16 Del. Admin. Code § 4465-D-17.0

Current through Register Vol. 28, No. 7, January 1, 2025

Section 4465-D-17.0 - Conditions Requiring Individual Monitoring of External and Internal Occupational Dose

17.1 Each licensee or registrant shall monitor exposures from sources of radiation at levels sufficient to demonstrate compliance with the occupational dose limits of Part D. As a minimum:

17.1.1 Each licensee or registrant shall monitor occupational exposure to radiation from radiation sources under its control and shall supply and require the use of individual monitoring devices by:

17.1.1.1 Adults likely to receive, in 1 year from sources external to the body, a dose in excess of 10 percent of the limits in subsection 6.1;

17.1.1.2 Minors likely to receive, in 1 year from sources external to the body, a deep dose equivalent in excess of 1 millisievert (0.1 rem, or 100 millirem), a lens dose equivalent in excess of 1.5 millisievert (0.15 rem, or 150 millirem), or a shallow dose equivalent to the skin or to the extremities in excess of 5 millisievert (0.5 rem, or 500 millirem);

17.1.1.3 Declared pregnant women likely to receive during the entire pregnancy, from radiation sources external to the body, a deep dose equivalent in excess of 1 millisievert (0.1 rem, or 100 millirem);

17.1.1.4 Individuals entering a high or very high radiation area; and

17.1.1.5 Individuals working with medical fluoroscopic equipment.

17.1.1.5.1 An individual monitoring device used for the dose to an embryo/fetus of a declared pregnant woman, pursuant to subsection 12.1, shall be located under the protective apron at the waist.

17.1.1.5.2 An individual monitoring device used for lense dose equivalent shall be for external radiation pursuant to subsection 6.3.2, it shall be located at the neck (collar) outside the protective apron. When a second individual monitoring device is used for the same purpose, it shall be located under the protective apron at the waist. The second individual monitoring device is required for a declared pregnant woman.

17.1.2 Each licensee or registrant shall monitor, to determine compliance with Section 9.0, the occupational intake of radioactive material by and assess the committed effective dose equivalent to:

17.1.2.1 Adults likely to receive, in 1 year, an intake in excess of 10 percent of the applicable ALI in Table I, Columns 1 and 2, of Appendix B;

17.1.2.2 Minors likely to receive, in 1 year, a committed effective dose equivalent in excess of 0.1 millisievert (0.01 rem, or 100 millirem); and

17.1.2.3 Declared pregnant women likely to receive, during the entire pregnancy, a committed dose equivalent in excess of 1 millisievert (0.1 rem, or 100 millirem).

16 Del. Admin. Code § 4465-D-17.0

19 DE Reg. 140 (8/1/2015)
22 DE Reg. 401( 11/1/2018) (Final)