California ICC UST Service Technician Practice Exam

What are the three sides of the fire triangle?

1. Heat, pressure, and fuel

2. Fuel, oxygen, and an ignition source

3. Air, fuel, and combustion

4. Oxygen, ignition, and spark

The correct answer is: Fuel, oxygen, and an ignition source

The three sides of the fire triangle are fuel, oxygen, and an ignition source. Understanding this concept is essential in fire prevention and safety, particularly in contexts such as handling and managing underground storage tanks (USTs) and other flammable materials. Fuel is any material that can combust, which can include liquids, solids, and gases. Oxygen is typically derived from the air and is essential for sustaining combustion. The ignition source provides the necessary heat to initiate the combustion process. When all three components of the fire triangle are present in the correct proportions, a fire can occur. In fire safety training, this triangle is crucial because it underscores the importance of removing at least one of these elements to prevent a fire. This foundational knowledge is vital for professionals who may encounter fire hazards in situations involving flammable liquids, ensuring they can mitigate risks effectively.