In a hazmat incident, the hot, warm, and cold zones are collectively known as what?

• A. Work zones
• B. Control zones
• C. Exclusion zones
• D. Safety zones

Answer: (B)

At hazmat incidents, organizing the area into zones helps protect responders and prevent contamination spread. The hot zone, the warm zone, and the cold zone are all parts of what is called the control zones—the entire controlled area around the incident that is managed to contain the hazard and support operations. The hot zone is where the hazard is present, the warm zone handles decontamination and PPE procedures, and the cold zone is the clean area where command, staging, and non-contaminated operations occur. This grouping is specifically referred to as control zones, rather than work zones, exclusion zones, or safety zones, which are not the standard term for this combined area.