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:
to calculate another set of individual maximum doses and collective population doses and forward it to the reviewer for ESRP 3.5 for evaluation. ` Repeat this procedure until the reviewer for ESRP 3.5 determines that the applicant’s radioactive waste management system meets the design objectives of 10 CFR 50, Appendix I. Estimation of Doses from Gaseous and Liquid Radioactive Releases In conducting the following analysis, the reviewer should be thoroughly familiar with the information and procedures specified in Regulatory Guide 1.109 (NRC 1976) and with the GASPAR and LADTAP computer codes used to estimate doses from gaseous and liquid radioactive releases. The reviewer should take the following steps in performing the analyses of releases: (1) Assemble the gaseous and liquid source term data provided by the reviewer for ESRP 3.5, the receptor location and exposure pathway data (including hydrological and meteorological dispersion factors) provided by the reviewer for ESRP 5.4.1, and any additional hydrological and meteorological data provided by the reviewers for ESRPs 2.3.1 and 2.7. (2) For iodines and particulates in gaseous effluents, examine the receptor locations, associated pathways, and relative deposition (D/Q) values. Select those locations expected to result in the maximum individual dose for input to the GASPAR computer code. (3) For noble gases in gaseous effluents, examine the normalized concentration (χ/Q) values at the site boundary for each of the 16 compass sectors that intersect land. ` For sites that have water boundaries, examine the meteorological atmospheric dispersion factors for land in sectors beyond the water boundary to determine if any of these locations have higher factors than the other land site-boundary factors. ` Determine the location at which the meteorological atmospheric dispersion factor will result in the maximum beta and gamma air dose and the maximum total body and skin dose to an individual. ` Select data from this