Abnormal Exposures are defined as what?

• A. Greater than normal exposures specific to individual work center
• B. Exceeds dose limits set by CFR 20
• C. Cumulative lifetime exposures
• D. Annual report of exposures

Answer: (A)

Abnormal exposures are defined by how they compare to what’s normal for a specific work center. In other words, if the dose you see is higher than the usual or expected exposure for that particular area, task, and equipment, it’s considered abnormal. This focuses on context and typical operations rather than just hitting regulatory limits. Even if the exposure hasn’t exceeded CFR 20 dose limits, a deviation from the normal pattern signals an unusual event that should be investigated and addressed.

Why this fits best: it captures the idea that “abnormal” is relative to the local work conditions, not an absolute number. The other options refer to regulatory limits, cumulative lifetime exposure, or reporting frequency, which describe different concepts and not what defines an exposure as abnormal in daily operations.