Munitions Firefighting Practice Exam

If a rocket motor using solid propellant ignites, what should responders do?

1. Attempt to extinguish the fire immediately.

2. Withdraw and let the fire burn itself out.

3. Deploy foam to suppress the fire.

4. Call for additional firefighting resources.

The correct answer is: Withdraw and let the fire burn itself out.

In the case of a rocket motor using solid propellant that has ignited, the most appropriate course of action is to withdraw and allow the fire to burn itself out. This approach is advised because solid rocket motors contain energetic materials that can create unpredictable hazards when they burn. Attempting to extinguish the fire with water or other means can be ineffective or even dangerous, as water may not suffocate the combustion adequately and could potentially lead to explosive reactions. Solid propellant burns slowly and consistently, and it is designed to operate under high temperatures. Allowing the fire to burn itself out minimizes the risk of exacerbating the situation. Responders should maintain a safe distance, as the fire can produce toxic gases and explosive reactions during its burning phase. Additionally, this caution respects the characteristics of the material involved, ensuring that personnel remain safe while the fire dissipates. Calling for additional firefighting resources may be prudent in certain situations, but primarily withdrawing to a safe distance while the fire burns out serves as a direct and effective response without engaging in potentially hazardous firefighting maneuvers. Thus, the focus is on maintaining safety rather than immediate intervention.