Hazardous Materials Awareness Army 74D Practice Test

In a HazMat incident, three zones are used to separate contamination from clean areas and to organize operations. The area with the highest contamination and the greatest exposure risk is the hot zone, where entry is limited to personnel wearing the appropriate protective gear and where actions like stabilization and containment are performed. The next area is the warm zone, a buffer between hot and cold, where decontamination happens and where support functions and equipment management occur; personnel transition here, and PPE is adjusted as needed. The farthest area is the cold zone, a clean zone used for non-contaminated operations such as command, staging, medical treatment, and other support activities, with no active contamination present. Activities like PPE storage, meals, or resting are not how the zones are defined, and the hot and warm zones are not the same.