For a declared pregnant worker, what is the maximum exposure they should never exceed?

• A. 0 rem
• B. 0.5 rem (5 mSv)
• C. 2 rem
• D. 1 rem

Answer: (B)

A pregnant worker has a strict fetal exposure limit during the pregnancy to minimize risk to the developing fetus. The limit is 5 mSv (0.5 rem) for the entire gestation. This cap is set because fetal tissues are more radiosensitive, and keeping the dose within this limit helps reduce potential deterministic effects and long-term stochastic risks. In practice, facilities achieve this by using fetal dosimetry, shielding, minimizing time near radiation sources, increasing distance, and, if needed, reassigning to duties with lower exposure.

The other options exceed this gestational limit and are not appropriate as the maximum permissible exposure for a declared pregnancy.