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:
in Glossary of this document). 5.7 Dose Assessments for 10 CFR Part 50, Appendix I Dose assessments to show compliance with technical specification requirements for meeting the numerical values of 10 CFR Part 50, Appendix I, design objectives should include quarterly and annual doses using the considerations of Regulatory Position 5.4. They should be reported in a format similar to that shown in Table A-4 in the appendix to this regulatory guide and include the items listed below: 1. doses from liquid effluents a. total body dose, quarterly and annual, b. organ dose, quarterly and annual (maximum, any organ), and c. percent of limits for each of the above. 2. doses from gaseous effluents a. beta and gamma air doses, quarterly and annual, b. organ dose commitment from iodine, tritium, and particulate releases with half-lives greater than 8 days, quarterly and annual, and c. percent of limit for each of the above. An evaluation of the local exposure pathways to determine the maximum exposed member of the public should be performed. However, maximum doses from various exposure pathways are not additive from different locations. For example, dose from a downstream drinking water exposure pathway should not be added to the dose to an upstream resident whose exposure is from gaseous effluents and direct radiation unless that individual’s drinking water is obtained from the down stream location. “Maximum” doses to real individuals are assessed as described in Regulatory Guide 1.109. The locations and exposure pathways are those where real individuals are present and exposed. Maximum exposed individuals are characterized as “maximum” with regard to food consumption, occupancy, and other usage of the region in the vicinity of the plant site. For example, licensees should make “maximum” assumptions for food consumption and occupancy factors at actual locations when assessing dose to the maximum exposed individual, unless they have determined and applied