Document: NRC Regulatory Guide
Document ID: ea8957a4-4db4-4bf0-8198-a667b7e5aa29
Document Type: regulatory_guide
Title: Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2111/ML21111A005.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.109
CFR Part: 
CFR Title: 

Content:
May 3, 2021 MEMORANDUM TO: Louise Lund, Director Division of Engineering Office of Nuclear Regulatory Research Division of Risk Assessment Office of Nuclear Reactor Regulation SUBJECT: RESULTS OF PERIODIC REVIEW OF REGULATORY GUIDE 1.109 This memorandum documents the U.S. Nuclear Regulatory Commission (NRC) staff’s periodic review of Regulatory Guide (RG) 1.109, Revision 1, “Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with Title 10 of the Code of Federal Regulations Part 50, Appendix I.” This RG, issued in 1977, provides guidance for calculating radiation doses from normal routine radioactive effluents from licensed nuclear power plant operations under annual average environmental conditions. As discussed in Management Directive 6.6, “Regulatory Guides,” the staff reviews RGs periodically to ensure that the RGs continue to provide useful guidance. Documentation of the staff’s periodic review is enclosed. Based on the results of the staff’s periodic review enclosed, the staff concludes that changes to RG 1.109, Revision 1 are warranted at this time. A revision to the RG could benefit current reactor licensees and new reactor applicants. CONTACT: Richard Clement, NRR/DRA/ARCB 301-415-1988 Enclosure: As stated Bowman, Gregory signing on beh of Franovich, Michael on 04/27/21 - 2 - SUBJECT: RESULTS OF PERIODIC REVIEW OF REGULATORY GUIDE 1.109 DATED: 5/03/2021 DISTRIBUTION Z. Gran, NRR R. Clement, NRR K. Hsueh, NRR M. Franovich, NRR H. Karagiannis, RES M. Rahimi, RES ADAMS Accession No: ML21111A005 NRR-106 OFFICE NRR/DRA/ARCB NRR/DRA/ARCB NRR/DRA/ARCB: BC RES/DE/RGGIB NAME ZGran RClement KHsueh HKaragiannis DATE 4/28/2021 4/28/2021 4/29/2021 4/30/2021 OFFICE RES/DE/RGGIB NRR/DRA: DD NAME MRahimi MFranovich (Greg Bowman /RA/ for) DATE 4/30/2021 5/03/2021 OFFICIAL RECORD COPY Enclosure REGULATORY GUIDE PERIODIC REVIEW Regulatory Guide Number: 1.109, Revision 1 Title: Calculation of