What should be done in the event of an explosion?

• A. Ensure scene safety, assess injuries, and secure the area for investigation.
• B. Ignore the area and wait for investigators.
• C. Start salvage operations immediately.
• D. Ventilate the area and re-enter promptly.

Answer: (A)

When an explosion occurs, the priority is protection of people and the integrity of the scene so investigators can determine what happened. Start with scene safety: identify and control hazards such as ongoing fire, gas leaks, unstable structures, and flying debris; establish a perimeter and keep bystanders away. Then move to patient care by quickly assessing for life-threatening injuries, providing triage and life-saving treatment, and coordinating urgent transport as needed while you maintain scene control. Finally, secure the area for investigation by preserving evidence, avoiding unnecessary movement of debris, and coordinating with investigators so they can perform an origin-and-cause assessment. Re-entry or salvage work should wait until the incident command declares the area safe and access is granted for investigation. Ventilating or re-entering too soon can mask hazards, cause further harm, or destroy evidence.