What does the reserve agent supply requirement state?

• A. Independent from the primary.
• B. Consists of as many multiples of the primary agent supply as the authority having jurisdiction considers necessary.
• C. Must be exactly equal to the primary.
• D. Only used during testing.

Answer: (B)

The idea being tested is how the system ensures there is enough clean agent beyond the main fill to keep protection and recharge capability available. The reserve agent supply is not a fixed, exact amount or something separate from the primary fill. Instead, it is defined as a quantity equal to multiple of the primary agent supply, and the exact multiple is determined by the authority having jurisdiction. This approach gives flexibility to match the facility’s risk, accessibility, and maintenance needs, so the system can be recharged after a discharge or during servicing without needing immediate new shipments.

So the best answer is that the reserve consists of as many multiples of the primary agent supply as the AHJ considers necessary. The other ideas don’t fit because the reserve isn’t independent from the primary, isn’t required to be equal to the primary, and isn’t used only during testing.