What is the first step in handling a hazardous materials incident?

Establishing a perimeter and securing the area is crucial as the first step in handling a hazardous materials incident because it ensures the safety of both responders and the public. By establishing a perimeter, emergency personnel can control the scene and prevent unauthorized access to potentially dangerous areas. This action helps to contain the situation and reduces the risk of exposure to harmful substances for both emergency responders and civilians.

Once the area is secured, it becomes safer for emergency services to assess the situation, identify the hazardous materials involved, and determine the appropriate response actions. Establishing a perimeter is a fundamental practice in incident command systems, emphasizing the need for safety and effective management before any further actions, such as evacuation or calling for backup, are taken.

In the context of hazardous materials incidents, prioritizing a secure and controlled environment allows for more informed decision-making regarding possible next steps, such as identifying the substance in question or initiating evacuation procedures if necessary.