轮机长和大管轮面试题目.docx

轮机长和大管轮面试题目.docx

《轮机长和大管轮面试题目.docx》由会员分享，可在线阅读，更多相关《轮机长和大管轮面试题目.docx（8页珍藏版）》请在冰豆网上搜索。

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

*Controlthesteeringgea