R 333.5059 Dose equivalent to embryo or fetus.

Rule 59. (1) The registrant shall ensure that the dose equivalent to the embryo or fetus during the entire pregnancy, due to the occupational exposure of a declared pregnant woman, does not exceed 5 millisieverts (500 mrem). Records for doses to the embryo or fetus shall be kept according to R 333.5081(4). (2) The registrant shall make efforts to avoid substantial variation above a uniform monthly exposure rate to a declared pregnant woman to satisfy the limit in subrule (1) of this rule. (3) The dose equivalent to the embryo or fetus is the deep dose equivalent to the declared pregnant woman. (4) If the dose equivalent to the embryo or fetus has exceeded 4.5 millisieverts (450 mrem), when the woman declares the pregnancy to the registrant, the registrant shall be considered in compliance with subrule (1) of this rule if the additional dose equivalent to the embryo or fetus does not exceed 0.5 millisievert (50 mrem) during the remainder of the pregnancy. RADIATION DOSE LIMITS FOR INDIVIDUAL MEMBERS OF THE PUBLIC