What is the maximum annual effective dose limit for a pregnant worker in a 9-month period?

What is the maximum annual effective dose limit for a pregnant worker in a 9-month period?

• A. 0.05 rem (0.5 mSv)
• B. 0.5 rem (5 mSv)
• C. 0.01 rem (0.1 mSv)
• D. 0.1 rem (1 mSv)

Answer: (A)

Fetal protection during pregnancy is the focus here: the dose to the developing fetus must stay within a strict limit over the entire pregnancy. The standard guideline sets the maximum fetal dose for the whole gestation at 5 mSv, which is equivalent to 0.5 rem. Since a pregnancy spans about 9 months, this means the fetus should not accumulate more than 5 mSv in that period. Remember the unit conversion: 1 rem equals 10 mSv, so 5 mSv is 0.5 rem. Among common options, the figure describing 5 mSv (0.5 rem) aligns with the widely accepted fetal dose limit for the entire pregnancy.

Fetal protection during pregnancy is the focus here: the dose to the developing fetus must stay within a strict limit over the entire pregnancy. The standard guideline sets the maximum fetal dose for the whole gestation at 5 mSv, which is equivalent to 0.5 rem. Since a pregnancy spans about 9 months, this means the fetus should not accumulate more than 5 mSv in that period. Remember the unit conversion: 1 rem equals 10 mSv, so 5 mSv is 0.5 rem. Among common options, the figure describing 5 mSv (0.5 rem) aligns with the widely accepted fetal dose limit for the entire pregnancy.