What is the first action to take when responding to hazardous materials incidents?

The first action to take when responding to hazardous materials incidents is to ensure the safety of responders and establish a safe perimeter. This step is critical because it prioritizes the safety of personnel on the scene as well as the surrounding community. By establishing a safe perimeter, responders can control access to the area, minimizing the risk of exposure to hazardous materials for both emergency personnel and civilians.

This initial action allows for a proper assessment of the situation and the implementation of safety measures before any further actions, such as evacuations or investigations, take place. Ensuring safety helps to prevent escalation of the incident and protects lives, which is the foremost concern in any hazardous materials response.

In contrast, conducting a thorough investigation would happen after safety measures are put in place. Notifying the media too early could lead to panic or misinformation, which is not advisable until a safe and accurate understanding of the situation has been established. Similarly, beginning evacuations without first securing the area could endanger both the responders and the public, making the safety perimeter a critical first step in managing the incident effectively.