🔍 Key Concepts

• Microbiological growth in fuel (bacteria, fungi, yeasts) and what damage they cause • How storage temperature actually affects microbes in fuel tanks • What a purifier/centrifuge can and cannot remove from fuel (water, solids vs. organisms/emulsions)

💭 Think About

• Think about what microbes do inside fuel tanks and fuel systems—do they protect equipment, have no effect, or cause problems? • Would higher storage temperatures realistically stop microbial growth in a ship’s fuel tanks, or might they even encourage certain growth or create other issues? • Consider the purpose and limits of a fuel centrifuge: is it designed to eliminate all microorganisms in emulsified fuel, or mainly to separate phases like water and sludge?

✅ Before You Answer

• Be sure you understand whether microbial contamination is harmful or harmless to machinery and operations. • Verify what centrifuging (fuel purification) is actually designed to remove from fuel oil. • Consider whether increasing fuel storage temperature is a standard, recommended method to control microbes in marine fuel.