• and average concentrations of radioactive material discharges from the facility.

  • Use continuous monitoring methods for determining releases of airborne effluents from process systems that have particulate or airborne materials that can be easily dispersed.
  • Use grab-sampling methods to confirm releases at points that are continuously monitored.

Guidance for uranium recovery monitoring programs can be found in Table 2 of Regulatory Guide 4.14. This guide recommends that licensees perform:

  • Soil sampling and analysis at five or more locations that were used for air particulate sampling.
  • Surface water and groundwater sampling and analysis.
  • Periodic fish, food, and vegetation sampling and analysis, if available.
  • Sediment sampling and analysis.

Requirements for conducting an effluent monitoring program at the U.S. Department of Energy-owned gaseous diffusion plants are provided in 40 CFR 61, Subpart H. This subpart requires radionuclide emission measurements to be made at all release points that have a potential to discharge radionuclides into the air in quantities that could cause an effective dose equivalent in excess of 0.1 mrem per year to any member of the public. Confirmatory measurements are required for other release points that have a potential to release radionuclides into the air. The subpart also contains specific requirements for measurement and analysis procedures using approved methods and for quality assurance.


USNRC (U.S. Nuclear Regulatory Commission) (1977a). Regulatory Guide 1.111, Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water-Cooled Reactors. Revision 1.

USNRC (1977b). Regulatory Guide 1.113. Estimating Aquatic Dispersion of Effluents from Accidental and Routine Reactor Releases for the Purpose of Implementing Appendix I.

USNRC (1977c). Regulatory Guide 1.109. Calculation of Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I. Revision 1. October 1977.

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