Foam-water systems shall be of which types?

Foam-water systems shall be of which types?

• A. Wet Pipe, Dry Pipe, Deluge, or Preaction Type
• B. Only Wet Pipe Systems
• C. Only Deluge Systems
• D. Foam-Water Systems Are Not Specified

Answer: (A)

Foam-water systems are designed to deliver a foam solution by injecting foam concentrate into the water stream, and they can be configured in any of the standard sprinkler system types. NFPA 16 recognizes that a foam-water system may be built as a wet-pipe, dry-pipe, deluge, or preaction system, depending on the hazard and water-supply conditions. The foam concentrate is proportioned into the water through a device (like a proportioner or eductor) regardless of which base piping configuration is used, so the system isn’t limited to a single type. Therefore, the correct understanding is that foam-water systems may be of these four types.

Foam-water systems are designed to deliver a foam solution by injecting foam concentrate into the water stream, and they can be configured in any of the standard sprinkler system types. NFPA 16 recognizes that a foam-water system may be built as a wet-pipe, dry-pipe, deluge, or preaction system, depending on the hazard and water-supply conditions. The foam concentrate is proportioned into the water through a device (like a proportioner or eductor) regardless of which base piping configuration is used, so the system isn’t limited to a single type. Therefore, the correct understanding is that foam-water systems may be of these four types.