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:
r sources of radiation. When appropriate, such an evaluation includes a physical survey of the location of Rev. 2 of RG 1.21, Page 48 radioactive material and measurements or calculations of levels of radiation, or concentrations or quantities of radioactive material present. TEDE—Total Effective Dose Equivalent type of effluent—A grouping of radioactive releases into one of the three categories listed in 10 CFR 50 Appendix I, paragraphs A through C. The three categories are classified in RG 1.109 as (1) liquid effluents, (2) noble gases discharged to the atmosphere in gaseous radioactive waste, and (3) all other nuclides discharged to the atmosphere in gaseous radioactive waste. unlicensed material—Radioactive material including (1) previously licensed material discharged in effluents, (2) background radioactivity, or (3) global fallout. Licensed radioactive material becomes unlicensed radioactive material upon discharge in effluents in accordance with 10 CFR 20.2001. uncontrolled discharge—An effluent discharge that does not meet the definition of a controlled discharge. See the definition of controlled discharge. uncontrolled release—An effluent release that does not meet the definition of a controlled release. See the definition of controlled release. unplanned discharge—The unintended or unexpected discharge of liquid or airborne radioactive material to the unrestricted area. Examples of an unplanned discharge would include: 1. the unintentional discharge of a wrong waste gas decay tank (or bulk liquid radioactive waste tank), or 2. the failure of a radiation monitor to divert liquid to the radioactive waste system in the case where radioactivity is present and the automatic alarm/trip function fails to divert material to liquid radioactive waste and that material (or a portion of that material) is instead discharged to the environment. unplanned release—The unintended or unexpected release of liquid or airborne radioactive material to the on-site