When should ground ladders be tested after exposure to high heat?

Ground ladders are critical tools for firefighters, and their integrity is vital for safety. When ground ladders are exposed to high heat, their structural integrity can be compromised. Testing them immediately after use ensures that any damage caused by the heat can be identified right away, rather than allowing a potentially unsafe ladder to be used again. This proactive measure helps maintain safety standards and prevents accidents that could result from relying on damaged equipment.

While other options might seem plausible, they either do not address the immediate risk following exposure or lack the urgency needed to ensure the ladders are safe for subsequent uses. Prompt inspection and testing after exposure help ensure that firefighters can rely on their equipment without delay in critical situations.