Section 180-4-012 - DOSE EQUIVALENT TO AN EMBRYO/FETUS Licensees and registrants must control doses to embryo/fetus as follows.
012.01DOSE 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.012.02UNIFORM 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 4-012.01.012.03DOSE 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.012.04REMAINDER 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.180 Neb. Admin. Code, ch. 4, § 012
Amended effective 6/7/2021