For a declared pregnant female, what is the monthly dose limit for the embryo?

For a declared pregnant female, what is the monthly dose limit for the embryo?

• A. 5 mrem
• B. 10 mrem
• C. 100 mrem
• D. 50 mrem

Answer: (D)

This question tests the fetal dose limit for a declared pregnant worker. When pregnancy is declared, the dose allowed to the embryo/fetus is reduced to protect development. The total permissible dose to the embryo/fetus during the pregnancy is about 0.5 rem (5 mSv). Spreading that over roughly nine months gives about 50 mrem per month, so the monthly limit is 50 mrem. This keeps the fetus within the overall pregnancy limit while still allowing the worker to continue duties with appropriate precautions. A much smaller monthly value would be overly restrictive, while a higher monthly value would risk exceeding the pregnancy limit.

This question tests the fetal dose limit for a declared pregnant worker. When pregnancy is declared, the dose allowed to the embryo/fetus is reduced to protect development. The total permissible dose to the embryo/fetus during the pregnancy is about 0.5 rem (5 mSv). Spreading that over roughly nine months gives about 50 mrem per month, so the monthly limit is 50 mrem. This keeps the fetus within the overall pregnancy limit while still allowing the worker to continue duties with appropriate precautions. A much smaller monthly value would be overly restrictive, while a higher monthly value would risk exceeding the pregnancy limit.