Why do personnel contamination monitors (PCMs) better detect contamination than friskers?

Why do personnel contamination monitors (PCMs) better detect contamination than friskers?

• A. They are larger and automated, leaving less room for human error.
• B. They cost less to operate.
• C. They require more training.
• D. They detect only high-level contamination.

Answer: (A)

PCMs provide continuous, automatic screening over a larger portion of the body, which makes contamination detection more reliable. Because they are fixed in place and actively monitor as people move through, they consistently sample clothing, skin, and shoes and raise an alarm if contamination is present. This reduces reliance on a person operating a handheld detector correctly and on how closely they sweep, which is where handheld friskers can miss contamination. The bigger detector area also increases sensitivity to low levels of contamination that a small, manually used device might miss. So the automatic, wide-area coverage of PCMs leads to better detection than friskers, which depend more on technique and timing.

PCMs provide continuous, automatic screening over a larger portion of the body, which makes contamination detection more reliable. Because they are fixed in place and actively monitor as people move through, they consistently sample clothing, skin, and shoes and raise an alarm if contamination is present. This reduces reliance on a person operating a handheld detector correctly and on how closely they sweep, which is where handheld friskers can miss contamination. The bigger detector area also increases sensitivity to low levels of contamination that a small, manually used device might miss. So the automatic, wide-area coverage of PCMs leads to better detection than friskers, which depend more on technique and timing.