What is required for the primary agent supply in a clean agent system?

• A. The quantity must be at least sufficient for the largest single hazard or group of hazards.
• B. The quantity must exceed any hazard by 10 percent.
• C. The quantity is unlimited.
• D. The quantity must only cover the first discharge.

Answer: (A)

Primary agent supply must be sized to provide at least the amount needed for the largest single hazard or group of hazards within the protected space. This ensures the system can deliver enough clean agent to reach the required design concentration and effectively control or suppress the fire for the most demanding scenario in that space. The other options don’t align with how the system is intended to be sized: there isn’t a fixed 10 percent overage requirement, the supply isn’t unlimited, and the system isn’t limited to covering only the first discharge.