What's the diff bet a ton and tonnage?
ton--- unit of weight... EX: this cargo weight is 10 ton,
tonnage – unit of volume.... in case of grt its specifying complete volume of enclosed spaces and in case of nrt volume of cago spaces ...
why emergency bilge suction is BELL MOUTHED?
WHAT R THE diff betn INDICATED PRESSURE, MAX. PRESSURE, MEAN EFF. PRESSURE.
HOW THEY CAN BE FOUND?
WHY WE DONT TAKE INDICATOR DIAGRAMS FOR 4 STROKE ENGINES?
HOW to test a FUSE -apart from multimeter -MUMBAI
WHAT IS THE DIFF betn stiffeners of collision BKHD and normal BKHD
indicated pressure cant be compared wit t latter terms lik mip and mep ..... and for t seconnd wat is emergency bilge suction i ve heard only emergency bilge injection ....???
indicator diagrams are not taken for 4 st cuz its not possible to obtain a stabilized graph ... cuz of immediate fluctuations of press as both the ports are closer ....
watz the special arrangement in the fuel oil system if the main
engine is always working on fuel oil 03/12/2007 k@Vi SaYs
u r seeing anyone of the cylinder exhaust temp. in local
fluctuating when the main engine on full rpm..........
watz ur immediate first step?
Collision bulkhead stiff distance is 60cm and others r 75cm ..
main engine fuel oil system
if the main engine is always on fuel oil(h.o.), a recirculation line is provided back from the fuel pump in to the mixing column, or to the service tank, and specific capacity heaters are always heating the oil which is being circulated in the line....that’s how you can manage to keep main engines on fuel oil always....
what r the main things ti be said to surveyor if he asks
" how will u ovhl a pump- CF & +ve displ "
what is " TLV'
TYPES OF HAMMERS ?
is it PEEN OR PEIN? well its ball peen hammer............
these were asked to my frenz in KOLKATTA
U HAVE SEEN JCFW EXPN TK overflowing?
what r the reasons?
WHY PCFW EXPN TK IS AT THE BOTTOM
unlike jcfw expn tk at the top.?
THE MAIN ENGINE JACKET WATER EXPANSION TANK SERVES 3 MAIN PURPOSES....
1. IT PROVIDES A POSITIVE HEAD ON THE JACKET WATER PUMP
2. IT PROVIDES MAKE UP WATER FOR THE LOST WATER IN THE SYSTEM
3. IT PROVIDES FOR THE EXPANSION AND COOLING OF WATER WHICH IS COMING OUT OF THE SYSTEM AT ABOUT 85-90 DEG CEL.
THE PISTON COOLING WATER OUTLET IS KEPT AT A MAXIMUM OF 65 DEG CEL(SULZER MANUFACTURER RECOMMENDATIONS....
IF WE PROVIDE AN EXPANSION TANK FOR PISTON COOLING,THE WEIGHT OF THE MOVING PISTON INCREASES,BEACAUSE OF THE AVAILABLE HEAD ON THE PUMP,OR THE WATER FILLED PISTON....
WE NEED TO LOWER THE WEIGHT OF THE WORKING PISTON, RATHER THAN INCREASE IT...BESIDES,THERE IS REALLY NO NEED OF MAKE UP WATER FOR THE SYSTEM AND,BEING A DOUBLE BOTTOM TANK,IT MAY PROVIDE FOR EXPANSION OF THE LIQUID AS WELL...
Famous questions
How will u prepare for a iopp survey
why loadline markings on both sides of the ship
wht r the certificates the ship should carry, validity periods ./. 16 Jan Arpit.....
its " Ball Pein" hammer.
maximum pressure or peak pressure as it is commonly called is the max pressure inside the cylinder normally in generators we used to take peak pressures
in an engine cylinder the pressure will not be constant it will be varying as indicated in an indicator diagram. to make calculation easier if we consider a constant pressure acts on piston througout the cycle which produces same amount of power as a varying pressure produces then this constant pressure is called mean effective pressure it is of two types
indicated m.e.p and brake m.e.p
it can be found from an indicator diagram using a planimeter .
ton is a unit for measuring refrigeration effect
tonnage is measure of displacement like dwt
tonne is a unit for measuring weight
questions
if a main engine single unit exh temp is fluctuating take indicator card immediately for that unit to know what is causing it ,from the card we will come to know whether it is due to exhaust v/v burnout or due to late injection or any trouble with fuel injector jcfw expansion tank overflows due to
1.crack in cylinder liner
2.filling valve kept open
qst asked in Kolkata: 1. explain d complete L.O system and pressure at every point of the M/E u have worked on
2. Does d M/E L.O sump have any compartments, n if yes how many n Y?
HEN VSL IS IN PORT, V R CIRCULATING FUEL FOR M/E BUT Y FLOWMETER IS NOT TURNING.
HOW FO CICULATED, ITS ABT CONTRUCTION DEATILS OF FUEL INJECTOR.
WHT IS VIT,
HOW SULZER FUEL PUMP IS WORKING.
Y WE NEED SEPERATE CAMSHAFT LO SYSTEM FOR M/E.
WHT IS THE MAX PERM. WEAR RING CLEARANCE.
HOW AIR DRIER IS WORKING, Y V USE 7KG AIR FOR CONTROL SYSTEMS.
WHT IS FLAME EYE IN BOILER, HOW IT IS WORKING.
WHT IS THE USE OF RELIEF VALVE IN FWG, Y V NEED TWO BOILER SIDE BOLWDOWN VALVES.
IF ONE OF M/E UNIT IS FIRING, WHICH ALARM U LL GET.
WHT IS K VALVE IN T/C. IF K IS MORE N LESS --- WHT IS THE PROBLEM.
HOW LL U TEST AIR STARTING VALVES, 1 WHEN ENGINE IS RUNNIG N 2 NOT RUNING
function 3:-
1) What are the routine tests and maintenance on high expansion foam system?
2) What are the preparations before the ship going for dry-docking?
3) Your have just joined a ship then how will you identify that the ship is following the regulations of marpol annexe 1?
4) What are the entries made in Oil record book?
function 5:-
1) Safeties on main switchboard
2) Safeties and precautions on portable electrical equipments
3) what is the routine maintenance on the starter of main air compressor which is of automatic start stop type?
I have failed in these two functions. I couldn't answer him 1st question from function 3 and 3rd question from function 5.
All other questions i have answered satisfactorily.
But the fellow failed me bcoz of these 2 ques.
parts of xhead....
how lubrication achieved in xhead.....
power calculation for main engine...
draw pv curve for diesel , otto, dual, carnot cycle..............
how to calculate intermediate stage pressure in multi stage compressor....
which type of bearing used for l.o. pump and how lubrication of that bearing achieved..
how to overhaul gear pump n centrifual pump.....
where piston palm will be connected... ans xhead pin
material of fusible plug............... ans antimony
how to take out connecting road....
draw cross sectional view of stiffner.....
clearances in cross head n their values,......
wat is specific fuel consumption n its unit n approximate value.....
wat is specific l.o. consumption n its unit approximate value .............
Q:how the blades are fitted to turbocharger rotor? what r the type of turbine blades .
Q:why the ph valve in condensate system differ from boiler.
ans : as tem increases ph value decreases so to compensate we maintain high ph value
Q:wat is lift of relief valve in fuel system.
Q:how to maintain water tight integrity in hatch covers.
q:what is crankcase explosion? explain everything about it?
c/c mist detector working? effects of c/c explosion?
q:ni-cd battery? adv and dis adv? maintenance? working?
q:portable fire extin. soda acid type? constituents, working and construction?
q:tappet clearance? how to take? why?
q:valves types? ballast line and valves used in that line?
q:propeller drop, rudder drop?
q:why unloader required for comp.?
q:how unloader works? what is it?
q:switch board safety? megger?
Q: HOW T/C BLADES R FIXED?
A: THIS METHOD IS FILT TREE METHOD. ITS NOT RIGID, IF U REMOVE VIBRATION DAMBEN WIRE U CAN REMOVE THESE BALDES. FOR MORE INFORMATION REFER REEDS.
wat is lift of relief valve in fuel system
AS FAR AS I AM CONCERNED THR IS NO RELIEF V/V IN THE FUEL SYSTEM EXCEPT THE ONE ON THE SUPPLY N CIRCULATING PUMPS. BUT V LL HAVE A PR REGULATING VALVE IN THE FUEL SYSTEM, WHICH IS CONNECTED BETWEEN INLET MANIFOLD N RETURN MANIFOLD. ONE MORE THING U LL HAVE A NEEDLE VALVE N SLIDE VALVE IN FUEL INJECTOR.
where in E/R are thermocouples and thermistors used.....
what is balancing of rudder and how is it done
is a bulwark different from scuppers and drains and if so how and if not how....
what would you do if the viscotherm on board is not working(bypassing it and using temp control is the answer but how wld u set the temperature.....u are not supposed to approximate the temperature .. is there some means by which u can accurately determine the temperature..)
if bridge reports funnel sparking what is the action to be taken.....
there's a difference in plugging a leaking tube of a water tube boiler and a smoke tube boiler...do u know what??
the flywheel markings of an auxiliary engine cannot be read.. state how would u mark the markings
what are the advantages of an inverse cam over an ordinary cam
safeties of a gaugle glass, safety for steam side of a gauge glass
short cycling of refer compressor...causes and how to rectify.
generator not taking load.. what tools will you use to to check the fault..
how to take the crosshead bearing clearance of a main engine
why 4 stroke bottom end bolts get damaged
what is a bridge gauge..how do u use it
what is the speed of your purifier motor and bowl..how is the purifier driven..what are the reasons for it not picking speed
why vent valve is given on boiler
what is the reversing principle
why do we need boiler water treatment"
"how corrosion takes place in a boiler
FUNCTION 4
What is accumulation test? why is it performed after setting of safety valves?
What is value of safety valve of boiler?Which is higher saftey valve for aux boiler or ege??
What is principle of centrifugal pumps ?? why centrifugal pumps can not pump out air??
what are the priming methods ??
priming ogf boiler????
safety of gauge glass??
manual desludging of purifier??
vent in boiler why??/
mountings of the boiler??
safety of air compressor
safety of main engine??
difference of the scavenging in 2 stroke and 4 stroke ??
Diffrence of fuel pump in 2 and 4 stroke
difference between 2 and 4 stoke??
difference between long and super long stoke
valve timing diagram??
diagram of the gear pump??
specification of ur machinery??
cyl head arrangement of the 4 stroke (2 valves why 2 springs y)
no, of holes in injector
flash up of boiler
function of equalising line in the TEV??
burner blow back??/
why centrifugal pumps not used in the OWS?
ton--- unit of weight... EX: this cargo weight is 10 ton,
tonnage – unit of volume.... in case of grt its specifying complete volume of enclosed spaces and in case of nrt volume of cago spaces ...
why emergency bilge suction is BELL MOUTHED?
WHAT R THE diff betn INDICATED PRESSURE, MAX. PRESSURE, MEAN EFF. PRESSURE.
HOW THEY CAN BE FOUND?
WHY WE DONT TAKE INDICATOR DIAGRAMS FOR 4 STROKE ENGINES?
HOW to test a FUSE -apart from multimeter -MUMBAI
WHAT IS THE DIFF betn stiffeners of collision BKHD and normal BKHD
indicated pressure cant be compared wit t latter terms lik mip and mep ..... and for t seconnd wat is emergency bilge suction i ve heard only emergency bilge injection ....???
indicator diagrams are not taken for 4 st cuz its not possible to obtain a stabilized graph ... cuz of immediate fluctuations of press as both the ports are closer ....
watz the special arrangement in the fuel oil system if the main
engine is always working on fuel oil 03/12/2007 k@Vi SaYs
u r seeing anyone of the cylinder exhaust temp. in local
fluctuating when the main engine on full rpm..........
watz ur immediate first step?
Collision bulkhead stiff distance is 60cm and others r 75cm ..
main engine fuel oil system
if the main engine is always on fuel oil(h.o.), a recirculation line is provided back from the fuel pump in to the mixing column, or to the service tank, and specific capacity heaters are always heating the oil which is being circulated in the line....that’s how you can manage to keep main engines on fuel oil always....
what r the main things ti be said to surveyor if he asks
" how will u ovhl a pump- CF & +ve displ "
what is " TLV'
TYPES OF HAMMERS ?
is it PEEN OR PEIN? well its ball peen hammer............
these were asked to my frenz in KOLKATTA
U HAVE SEEN JCFW EXPN TK overflowing?
what r the reasons?
WHY PCFW EXPN TK IS AT THE BOTTOM
unlike jcfw expn tk at the top.?
THE MAIN ENGINE JACKET WATER EXPANSION TANK SERVES 3 MAIN PURPOSES....
1. IT PROVIDES A POSITIVE HEAD ON THE JACKET WATER PUMP
2. IT PROVIDES MAKE UP WATER FOR THE LOST WATER IN THE SYSTEM
3. IT PROVIDES FOR THE EXPANSION AND COOLING OF WATER WHICH IS COMING OUT OF THE SYSTEM AT ABOUT 85-90 DEG CEL.
THE PISTON COOLING WATER OUTLET IS KEPT AT A MAXIMUM OF 65 DEG CEL(SULZER MANUFACTURER RECOMMENDATIONS....
IF WE PROVIDE AN EXPANSION TANK FOR PISTON COOLING,THE WEIGHT OF THE MOVING PISTON INCREASES,BEACAUSE OF THE AVAILABLE HEAD ON THE PUMP,OR THE WATER FILLED PISTON....
WE NEED TO LOWER THE WEIGHT OF THE WORKING PISTON, RATHER THAN INCREASE IT...BESIDES,THERE IS REALLY NO NEED OF MAKE UP WATER FOR THE SYSTEM AND,BEING A DOUBLE BOTTOM TANK,IT MAY PROVIDE FOR EXPANSION OF THE LIQUID AS WELL...
Famous questions
How will u prepare for a iopp survey
why loadline markings on both sides of the ship
wht r the certificates the ship should carry, validity periods ./. 16 Jan Arpit.....
its " Ball Pein" hammer.
maximum pressure or peak pressure as it is commonly called is the max pressure inside the cylinder normally in generators we used to take peak pressures
in an engine cylinder the pressure will not be constant it will be varying as indicated in an indicator diagram. to make calculation easier if we consider a constant pressure acts on piston througout the cycle which produces same amount of power as a varying pressure produces then this constant pressure is called mean effective pressure it is of two types
indicated m.e.p and brake m.e.p
it can be found from an indicator diagram using a planimeter .
ton is a unit for measuring refrigeration effect
tonnage is measure of displacement like dwt
tonne is a unit for measuring weight
questions
if a main engine single unit exh temp is fluctuating take indicator card immediately for that unit to know what is causing it ,from the card we will come to know whether it is due to exhaust v/v burnout or due to late injection or any trouble with fuel injector jcfw expansion tank overflows due to
1.crack in cylinder liner
2.filling valve kept open
qst asked in Kolkata: 1. explain d complete L.O system and pressure at every point of the M/E u have worked on
2. Does d M/E L.O sump have any compartments, n if yes how many n Y?
HEN VSL IS IN PORT, V R CIRCULATING FUEL FOR M/E BUT Y FLOWMETER IS NOT TURNING.
HOW FO CICULATED, ITS ABT CONTRUCTION DEATILS OF FUEL INJECTOR.
WHT IS VIT,
HOW SULZER FUEL PUMP IS WORKING.
Y WE NEED SEPERATE CAMSHAFT LO SYSTEM FOR M/E.
WHT IS THE MAX PERM. WEAR RING CLEARANCE.
HOW AIR DRIER IS WORKING, Y V USE 7KG AIR FOR CONTROL SYSTEMS.
WHT IS FLAME EYE IN BOILER, HOW IT IS WORKING.
WHT IS THE USE OF RELIEF VALVE IN FWG, Y V NEED TWO BOILER SIDE BOLWDOWN VALVES.
IF ONE OF M/E UNIT IS FIRING, WHICH ALARM U LL GET.
WHT IS K VALVE IN T/C. IF K IS MORE N LESS --- WHT IS THE PROBLEM.
HOW LL U TEST AIR STARTING VALVES, 1 WHEN ENGINE IS RUNNIG N 2 NOT RUNING
function 3:-
1) What are the routine tests and maintenance on high expansion foam system?
2) What are the preparations before the ship going for dry-docking?
3) Your have just joined a ship then how will you identify that the ship is following the regulations of marpol annexe 1?
4) What are the entries made in Oil record book?
function 5:-
1) Safeties on main switchboard
2) Safeties and precautions on portable electrical equipments
3) what is the routine maintenance on the starter of main air compressor which is of automatic start stop type?
I have failed in these two functions. I couldn't answer him 1st question from function 3 and 3rd question from function 5.
All other questions i have answered satisfactorily.
But the fellow failed me bcoz of these 2 ques.
parts of xhead....
how lubrication achieved in xhead.....
power calculation for main engine...
draw pv curve for diesel , otto, dual, carnot cycle..............
how to calculate intermediate stage pressure in multi stage compressor....
which type of bearing used for l.o. pump and how lubrication of that bearing achieved..
how to overhaul gear pump n centrifual pump.....
where piston palm will be connected... ans xhead pin
material of fusible plug............... ans antimony
how to take out connecting road....
draw cross sectional view of stiffner.....
clearances in cross head n their values,......
wat is specific fuel consumption n its unit n approximate value.....
wat is specific l.o. consumption n its unit approximate value .............
Q:how the blades are fitted to turbocharger rotor? what r the type of turbine blades .
Q:why the ph valve in condensate system differ from boiler.
ans : as tem increases ph value decreases so to compensate we maintain high ph value
Q:wat is lift of relief valve in fuel system.
Q:how to maintain water tight integrity in hatch covers.
q:what is crankcase explosion? explain everything about it?
c/c mist detector working? effects of c/c explosion?
q:ni-cd battery? adv and dis adv? maintenance? working?
q:portable fire extin. soda acid type? constituents, working and construction?
q:tappet clearance? how to take? why?
q:valves types? ballast line and valves used in that line?
q:propeller drop, rudder drop?
q:why unloader required for comp.?
q:how unloader works? what is it?
q:switch board safety? megger?
Q: HOW T/C BLADES R FIXED?
A: THIS METHOD IS FILT TREE METHOD. ITS NOT RIGID, IF U REMOVE VIBRATION DAMBEN WIRE U CAN REMOVE THESE BALDES. FOR MORE INFORMATION REFER REEDS.
wat is lift of relief valve in fuel system
AS FAR AS I AM CONCERNED THR IS NO RELIEF V/V IN THE FUEL SYSTEM EXCEPT THE ONE ON THE SUPPLY N CIRCULATING PUMPS. BUT V LL HAVE A PR REGULATING VALVE IN THE FUEL SYSTEM, WHICH IS CONNECTED BETWEEN INLET MANIFOLD N RETURN MANIFOLD. ONE MORE THING U LL HAVE A NEEDLE VALVE N SLIDE VALVE IN FUEL INJECTOR.
where in E/R are thermocouples and thermistors used.....
what is balancing of rudder and how is it done
is a bulwark different from scuppers and drains and if so how and if not how....
what would you do if the viscotherm on board is not working(bypassing it and using temp control is the answer but how wld u set the temperature.....u are not supposed to approximate the temperature .. is there some means by which u can accurately determine the temperature..)
if bridge reports funnel sparking what is the action to be taken.....
there's a difference in plugging a leaking tube of a water tube boiler and a smoke tube boiler...do u know what??
the flywheel markings of an auxiliary engine cannot be read.. state how would u mark the markings
what are the advantages of an inverse cam over an ordinary cam
safeties of a gaugle glass, safety for steam side of a gauge glass
short cycling of refer compressor...causes and how to rectify.
generator not taking load.. what tools will you use to to check the fault..
how to take the crosshead bearing clearance of a main engine
why 4 stroke bottom end bolts get damaged
what is a bridge gauge..how do u use it
what is the speed of your purifier motor and bowl..how is the purifier driven..what are the reasons for it not picking speed
why vent valve is given on boiler
what is the reversing principle
why do we need boiler water treatment"
"how corrosion takes place in a boiler
FUNCTION 4
What is accumulation test? why is it performed after setting of safety valves?
What is value of safety valve of boiler?Which is higher saftey valve for aux boiler or ege??
What is principle of centrifugal pumps ?? why centrifugal pumps can not pump out air??
what are the priming methods ??
priming ogf boiler????
safety of gauge glass??
manual desludging of purifier??
vent in boiler why??/
mountings of the boiler??
safety of air compressor
safety of main engine??
difference of the scavenging in 2 stroke and 4 stroke ??
Diffrence of fuel pump in 2 and 4 stroke
difference between 2 and 4 stoke??
difference between long and super long stoke
valve timing diagram??
diagram of the gear pump??
specification of ur machinery??
cyl head arrangement of the 4 stroke (2 valves why 2 springs y)
no, of holes in injector
flash up of boiler
function of equalising line in the TEV??
burner blow back??/
why centrifugal pumps not used in the OWS?