64E-5.311. Dose to an Embryo or Fetus  


Effective on Sunday, October 8, 2000
  • 1(1) The licensee or registrant shall ensure that the dose to an embryo or fetus during the entire pregnancy from occupational exposure of a declared pregnant woman does not exceed 0.5 rem (5 mSv). See Rule 3764E-5.339, 38F.A.C., for recordkeeping requirements.

    42(2) The licensee or registrant shall make efforts to avoid substantial variation above a uniform monthly exposure rate to a declared pregnant woman so as to satisfy the limit in subsection 7364E-5.311(1), 74F.A.C. It is recommended that no more than 0.05 rem (0.5 mSv) be received by the embryo or fetus in any one month.

    97(3) The dose to an embryo or fetus shall be taken as the sum of:

    112(a) The deep dose equivalent to the declared pregnant woman; and

    123(b) The dose to the embryo or fetus from radionuclides in the embryo or fetus and radionuclides in the declared pregnant woman.

    145(4) If by the time the woman declares pregnancy to the licensee or registrant the dose to the embryo or fetus has exceeded 0.5 rem (5 mSv) or is within 0.05 rem (0.5 mSv) of this dose, the licensee or registrant shall be considered in compliance with subsection 19364E-5.311(1), 194F.A.C., if the additional dose to the embryo or fetus does not exceed 0.05 rem (0.50 mSv) during the remainder of the pregnancy.

    217(5) Each individual who has declared pregnancy shall wear a radiation monitor at waist level at all times at work. This monitor shall be used to estimate the fetal deep-dose equivalent. When the declared pregnant worker wears protective clothing, this monitor shall be worn under the protective clothing. The fetal dose is to be kept as low as reasonably achievable, but shall not exceed 10 percent of the standards specified in Rule 28964E-5.304, 290F.A.C. Each declared pregnant worker whose duties require protective clothing shall also wear a radiation monitor outside the protective clothing to estimate dose to the worker, and the standard occupational limits will apply.

    323Rulemaking Authority 325404.051, 326404.081 FS. 328Law Implemented 330404.022, 331404.051(1), 332(4), 333404.081 FS. 335History–New 1-1-94, Formerly 10D-91.442, Amended 10-8-00.

     

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