Basic Operations Firefighter Certification Practice Exam

In what condition should the fuel tanks on power tools be left when not in use?

1. Empty

2. Full

3. Half full

4. This condition is not defined

The correct answer is: Full

Leaving the fuel tanks of power tools full when not in use is important for several reasons. A full tank helps prevent moisture from condensing inside the tank, which can lead to corrosion and the development of fuel contaminants. Additionally, a full tank reduces the likelihood of air exposure to the fuel, which can lead to evaporation and degradation of fuel quality. Having a full tank also means that the tool will be ready for use when needed, minimizing downtime for refueling. This readiness is particularly beneficial in emergency situations where immediate operation is necessary. Furthermore, if power tools are stored for an extended period, it's advisable to use fuel stabilizers to keep the fuel fresh, but a full tank generally maintains better overall fuel integrity compared to leaving it empty or partially filled. In contrast, leaving the tank empty may introduce moisture into the tank and fuel system, increasing maintenance concerns and potential operational reliability issues. Therefore, maintaining a full tank when the tools are not in use is a practical and protective practice.