180 NAC 4-012. DOSE EQUIVALENT TO AN EMBRYO/FETUS

012. DOSE EQUIVALENT TO AN EMBRYO/FETUS. Licensees and registrants must control doses to embryo/fetus as follows. 012.01 DOSE LIMIT. The licensee or registrant must ensure that the dose equivalent to an embryo/ fetus during the entire pregnancy, due to occupational exposure of a declared pregnant woman, does not exceed 5 mSv (0.5 rem). See 180 NAC 4-052 for record keeping requirements. 012.02 UNIFORM EXPOSURE RATE. The licensee or registrant must make efforts to avoid substantial variation above a uniform monthly exposure rate to a declared pregnant woman so as to satisfy the limit in 180 NAC 4-012.01. 012.03 DOSE EQUIVALENT. The dose equivalent to an embryo/fetus is the sum of: (A) The deep dose equivalent to the declared pregnant woman; and(B) The equivalent dose to the embryo/fetus resulting from radionuclides in the embryo/fetus and radionuclides in the declared pregnant woman. 012.04 REMAINDER OF PREGNANCY. If the dose equivalent to the embryo/fetus is found to have exceeded 5 mSv (0.5 rem), or is within 0.5 mSv (0.05 rem) of this dose, by the time the woman declares the pregnancy to the licensee, the licensee or registrant must be deemed to be in compliance with 180 NAC 4-012.01 if the additional dose to the embryo/fetus does not exceed 0.5 mSv (0.05 rem) during the remainder of the pregnancy.