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Both/and Neitheror Either/or Both/or
water in the fuel oil excessive cycling high fuel oil pressure improper burner maintenance
to inspect if the cylinder has the water leakage to expel out the residual water /gas /oil from the cylinder to check if fuel supply is normal A and B
carbonization of oils from the combustion chambers emulsions of lube oil and water coagulation of unburned fuel below the piston rings all of the above
type of fuel transfer pump aboard temperature of the fuel oil being received size of the fuel storage tanks ashore distance from the fuel oil storage tanks ashore
regulate the fuel supply maintain a constant fuel viscosity at the fuel valves maintain efficient cooling alter the fuel density
cold corrosion of the nozzles fuel viscosity for better atomization carbon accumulation on the nozzles fuel detonation in the cylinders
low TBN value high alkaline reserve low flash point high pour point
vanadium carbon copper ash
centrifuging pressurizing atomization igniting
The diesel oil must never be allowed to mix with the heavy fuel The temperature of the fuel from the pre –heater should be gradually reduced afterswitching over the three –way valve The heating steam to the pre-heater should be secured as soon as the diesel fuel passesthrough the three-way valve The heating steam must be secured before the diesel oil passes through the three-wayvalve
bilge tank sludge tank overflow tank oil collecting tank
throughput additive percent cetane number TBN number
for atomizing for centrifuging in a storage tank in the re-circulating line
item A/BALLAST OR CLEANING OF FUEL OIL TANKS item B/DISCHARGE OF DIRTY BALLAST OR CI.EANING WATER FROM FUEL OIL TANKS R EFERRED TO UNDER SECTION(A) item C/DISPOSAL OF OIL RESIDUES (SLUDGE) item H/BUNKERING OF FUEL OILS
Glazing of the cylinder liners Increase valve wear Excessive oil pumping Increase fuel consumption
heavy oil lube oil fuel oil diesel
copper carbon hydrogen sulfur
the amount of lube oil additives increase piston speeds increase injection pressure decrease engine speeds decrease