Section 710. Dose to an embryo/fetus

A. The licensee shall ensure that the dose equivalent to the embryo/fetus during the entire pregnancy due to occupational exposure of a declared pregnant woman does not exceed 500 millirem (5 mSv).

B. The licensee shall make efforts to avoid substantial variation above a uniform monthly exposure rate to a declared pregnant woman so as to satisfy the limits in subsection A of this section.

C. The dose equivalent to the embryo/fetus is the sum of:

1. The deep dose equivalent to the declared pregnant woman; and

2. The dose equivalent to the embryo/fetus resulting from radionuclides in the embryo/fetus and radionuclides in the declared pregnant woman.

D. If the dose equivalent to the embryo/fetus is found to have exceeded 500 millirem (5 mSv), or is within 50 millirem (0.5 mSv) of this dose, by the time the woman declares the pregnancy to the licensee, the licensee shall be deemed to be in compliance with subsection A of this section if the additional dose equivalent to the embryo/fetus does not exceed 50 millirem (0.5 mSv) during the remainder of the pregnancy.

Historical Notes

Derived from Volume 22, Issue 25, eff. September 20, 2006; amended, Virginia Register Volume 24, Issue 18, eff. June 12, 2008; Volume 32, Issue 24, eff. August 25, 2016.

Statutory Authority

§ 32.1-229 of the Code of Virginia.