What must be done to ensure that auxiliary agents remain usable?

Ensuring that auxiliary agents remain usable is crucial for effective fire-fighting operations. Thoroughly flushing the system after each use is essential because it prevents the buildup of residues, contaminants, or chemical degradation that could occur if the agent is left to sit in the system. When auxiliary agents are deployed, they are often mixed with other substances or may absorb moisture, which can diminish their effectiveness over time. Flushing the system helps to remove any residual agents or degradation products, ensuring that the next time the system is used, it will function correctly and deliver an effective response to a fire incident.

The other measures, while beneficial for general storage and management of fire-fighting agents, do not specifically address the immediate usability of auxiliary agents in the context of flushing the system. Storing agents in a dry place and in temperature-controlled environments helps preserve their integrity, while rotating stock every six months is a standard inventory practice to ensure effectiveness, but these actions do not directly ensure the usability of agents immediately following use.