12VAC5-481-930: Disposal by release into sanitary sewerage

A. Licensees may discharge licensed material into sanitary sewerage if each of the following conditions is satisfied:

1. The licensed or other radioactive material is readily soluble or is readily dispersible biological material in water;

2. The quantity of licensed or other radioactive material that the licensee releases into the sewer in one month divided by the average monthly volume of water released into the sewer by the licensee does not exceed the concentration listed in Table 3 of Appendix B to 10 CFR Part 20;

3. If more than one radionuclide is released, the following conditions shall also be satisfied:

a. The licensee shall determine the fraction of the limit in Table 3 of Appendix B to 10 CFR Part 20 represented by discharges into sanitary sewerage by dividing the actual monthly average concentration of each radionuclide released by the licensee into the sewer by the concentration of that radionuclide listed in Table 3 of Appendix B to 10 CFR Part 20; and

b. The sum of the fractions for each radionuclide required by subdivision 3 a of this subsection does not exceed unity; and

4. The total quantity of licensed and other radioactive material that the licensee releases into the sanitary sewerage system in one year does not exceed 5 curies (185 GBq) of hydrogen-3, 1 curie (37 GBq) of carbon-14, and 1 curie (37 GBq) of all other radioactive materials combined.

B. Excreta from individuals undergoing medical diagnosis or therapy with radioactive material are not subject to the limitations contained in this section.