Abnormal Exposures describe which condition?

• A. Greater than normal exposures specific to individual work center
• B. Exceeds dose limits set by CFR 20
• C. Excess over the lifetime report
• D. Investigation action levels

Answer: (A)

Abnormal Exposures are about doses that are higher than what is normally expected for a specific work center or task. This isn’t about hitting a regulatory limit or about lifetime totals; it’s about a deviation from the usual level of exposure you’d expect in that area. When exposures spike above the normal baseline, it signals something unusual in shielding, procedures, occupancy, or source strength that needs investigation and corrective action to bring conditions back in line with ALARA.

Exceeding CFR 20 dose limits is a regulatory concern and would trigger different compliance actions, while lifetime excesses or predefined investigation action levels relate to broader tracking or escalation steps. The key idea here is the local, area-specific deviation from normal exposure.