What is the purpose of the exit portal contamination monitor?

• A. To screen visitors before entering the plant
• B. To calibrate radiation sensors inside the facility
• C. To check employees for contamination as they leave the Protected Area
• D. To measure air quality in the general plant area

Answer: (C)

The purpose of the exit portal contamination monitor is to detect any removable contamination on personnel as they leave the Protected Area. By scanning people at the exit, it helps ensure that contaminants don’t get carried into non‑restricted areas, triggering decontamination steps if contamination is detected. This enclosure is specifically about preventing spread of contamination when exiting, not about screening visitors, calibrating inside sensors, or measuring general air quality.