When a fire extinguishing system is installed it shall be an approved what?

• A. Halon system
• B. Carbon Dioxide system
• C. Wet Chemical system
• D. Dry Chemical system

Answer: (B)

Fixed fire suppression systems aboard vessels must use an agent that is approved for marine service by the Coast Guard or an approved testing body. Among common fixed systems, carbon dioxide is the type that is widely approved for protecting enclosed spaces on ships. It works by displacing the oxygen in the space to suppress the fire, which is effective in engine rooms or other enclosed areas where the space can be evacuated before discharge.

Halon systems are heavily restricted due to environmental concerns and may not be approved for new installations. Wet chemical systems are designed for commercial kitchens and aren’t used as a general marine fixed-space extinguisher. Dry chemical systems are typically used in portable extinguishers and some specific applications, not as the standard fixed-space solution on ships.

So, when installing a fire extinguishing system, using an approved carbon dioxide system aligns with current maritime approvals and suitable application for enclosed spaces.