分享

【精品】轮机长和大管轮面试题目

 Tata97d2alb5fq 2016-10-05

Interview conducted for C/E&2/Ecandidate

1: What is the plant to ready for manoeuving and departureport?

*start the second generator and after allchecks, take it on load

*The third generator should be kept on standbycondition

*Essential steps to be noted: Turningengine indicator cocks parameters abnormal noise

*Check system FO service and settling tanksdiesel oil service tank air system LO system T/C CW system checking the fuelregulating gear & starting system

* slow turning the engine

*this must be carried out to prevent damagecaused by fluid in one of the cylinders and to check the reversing mechanism

*Before beginning the slow turning obtainpermission from the bridge

2 what items to be analysis onlube oil?

*Specificgravity viscosity flash point TAN(total acid number)SAN(strong acid number)alkalinity TBN( total base number) water content Conradson carbon ash insoluble

3 what cause of exhausttemperature rises in all cylinders?

* Increased scavenge air temperature owingto inadequate air cooler function

*Fouled air and gas passages

*Inadequate fuel oil cleaning or alertedcombustion characteristics of fuel

*wrong position of camshaft

4 what causes of highturbocharger speed?

*Fouled air filter(early stage of unloadingthe compressor)

*Fire (early stage) in the exhaust check immediately.

5 what causes of cylinderknocking?

*Fuel timing too far advanced

*fuel injector valve needle sticking atopen position

*Excessive carbon built up on the crown

*Broken exhaust valve

*Mechanical damage in the3 cylinder

6 what action to be taken ofcrankcase mist detector alarm (never cut out mist detector potentially dangerous)?

*Inform bridge and C/E

*Stay away from crankcases

*slowdown and stop

*start turning gear immediately for atleast 30 minutes to cool down

*Through investigation of mist detector crankcaseabnormality and moving parts required

7 what caused of scavenge fireand action taken?

*Inform bridge and C/E

*Do not stand near the relief valves

*slow down engine ensure that the auxiliaryblowers are off

*In case the fire persists stop the enginegradually to prevent risk of piston seizure

*Fire should be go off when all depositsburnt out

*keep turning the engine with cooling on toprevent seizure of moving parts

8 what action taken whencrankcase explosion? (Most of the cases engine will suddenly stop uponexplosion)

*Inform bridge and chief engineer

*evacuate the E/R

*Every safe effort to be made to turnengine by turning gear or slow turning for 30 minutes to prevent seizure ofmoving parts

*Thorough investigation required into thecause of the explosion before re starting

9 What will you do when boilerwater level was low during normal steaming condition?

*Fist start the standby feed water pump

*Second check and wash the local waterlevel gauge

*Third check any leakage on steam pipes orsafety valves

10 Turbo charger surging causesand preventive measures?

* T/C surging can be divided into threemain categories

* malfunction in the fuel system

*Rapid variations in the engine load

* Fuel system fuel injection system fuelline components fuel timing

*exhaust system valve exhaust passagethrough turbocharger and gas boiler

*scavenge air system

*Miscellaneous rapid changes in load andRPM governor

*Immediate action temporarily counteractedby blowing off

Reduce engine load by taking the T/C awayfrom the surging line

*Preventive measures regular maintenance ofitems mentioned above prevent load fluctuations during ballast voyage and badweather

*Periodical check of M/E bedplate a strengthmember

* Cross girder under the bearing housing

*Bolt holes

* Holding down bolts of slackening

*Chocks (fretting cracks and slackness)

11 Turbo blower maintenanceduring operation and check to be made during maintenance

Importantpoints for turbo charger maintenance

lGas casing scalingand corrosion

lWater treatment isessential

lRotor unbalance dueto improper cleaning of the air side as well as turbine side wheels

lAir side impellerusually have a film of oil on the aluminum surface

lGas side in servicecleaning necessary to prevent deposits from combustion products

lImproper cleaning ofair side or turbine side could result in rotor unbalance and subsequentoperational problems

lBearings and gearpumps should be repaired at intervals specified by maker

12 Daily routine checks required on steeringgear system.

* Oil quantity in the oil tank within range of levelgauge

*Oil temperature

*Pressures of hydraulic cylinders comparing withnormal data

* Abnormal noises and vibration from moving parts andmotor couplings

* Oil leakages from tank cylinder valves ram packingand pipe joints

* Abnormal overheating of cylinder stuffing box andglands motor ampler

13 Immediate action/causes of abnormalrelated to steering gear system.

* Rudder does not respond

* Trouble of auto pilot control

* Control the steering gear by the trick wheel in thesteering gear room

* Failure in buffer spring levels and pins

* Continue the operation by changing to stand by pumpunit after removing the broken part

* Trouble with hydraulic pump (including linkmechanism)

* Check the link mechanism (coupling) and electricalpower to the pump

* Lightly press the pump suction valve and check foroil suction

* Trouble or abnormal operation of valves

* Obstacles around the tiller and ram

Rudder rate of turning speed low

lSlow auto pilotordering

lTrouble and abnormaloperation of valves

lExternal oil leakage

14 If main engine turbocharger out of operation due torotor blade damage as a chief engineer what will be your plan and advise to allengineer to resume sea passage ASAP?

-If main engine one unit out of operation due to fuel pump roller guide damage (nospare part on board) what precaution will you take and your plan toresume passage with one unit cut off.

-what do mean by balanced engine ( If peak pressure different ) what will beaffect on engine

- If one unit peak pressure high compare to other unit what will be your actionto balance the engine

- How you will adjust fuel pump timing for scroll type fuel pump?

-If timing advance or retarded what will be affect on engine exhaust temperatureand peak pressure?

15 Pilot on board engine can not start from controlroom. As a chief engineer what will be your first action of plan.

- If can not start engine from engine local side what is your plan of action tostart engine ASAP?

- What are you going to check in engine maneuvering system?

- Before taking bunker what will your plan as a chiefengineer?

- How will you maintain main engine fuel system if AL/SL ishigh and also water content is higher side? Fuel and lube oil purifier correctoperation procedure and as a chief engineer advise to all engineer?

- Auxiliary engine running on heavy oil starting difficulties on DO what isyour action to resolve starting problem?

-Boiler safety and action of plan if boiler tube leakage at sea. advise to allengineer regarding importance of boiler water treatment?

-Oily water separator operation and incinerator operation and how you going tofill up oil record book/sulpher record book?

- oily water record book and incinerator capacity how will calculate in oilrecord book?

- CMS item preparation as a chief engineer

- Earth fault findings what is your plan and how you going to check?

- Generator circuit breaker can not close what is your action?

- If any machinery merger reading 0 what is the cause?

16 How do you understand good house keeping?

Answer: - Safe and secure storage of loose items

-proper securing ofdoors etc

-Good maintenance offittings and fixtures

-Adequateillumination of work or transit area

-Avoidance ofover loading electrical circuit especially in cabins

-Clear andlegible signs or operational notices

-Proper clearanceand disposal of garbage or waste materials or waste oil

17 who has responsibility for protection ofenvironment?

Answer: Every body on board has the responsibility to protect the environment

18 What will you do from your engine side when shipgets fire while discharge cargo in port?

Answer : - Life saving

-Support firefighting team

-Prepare engine forleaving the port

19 If you have to work in side of an enclosed space, what isnecessary before you commence your work?

- Work permit from master or chief engineer to enter enclosed space.

20 What will you do to prevent spreading of fire?

- shut off ventilator to affected area

- Switch off electrical power supply to affected area

21 How would you detect the condition of dieselengine during operation?

22 How would you keep diesel engine in good operation order?

23 How many types of indicator diagram can be obtained from two stroke dieselengine?

24 What is the indication that white smokefrom M/E exhaust funnel?

- It is the indication that fuel oil is evaporating in exhaust gas manifold andused to happen during raising engine speed from harbor speed to sea speed

- In the other hand it is indication high water contend in fuel oil or there iswater leakage in one of combustion space/exhaust valve’

25 what is the indication of black smoke from M/Eexhaust funnel?

26 How would you organize engineers and ratings for overhauling of M/E pistonpiston ring and stuffing box during port stay?

27 How would you prepare for M/E X-head survey?

28 What do you understand PMS?

29 Describe safety shut down and alarms for M/E

30 how often will test safety devices in E/R?

31 What will you do ifM/E remote control was failed during maneuvering?

32 How may fuel becut off a cylinder without stopping the engine?

33 How wouldyou confirm a exhaust valve of main engine was leaking?

34 How wouldyou check M/E air starting valve was leakage?

35 Whatis the purpose of taking M/E crankshaft deflection?

36 If a ship goes agroundwhat precautions must be taken after vessel is afloat prior to operation M/E?

37 Whatexamination carried out before dismantling main bearing?

38 How aremain bearing remove from the bearing pocket?

39 What wouldyou do if M/E turbocharger surging occurred?

40 what is the cause ofturbocharger surging?

41 How would you known exhaustturbo blower air filter require to be cleaned?

42 what do you understand aboutISM code?

43 what do you understand aboutMARPOL?

44 What do you understand aboutSOPEP?

45 Explain bunkering procedure.

46 What drill will you do within24 hours before bunkering?

47 what are the usual causes ofstarting air valve leakage?

Answer: leakageof start air valve is usually by sluggish /seizes valve action. Preventing fastclosure of the valve or the by dirt or foreign particles from lodging on thevalve seat and so preventing the valve from fully closed

48 why it is need to keep themain engine to be warm enough to a temperature of 50 to 60 degree Celsius?

Answer: To avoid condensation in thecrankcase and to be able to get high temperature for the air compressed in thecylinder at the time of maneuvering.

49 If the automatic starting airvalve should fail during maneuvering time. What provision is made so thatmaneuvering can be continued?

Answer: Usually designers provideemergency operating handles or hand wheels to open and close the valve manually.All joined engineer should observe it.

50 Do you think it is necessaryto run the cooling water pump and lube oil pump when you are going to checkpiston .piston rings and cylinder liners through inspection peep holes?

Answer: Yes it is a good practice torun cooling water pump and lube oil pump when to check piston, piston rings andcylinder through the inspection peep holes because it can be observed clearlyif there is any leakage of water or oil from cylinder liner or piston.

51 If you have experience withMAN-B&W MC engines, what will happen to the fuel injection pump whenreversing roller guide for particular injection pump does not move to the requiredposition?

Answer: The safety device willactivated and fuel pump rack will be remained in zero position and no fuel oilwill be injected from that pump

52What are the causes of scavenge fir of a two stroke type main engine?

Answer:Accumulation of sludge and fuel oil in scavenge air space and considerable blowout from scavenge air ports of cylinder liner or liners

53What will you prevent occurring of scavenge fire?

Answer: a.Ensure scavenges air space drain valve is slightly opened during operation ofengine and check the drain is not blocked

b. Open thedrain valve and blow off momentarily once in every watch to prevent clogging ofscavenge drain line

c. Cleaned the scavengeair space and drain pipe and valve at regular intervals

d. Maintainfuel injection valves, piston rings and cylinder liners at regular intervalsand inspection pistons, piston rings and cylinder liners through inspectionholes regularly to d3cide the condition of respective parts

e. cleanedturbocharger regularly

54How can you know that scavenge fire occurs in your engine?

Answer: a.the rise of exhaust gas temperature from the cylinder affected by the fire

b. the engine speed drops

c. turbocharger may surge

d. exhaust gas color from funnel will be black

e. scavenge air temperature rise

55 What kind of action will you takeimmediately when you know that scavenge fire takes place?

Answer: a. reduces engine speed to slow, inform bridgeand request for stopping of main engine

b. if permitted stop engine and stop auxiliary blower

c. check scavenge air temperature with localthermometer and if temperature exceed 80 degree Celsius use scavenge fireextinguish system. If less than 80 degree Celsius can open the window withgreat precaution and extinguish fire with fire extinguisher for oil fire.

56 What effects does afterburning have on anengine?

A .Creates high exhaust gas temperature anddrop in maximum combustion pressure and damage to exhaust valves and risk of scavengefires

57 What kind of spare parts will you checkfor main engine after you have taken over the duty from signing off firstengineer?

Answer: Spare piston, piston rod, cylinder head,cylinder liner, cross head bearing, cylinder head tightening studs, highpressure pipes for fuel injectors, fuel injectors, thrust bearings, connectingrod big end bearings, exhaust valves, cylinder starting air valves, indicator cocks,cylinder head gaskets, piston rings and special tools for overhaul and measuretools main engine etc.

58 How will you organize engineers andratings for overhauling of main engine piston and piston rings and stuffing boxduring port stay of one day?

Answer: a. Fourth engineer on top partsdismantling

b. Third engineer in crankcase

c. Overtime ratings helping fourth engineer andthird engineer

d. Second engineer supervising fourth and thirdengineer

59 What will you do if one of cylinderstarting air valves of main engine was leaking during maneuvering time andbridge could not give you to stop main engine and change the valves with goodspare?

Answer: Cut out fuel to defective cylinder andcarry out maneuvering with great care and infirm chief engineer about the eventand follow of there is special instruction

60 What is to be very careful when you aremaneuvering the vessel from emergency maneuvering stand?

Answer: Main engine RPM should becareful watched not to run move than rated RPM because governor is cut-cut andcontrolled by fuel handle

6

    本站是提供个人知识管理的网络存储空间,所有内容均由用户发布,不代表本站观点。请注意甄别内容中的联系方式、诱导购买等信息,谨防诈骗。如发现有害或侵权内容,请点击一键举报。
    转藏 分享 献花(0

    0条评论

    发表

    请遵守用户 评论公约

    类似文章 更多