# 10 MARINE FUEL HANDLING & PRE TREATMENT
What kind of information should the Bunker Delivery note contain?
+ density at 15*C,viscosity at 50*C,water content in % by volume and flash point in *C
Fuel tanks should be sounded both before and after bunkering.
Should this be done on:
+ Both vessels.
Three samples should be collected during bunkering of fuel.
What is to be done with these?
+ One should be kept onboard , one should be handed over to supplier and one should be sent for analysis.
2.1 Storage tanks should be kept at a certain temperature in order to allow reliable pumping of high viscosity fuels. The temperature is:
+ 45*C
2.2 For heating of fuel oils, the temperature:
+ Should not exceed a temperature of 10*C below the actual flash point.
Two possible leakage may occur in the tank heating systems.
How is this detected?
+ A+B.
What is the main difference between the purifier & the clarifier?
+ The clarifier does not remove water.
What is the difference in content between the settling tank & service tank?
+ The settling tank contains untreated fuel oil, while the service tank contains purifier fuel oil.
Which components can not be removed by the purifiers?
+ Sulphur and vanadium.
4.1 Which one of these fuel parameters causes most damage to engine?
+ Ash.
4.2 What is the typical viscosity at the injection pumps?
+ 10-20 cst.
4.3 In which part of the liner do abrasive particles cause most damage?
+ Upper part.
At which ratio is sodium to vanadium particularly undesirable?
+ 1:3
If running on fuel with bad ignition quality with long ignition delay. What is the best method to reduce this delay?
+ Increase scavenging temperature.