1.6 Oil fuel transfer In passenger ships, it must be possible to transfer oil from any tank to any other tank without use of the ballast main so that two oil mains are required In cargo ships, the ballast pump may act as standby transfer pump, in which case they must De interconnected alternatively, a diesel oil transfer pump may be the standby. Detail and arrangement will vary with the size type and trade of the ship
1.6 Oil fuel transfer • In passenger ships, it must be possible to transfer oil from any tank to any other tank without use of the ballast main, so that two oil mains are required. • In cargo ships, the ballast pump may act as standby transfer pump, in which case they must be interconnected; alternatively, a diesel oil transfer pump may be the standby. • Detail and arrangement will vary with the size, type and trade of the ship
1.6 Oil fuel transfer In steamers, the fuel is heated in the settling tanks by steam coils, to assist water separation and is then taken to the burners through heaters and filters by the oil fuel pressure pumps e. In motorships, after settling in a similar manner the heavy fuel passes through heaters to two separators in series, the first removing the water and most of the solids in suspension the second called a clarifier. removes the finer solids remaining
1.6 Oil fuel transfer • In steamers, the fuel is heated in the settling tanks by steam coils, to assist water separation, and is then taken to the burners through heaters and filters by the oil fuel pressure pumps. • In motorships, after settling in a similar manner the heavy fuel passes through heaters to two separators in series, the first removing the water and most of the solids in suspension; the second, called a clarifier, removes the finer solids remaining
1.6 Oil fuel transfer The separators, usually having their own pumps, deliver the clean oil to one of two service tanks in turn, from which the oil passes to the engine service pumps and so 1HEATER to the injection pumps, through further heaters Diesel fuel is treated similarly but more simply, with a single stage of separation and no heating Sludge from separators passes to a tank from which it is removed by a pump capable of handling high-viscosity matter
1.6 Oil fuel transfer • The separators, usually having their own pumps, deliver the clean oil to one of two service tanks in turn, from which the oil passes to the engine service pumps and so to the injection pumps, through further heaters. • Diesel fuel is treated similarly but more simply, with a single stage of separation and no heating. • Sludge from separators passes to a tank, from which it is removed by a pump capable of handling high-viscosity matter. HEATER H.O ..P
1.6 Oil fuel transfer It may be mentioned here because it is not al ways understood that fuel is heated for combustion, not to raise its temperature but to bring it to a viscosity acceptable to the injectors or burners
1.6 Oil fuel transfer • It may be mentioned here, because it is not always understood, that fuel is heated for combustion, not to raise its temperature but to bring it to a viscosity acceptable to the injectors or burners
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