Secondary contamination refers to contamination of personnel due to contaminated equipment or gear.

Secondary contamination refers to contamination of personnel due to contaminated equipment or gear.

• A. Working in the hot zone
• B. Upwind and uphill from the hot zone
• C. Parking apparatus upwind
• D. Contamination via contaminated equipment or gear

Answer: (D)

Secondary contamination happens when a hazardous substance is spread to responders through contaminated equipment or gear. If PPE, tools, hoses, or other gear carry the contaminant and touch skin or clean surfaces, it can transfer the substance and create exposure beyond the initial hazard area. That’s why the option describing contamination via contaminated equipment or gear is the best fit. The other scenarios describe direct exposure in the hot zone or exposure control concepts related to plume direction, not the mechanism of gear-driven spread.

Secondary contamination happens when a hazardous substance is spread to responders through contaminated equipment or gear. If PPE, tools, hoses, or other gear carry the contaminant and touch skin or clean surfaces, it can transfer the substance and create exposure beyond the initial hazard area. That’s why the option describing contamination via contaminated equipment or gear is the best fit. The other scenarios describe direct exposure in the hot zone or exposure control concepts related to plume direction, not the mechanism of gear-driven spread.