Which action should be avoided to prevent ignition during a HazMat incident?

Using open flames for lighting should be avoided to prevent ignition during a HazMat incident because open flames pose a significant risk of igniting flammable vapors or gases that may be present in the area. In hazardous material situations, there can be many unknown variables, including the presence of volatile substances. The introduction of an open flame can lead to an explosive reaction or fire, endangering responders and potentially exacerbating the situation.

Ensuring that ignition sources are eliminated is a critical safety measure in hazardous material response. While strategies such as removing combustibles, securing a safe perimeter, and setting warning signs are important steps that promote safety and awareness, they do not directly involve the risk of immediate ignition the way open flames do. Thus, avoiding the use of open flames is essential for maintaining a secure environment and preventing further hazards during a response operation.