🔍 Key Concepts

• Combustion behavior when water is mixed with fuel oil • Where water would separate out in a fuel system (think heaters, drains, tanks) • Typical visible and audible signs in the furnace when fuel quality is poor

💭 Think About

• If water enters the fuel going to the burners, what effect would that have on flame stability and burner operation? • Which choices describe something you would actually see at the boiler front versus somewhere else in the system? • Which option sounds unrelated to boilers and more to ship structure or other equipment?

✅ Before You Answer

• Identify which choices are directly related to burner/furnace operation of an oil-fired boiler • Eliminate any options that deal with hull or casing movement rather than combustion • Think about what an engineer at the boiler front would notice first if water suddenly contaminated the fuel: noise, flame behavior, or something in remote observations