What is a hot zone?

• A. Area between hot and cold zones where decontamination occurs
• B. Area for CP, support operations, and equipment staging
• C. Immediate area surrounding the hazardous materials incident
• D. Back-up entry element location

Answer: (C)

The hot zone is the immediate area around a hazardous materials incident where the hazard is greatest and contamination is most likely to be present. It contains the source term and any areas where release or exposure could be occurring, so access is tightly controlled and limited to trained personnel wearing the proper protective gear. This zone is the inner, highest-risk part of the scene and is kept isolated to protect responders while they evaluate and address the incident.

The area where decontamination happens is the warm zone, which sits between the hot zone and the cold zone. Areas used for CP, support operations, and equipment staging are outside the contaminated area, in the cold zone. The concept of a back-up entry element location isn’t a standard way to define the hot zone.