What should a first responder do first at a hazardous materials incident?

The correct course of action at a hazardous materials incident begins with isolating the scene. This step is crucial because it involves securing the area to prevent unauthorized personnel from entering and being exposed to potentially dangerous materials. By isolating the scene, first responders can establish a safety perimeter that protects both the public and themselves from harm. It also allows for proper assessment and evaluation of the situation without additional risks.

Identifying the material is also an essential part of the response, as different substances require different handling and containment strategies. However, this can generally occur after the scene has been adequately isolated to ensure the safety of responders and the public. Accessing the scene should occur with caution, considering wind direction and other environmental factors to minimize exposure to toxic substances.

In hazardous material scenarios, ensuring safety through isolation is the foundational step that allows for proper identification and response to the incident.