Which of the following is a method used in contamination control (RPD)?

• A. Restricting areas
• B. Preventing spread
• C. Decontamination
• D. Exposure monitoring

Answer: (C)

Contamination control focuses on reducing or removing radioactive contamination so people and environments stay safe. Decontamination is the direct process of removing or lowering contamination from surfaces, equipment, or personnel. It actively reduces contamination levels through cleaning, washing, wiping, or using appropriate cleaners, making areas and items safe to use again and minimizing potential dose from contact or transfer.

While restricting areas helps limit exposure and access to contaminated zones, and preventing spread aims to reduce the movement of contamination, neither removes the contamination itself. Exposure monitoring measures the radiation dose received but does not eliminate contamination.