Which container houses the AFFF concentrate within the system?

• A. Service tank
• B. AFFF supply line
• C. Proportioner
• D. Sprinkler cabinet

Answer: (A)

AFFF concentrate is stored in a dedicated service tank. This tank is designed to hold the foam concentrate until it’s drawn into the system and metered into the water flow. From there, the concentrate is fed into the proportioner, which mixes it with water to create the foam solution that travels to the sprinklers. The AFFF supply line is the piping that carries concentrate, not a storage container. The proportioner is the mixing device, not a container. The sprinkler cabinet houses the spray heads and controls, not the concentrate. So the service tank is the container that houses the AFFF concentrate.