USCG Firefighting License Practice Exam 2025 – All-in-One Guide to Master Your Certification!

When dealing with an electrical fire in the engine room, the recommended procedure involves evacuating personnel first to ensure safety, as electrical fires can be unpredictable and pose significant risks to individuals. After ensuring everyone is out of harm's way, the application of a fixed CO2 system is appropriate.

CO2 is effective for fighting electrical fires because it acts as an asphyxiant, displacing oxygen and thereby suffocating the fire without leaving any residue that could potentially harm electrical equipment. This makes it suitable for spaces with sensitive machinery, like an engine room, where water from the fire main system could result in more damage or danger due to electrical components.

Using the CO2 system after evacuation allows for an efficient fire suppression strategy that leverages the unique properties of CO2. This approach not only protects the crew but also minimizes the risk of further damage to the vessel's machinery and equipment, making it the best choice in this scenario.