What is the monthly fetal exposure limit for a declared pregnant worker?

• A. 0.5 mSv
• B. 5 mSv
• C. 0.75 mSv
• D. 1 mSv

Answer: (A)

When a worker declares pregnancy, the fetus is protected with a monthly dose limit to keep fetal exposure very low. The fetus must not receive more than 0.5 mSv in any calendar month. This monthly cap helps ensure the total dose during the pregnancy stays well below risk thresholds while allowing the worker to continue essential duties with appropriate protections.

For context, 5 mSv is the typical limit for the entire pregnancy, not per month, so it’s not the right choice here. The other numbers (0.75 mSv, 1 mSv) exceed the monthly limit and are not consistent with the standard fetal dose constraint for a declared pregnant worker.