What must be provided for each volume, room, and raised or sunken floor to be protected?

• A. Detectors only
• B. Piping network only
• C. Nozzles only
• D. Detectors, piping network, and nozzles

Answer: (D)

The essential idea is that a complete clean agent system for every volume, room, or level must be able to detect a fire, deliver the agent, and distribute it effectively. Detectors are what sense the fire and initiate the release. The piping network provides the path for the clean agent from its storage or source to the protected space. The nozzles disperse the agent throughout the space so the agent can rapidly absorb heat and suppress the fire. Without any one of these elements, protection would be incomplete: detectors without release, piping without a way to release, or nozzles without a source and initiation would all fail to provide full, reliable coverage.