Document: NUREG-1555
Document ID: 68f32ac9-8d1d-4243-8e32-3aa120bfd4e5
Document Type: esrp
Title: EXPOSURE PATHWAYS
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 5
Section ID: 5.4.1
CFR Part: 
CFR Title: 

Content:
In this analysis, the reviewer should identify potential pathways for the transfer of radioactive materials from the plant or plant effluent streams to individuals. The analysis should consist of two parts: (1) iden- tification of the pathways leading to maximum individual dose commitments and (2) identification of the pathways that will be used to calculate the overall dose estimate due to plant operation. Figures 5.4.1-1 and 5.4.1-2 represent the usual pathways associated with the transfer of radioactive materials to individuals and other biota and should be used by the reviewer to determine on a site-specific basis the pathways of interest for the proposed plant or site. The following pathways should be considered: ` direct radiation from the plant (for determining compliance with 10 CFR 20.1301(d)), including onsite independent spent fuel storage installations and onsite waste facilities ` for gaseous effluents: - immersion in the gaseous plume - inhalation of iodines and particulates - ingestion of iodines and particulates through the milk cow, milk goat, meat animal, and vegetation pathways - radiation from iodines and particulates deposited on the ground. NUREG-1555 5.4.1-6 October 1999 Figure 5.4.1-1. Exposure Pathways to Man October 1999 5.4.1-7 NUREG-1555 Figure 5.4.1-2. Exposure Pathways to Biota Other than Man NUREG-1555 5.4.1-8 October 1999 ` for liquid effluents: - drinking water - ingestion of fish and invertebrates - shoreline activities for water containing radioactive effluents. In addition, the reviewer should examine site-specific data to look for any unusual pathways uniquely associated with the proposed plant, and when any such exist, the reviewer should include them in the analysis. Pathways for Maximum Individual Doses To identify the pathways leading to maximum individual dose commitments, take the following steps: (1) Based on information provided by the applicant, information obtained during the site visit, consul- tation with appropriate