16 Del. Admin. Code § 4465-D-13.0

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

Section 4465-D-13.0 - Dose Limits for Individual Members of the Public

13.1 Each licensee or registrant shall conduct operations so that:

13.1.1 The total effective dose equivalent to individual members of the public from the licensed or registered operation does not exceed 1 millisievert (0.1 rem, or 100 millirem) in a year, exclusive of the dose contribution from background radiation, from any medical administration the individual has received, from exposure to individuals administered radioactive material and released in accordance with their health care providers ALARA license conditions, from voluntary participation in medical research programs, and from the licensee's or registrant's disposal of radioactive material into sanitary sewerage in accordance with Part D, Section 33.0, and

13.1.2 The dose in any unrestricted area from external sources exclusive of the dose contributions from patients administered radioactive material and released in accordance with their health care providers ALARA license conditions, does not exceed 0.02 millisievert (0.002 rem, or 2 millirem) in any one hour; and

*/ The National Council on Radiation Protection and Measurements recommended in NCRP Report No. 91 "Recommendations on Limits for Exposure to Ionizing Radiation" (June 1, 1987) that no more than 0.5 millisievert (0.05 rem) to the embryo/fetus be received in any one month.

**/ Retrofit shall not be required for locations within facilities where only radiation machines existed prior to the effective date of these regulations and met the previous requirements of 5 millisievert (0.5 rem) in a year

13.2 If the licensee or registrant permits members of the public to have access to restricted areas, the limits for members of the public continue to apply to those individuals.

13.3 A licensee, registrant, or an applicant for a license or registration may apply for prior Agency authorization to operate up to an annual dose limit for an individual member of the public of 5 millisievert (0.5 rem, or 500 millirem). This application shall include the following information:

13.3.1 Demonstration of the need for and the expected duration of operations in excess of the limit in subsection 13.1;

13.3.2 The licensee's or registrant's program to assess and control dose within the 5 millisieverts (0.5 rem or 500 millirem) annual limit; and

13.3.3 The procedures to be followed to maintain the dose as low as is reasonably achievable (ALARA).

13.4 In addition to the requirements of Part D, a licensee or registrant subject to the provisions of the Environmental Protection Agency's generally applicable environmental radiation standards in 40 CFR 190 shall comply with those standards.

13.5 The Agency may impose additional restrictions on radiation levels in unrestricted areas and on the total quantity of radionuclides that a licensee or registrant may release in effluents in order to restrict the collective dose.

16 Del. Admin. Code § 4465-D-13.0

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