What is a barricade or cordon used for in explosive safety during egress?

• A. To guide people along a safe route
• B. To designate rest areas
• C. To store equipment
• D. To restrict access to hazard areas and prevent unauthorized entry into explosive zones

Answer: (D)

Barricades and cordons create an exclusion boundary around areas containing explosives. Their main purpose during egress is to prevent unauthorized entry into these hazardous zones, protecting evacuees from blast, flying debris, or thermal hazards. By clearly marking the limits of the danger area, they help safety personnel control access and keep the safe evacuation route unobstructed. They aren’t primarily used to guide people to a route or to designate rest areas or store equipment. The core idea is to restrict access to the hazard area to reduce risk during evacuations.