandiftemperatureexceed80degreeCelsiususescavengefireextinguishsystem.Iflessthan80degreeCelsiuscanopenthewindowwithgreatprecautionandextinguishfirewithfireextinguisherforoilfire.

56Whateffectsdoesafterburninghaveonanengine?

A.Createshighexhaustgastemperatureanddropinmaximumc