Document: NRC Regulatory Guide
Document ID: 96baa826-d3bb-478b-8f38-e74500f6d433
Document Type: regulatory_guide
Title: 06/2009 (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0911/ML091170109.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.21
CFR Part: 
CFR Title: 

Content:
(2) greater than 1 percent of the activity of all nuclides in the type of effluent being considered. Regulatory Guide 1.109 lists the three types of effluents as (1) liquid effluents, (2) noble gases discharged to the atmosphere, and (3) all other nuclides discharged to the atmosphere. In this document, the terms “principal radionuclide” and “principal nuclide” are synonymous since this document is only concerned with measuring, evaluating, and reporting radioactive materials in effluents. QA—Quality Assurance QC—Quality Control radioactive discharge—The emission of an effluent (i.e., containing plant-related, licensed radioactive material) into the unrestricted area. (Same as effluent discharge.) radioactive release—The emission of an effluent (i.e., containing plant-related, licensed radioactive material). (Same as effluent release.) real exposure pathway—An exposure pathway in which plant-related radionuclides in the environment at (or from) a specified location cause exposure to an actual individual. For example, the grass-cow- milk-infant-thyroid exposure pathway would be considered a real exposure pathway if the grass, the cow, and the milk actually existed at a specified location and an infant actually consumed the milk. For purposes of compliance with 10CFR50 Appendix I, the individual must be a member of the public. release source—A system, structure, or component (containing radioactive material under the licensee’s control) where radioactive materials are contained prior to release. release point—A location from which radioactive materials are released from a system, structure, or component (including evaporative releases and leaching from ponds and lakes in the controlled or restricted area before release under 10 CFR 20.2001). For release points monitored by plant process radiation monitoring systems, the release point is associated with the piping immediately downstream of the radiation monitor. (See also the definition for