orals july

8/14/2019 Orals July

1/25

Navin Kumar

22july2013 FRESHER

external: Vishweswaran

Internal: Gopikrishna

Purifier efficiency affecting factors

fire plan n its location

wt wil b along wd fire control plan in gangway

class A bulkhead,hw to test it

wt s technical file

wt is bdn n wt al details cn get from dt

diff bet rta n rtflex

low exp high exp foam ratio

wt wil u chec aftr btm end brg is tightened during overhaul of generator

cold blr starting precautions

diff bet primary n secondary air in burner

honing

scuffing

bore polishing

generator synchronising factors hw to ensure it

bulwark

sheer strake

types of t/C

y pulse not used in m/e

diff bet fuse n circuit breaker

fuel pp leak how to find out

wt wil u ensure in E/R before putting it in ums

crankshaft deflection y it s taken

m/e shutdown trips

bow thruster in high or low voltage?

low spr air pres effects

iapp cert wu issues it

shakers effect

risk assessment

c/c inspection in generator

types of motor starter

star delta starting

bunker samples hw many

orb retained onboard for hw many yrs

wt is d min time interval for writing tank status in orb

foam volume coverage in E/R

Hw much of depth fr i min(foam)
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2/25

wateva ive remembered ive updated...

RESULT : fn 6

good luc :)

Sidhikh Bashaoral date 22nd julyexternal: vishveshwaraninternal: gopi krishnafun4b:engine specificationwhat is heat balance?in what conditions will main engine shut down

m/e safety devicesif oil mist detector alarm comes, you hav confirmed everything in engine is normal. youroil mist detector is defective its filter damaged and you have no spare what action u lltake?what are the interlocks in main engine?working of fuel pump and types? what is vit?why exh temp at t/c inlet is higher than exh temp at unit?what is e/r temp, temp at inlet of t/c blower and at outlet?why air cooler is fitted?what is ignition delay?

what is the pressure of fuel during atomisation?fun5:what is reverse power relay, why it is fitted, what is the function of relay?how reverse power trip occurs? what is under voltage trip?paralleling of generators?what r the conditions to parallel conditions?how ll u adjust voltage, frequency? working of synchroscope?what is the difference between fuse and circuit breaker?how ll u do meggar test? what r the safety precautions before taking meggar test?what is the minimum allowed resistance in insulation test for any motor?what is continuity test? what is minimum voltage in a diode?how ll u check condition of battery? how u know charged or fully charged? what is the

specific gravity of charged lead acid battery? and sp. gravity at dicharged state?what is the temperature of electrolyte? what is the temperature battery room?what are the safeties in battery room?fun6:in UMS ship jacketed fuel line between fuel pump and injector has a pin hole leakage,how u ll find? will u close fuel oil leak off tank? whr the oil goes from leak off tank ifleak off valve opened?how ll u clean a cochran smoketube boiler bottom water space whr sediments are
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3/25

settled above the furnace?blow down procedure? why opening sea water valve first? why blowdown valve crackopen during blowdown?what is tool box stocking?(that is tool box meeting)then INTERNAL: GOPI KRISHNA

what is transformer? principle? working? diff btwn step up and step down transformer?how ll u find a step up transformer by seeing?what are safeties in compressor? and in airbottle? in between compressor and air bottlewhat are the euipments are thr?result: got fun 4b and 5..

Robert Thomas XavierCongrats... Can you tell me What is HeatBalance..? what he's looking for as a answer.?

Sidhikh BashaRobert Thomas Xavierheat balance is utilisation of heatenergy produced by engine. approximately he asked percentages of gasload, cooling system, exhaust gas. it is given in deven aranha engineperformances chapter first page.

Hari Haranwht u hav told for.......in between compressor and air bottlewhat are the euipments are thr?

D S Kumar MarineDude how to find step up transformer by seeing .. ?

Sidhikh BashaHari Harannon-return valve, moisture remover, fusibleplug

Sidhikh Bashain step up transformer, the secondary winding number ofturns will be more, hence large number of conductor available than theprimary coil hence voltage will higher at the output, that is step uptransformer. in step down number of turns in secondary coil is less hencevoltage produced is less.

D S Kumar Marine@ Sidhikh : that's ok Machi ... How will u find byseeing it physicaly da.

Sidhikh BashaD S Kumar Marineby comparing primary and secondarycoil turns. number of coils in secondary winding will be more than than theprimary coil in step up.
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4/25

Robert Thomas Xavierif oil mist detector alarm comes, you havconfirmed everything in engine is normal. your oil mist detector is defectiveits filter damaged and you have no spare what action u ll take? What hewants to know from our actions..?

what are the interlocks in main engine? Ans Plzz..

Sidhikh BashaRobert Thomas Xavierif such condition occurs, engineroom should not be in UMS, it should be manned. this is what he want tohear..

Sidhikh BashaRobert Thomas Xavierinterlocks are turning gearinterlock, running direction interlock, spring air low pressure, lube oil lowpressure, auxiliary blowers on auto.

Mohamed Arsath Irfanfresher:19th july 2013internal:gopi sirexrernal:chidambaram sirfunc:3b,4,6bilging

what is piston rings?why?how it seal?fresh water allowance?what is use of it?other name of load line marking?use of it?what r the safety in co2 bottles?what is bottle screw?what is cylinder liner ovality?how 2 checkif air compressor not compressing what is the problem?how to find leak in compressor v/v?boiler guage glass safety?what is the use of it?how much boiler safety valve testing pressure?one more testing press he ask notrembember

one unit of exhaust vlv high reason?what is reserve buoyancy?purpose of it?refer compressor short cycling?reasonsafety in co2 system?what is hunting gearwhat are all entries made in oil record book?what is stud extractor?
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5/25

groove clearance and usepiston removal procedure in generatorfunc:5single phasingearth lamp

preferential trip?any one machinery underthis?when emergen gen coming on load?reverse power trip?how it works?consequenceif insulation gone in motor how to give insulation?alhamthulillah func:5 cleared thank you guys all the best for u

Lyndon AmbrosseFresher:MMD Chennai:Date:17.07.2013External: Mr.ChithambaramInternal: Mr.ChoudaryFunc 3:1.Type of Vessel?2. M/E in my vessel?3. Diff btn p/v valve and p/v breaker?4. Mast Riser Use and Location?5. Percentage of Oxygen at the boiler outlet and in the IG line?6.EEBD Location and capacity?7.Fire Station Location and What all we find in it?

8.Pressure setting of Both Safety v/v in the boiler and at what pressure they operateand How it Set.9. Accumulation test in boiler10. Explain Rudder Drop ,Where to take , What type of bearing?11. Black Out Procedure and time taken for starting of Emergency Generator

Func 4b:1.What are Quills and where is it placed?2.Cylinder LO properties of crosshead Engine?3.Crankcase inspection and cross questions4.Water washing procedure for m/e t/c5.How to test leakage of Shell and Tube Heat Exchanger6.T/C surging and Causes7. What is Stuffing Box, where is it located, what is the use and more cross questions?

Func 5:1.Reverse power relay Diagram Drawn and Explained working and use2.Relays what are their purpose?
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6/25

3. What is the voltage in welding machine and in boiler electrodes

Func 6:1.Leakage Test of air comp valve before installing2.Refrigerator Short Cycling reason?

3.Refrigerator low refrigerant4. Piston Removal procedure in 4 stroke A/E after the cylinder head is removedI have posted what ever i could remember hope u guys find it useful and All the BestGuys

Result 3 & 5

Sivakumar Raj19.07.2013function-4b,5,6

surveyor :int gobikrishna,ext:chidambaram,fun5boiler high voltagereverse current tripif not activating what will happeniccpmicro growth corode prodection where it is usedinsulation test and instrument using to dofunction 4bpiston ring use

how it is sealinghow pisto ring being close with liner alwayshunting gear , floating levertypes of steering gearcompressor safetiescrankcase checkingtappet clearance and importance and if less what will happenfunction 6plate type heat exchanger cleaning

auxiliary pistons removalfreshwater generator vaccum test

production less reasonsea chest filter cleaning

function 5 cleared

Aravindh Jayaraman
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7/25

Mmd ChennaiFresherFunction 5:Instrincally safe circuit and hw it s made safe....wat s earth fault... How it is measured.. working of same ...

Motor nt starting reasons...Single phasing...

Air gap in reasons..Wat happens if it reduces.. causes of reducing..Sequential start .... & stop...Msb safeties...Battery room safeties..How battery can be found as full charged or nt ... Wat s their s.g at full charge halfcharge and dead battery...Fun 4b & 6:Boiler firing in sequenceSafeties in boilerBlow thru procedure fa gauge glass in boiler..Safeties in gauge glass...If one gauge glass is broken hw to change it..Wat is indicator card hw it is measured.... Some cross ques.Exh temp. Of one unit rises reasons causesType of fuel pump in my ship..Wat is use of spill v/vReversing methodsReversing in ur ship...

What is lost motionExh v/v working... What happens if spring air is low...Some cross ques...Function 3:Camber,tumble home , wat s collision b/h water tight b/h and its differences... Somecross ques.Co2 fixed extinguishing

And some cross quesY bursting disc in co2 bottleTypes of extinguishers in e/rHw foam is working and it's content

Some cross ques.Types of ship w.r.t to oil tankers(like type A,B,C) and cross ques.safeties in oil tankerWat is high velocity vent and mast riser some cross ques... Hw it is working ...sorry guys ...THAT'S ALL I REMEMBER....Result .... Cleared function 5 & 6


8/25

Dhilipan KdFirst attempt-18.07.2013

function 3,4b&6what is collision bulkhead,types.

water tight door, types.center girderdead weight.fixed fire fighting system in ur ship.what type of extinguisher used in accommodation.explain marpol annex6.how will u come to know heating coil in any tank leaking, steps after that.what are ME safety trips.if ME LO pump stops, what will happen.steering gear safeties.bumping clearance.what is ISM, what are the safeties coming under that.if scavenge temp high, what will happen.how oil mist detector working.if LO to piston stops, what will happen.

at lastSurveyor: hav u prepared fun 5me : no sir.surveyor : ok come next time

Hemanath Kumar18.07.2013examiner.. gopi krishna nd other fellow not sure of his name...appeared for func 3,4,5function 4:1.type of ship u sailed2.what is the firing order of ur engine?3. what is the significance for keeping firing order?4. cylinder oil properties5. what is TBN nd why it is so?6. air compressor safties7. main engine safties8. oil mist detector alarm wat to do?(he stopped me in the middle nd proceeded tonext)9.bumping clearance nd many question regarding air copmressor10.purpose of flywheel engines11. working principle of motor
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9/25

func 3:1. what are new things in Annex 6 ?2. what all extinguisher u had on ship?3. draw DCP diagram and what all r the contents in DCP?

4.stringer plate5.breast hook6.TPC7.some definitions from naval arc i dnt remeber..8. CAS and ISM .. frm safety subject

func 5:1.types of voltage2.alternator safties3. how wil u check insulation resistance4. how will u do continunity test5. draw both diagram of (question 3 and 4)6.steering gear safties electrical7 generator safties?8. cross question frm safty trip in generator lik how reverse power trip9. transformer principle and definition10.earthing system of ship and some cross questions11.brushless alternator diagram and explanation

thats it ppl.. i do remeber nly this much..result cleared function 4...

thank you all.. nd all the best guys

Dinesh Kumar G SFresher:MMD Chennai:Date:17.07.2013External: Mr.ChithambaramInternal: Mr.Choudary

F3:1. No.of ballast tanks in your last ship. What are the other means of ballasting in yourship.

Ans expected..Fore peak, Aft peak & one cargo hold.(My last ship was a bulk carrier)2. What is TPC?3. What is bilging?4. Why we are doing ballasting?5. Why we are change over ballasting?
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10/25

6. What are the methods of ballasting?7: What is the advantage of using CO2 Extinguisher for electrical fire rather than drypowder extinguisher?8. How the anchor chain is secured inside the chain locker.9. What is reserve buoyancy?

Fn 4B:1. How to water wash ME T/C blower & turbine sides. procedure2 .One unit is showing high exhaust temp. reason.3. What is accumulation pressure in boiler .How to check.4. Compressor safeties.5. What is short cycling in refrigerator.

Fn 51.What is the sequence after black out.2.What is single phasing & how to check.3.What is short ckt & how to check it.4.Motor is not starting, when we start it. What are the checks to be carried out.5.how much voltage in welding machine.6. What is reverse power. If reverse power relay trip is not actuated on its own. What isits consequences.Fn 6:1. A/E piston removal procedure after removing cylinder head.2. Crank case inspection3. A/E connecting rod bolts damages reasons.4. Heat exchanger(tube type & plate type cleaning method).Reason for cleaning. Howto start cleaning plate type heat exchangers.

Result: All four functions not cleared.

Varadarajan Parthasarathyoral date 23rd julyengine bore and strokeemergency fire pump regulationsco2 room maintenance and cross questionspanting and poundinganchor securing...wat is the name of other end of anchor chain and how is it held fastto chain lockerstringer,floor,checks to be made for deck foam system and maintenance,foam sample testingfrequencymarpol annexes to name,describe chapter 11 solaswat is the principle behind vitwat is surging,its consequences and how to avoidmain engine trips alarms and shut down
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11/25

crank case inspectiontypes of lubricationhow cross head is lubricated and wat type of lubricationlubrication system in main engineomd alarm comes...wats ur course of action

msb safetyreverse power wat,why,how and consequencefunction of avrpower factordiffference between true power and apparent power..wat is reactive powerboiler water treatment chemicalsprinciple of fresh water generatorpurifier bowl leaking....why and solutiontapet clearance..why..how to know which unit to take and wen...engine must be hot orcoldwat is net tonnage gross tonnagethats all i remembergot 4b and 6best of luck and thanks for all ur help

Aravin Takshan24th july 13internal: Gopi krishnanexternal: don't know

all questions r asked only by external

appeared: 3,4b,5

1. type of ship:2. specification of ship,3. your cargo oil pump type,4. COPT operation , wat does governor do's in tat,5. Where yo can find emergency stop for cargo pumps,6. oil tanker regulation,7. pumping out pump room bilge,8. fire fighting system E/R on DECK9. Expansion foam ration, foam solution? ,

4b1. Engine specification2. Cylinder head mountings3. Indicator diagram4. How to take compression pr & peak pr- value of both in ur engine5. Starting air value leakage how ll yo come to know?
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12/25

Function:5

1. MSB safeties - MSB insulation value in msb2. single phasing3. Emergency generator starting procedure.4. In emergency wat all ll get power , from emergency generator & emergency batteries5. Earth fault-..Happy with Function:5

Senthilvel Tamilarasan22/07/2013Internal : GopikrishnanExt : Visuvavarathan

Fun 3:OWS exceed 15 ppm what will happenIn what are condition u write the oil record book, if no transfer of oil how long period u have towrite the ORB ( ans : weekly once write the tank status)How long a oil record has to be on board once it made a last entryGarbage record to be onboard since from last entryWt is garboard strake , sheer strake , cable lifter,

Air vent of F/O tank , and dimensions , if its possible of out side water to enter the F/O tankthrough the air ventWt is SOPEP ? explain? If ur in US water a barge came u find oil trace near ur ship wt are theaction to be taken as per SOPEPCan u fire incinerater in port? Can u burn plastics in it ? He say that u can burn plastic with

another one combination ? what is that ?What is ur IMO no: if the IMO no can able to give to other ship if ur ship get scrap ?

Fun 4bMain engine model ? safety in M/E?To get a good purified oil using purifier what are the thing u have to do?Stern tube L/O cooling ? how it is done ?Surging? how it is happen ?What is mono and composite piston ? need of piston skrit ?Main engine safety ? Thrust bearing , JCW and stern tube High temp alarmNeed of piston skirt in the engine

What are the parameter consider regarding L/O sample?For a L/O when considering M/E and G/E what are the different?Explain increase and decrease of TBN and viscosity index after a long usage of oil ? when it haschange ?Need of clearance in the piston rings

Fun 5Single phasing ? during single phasing motor can start

orals july

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