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:
n of radiology materials is not required. (8) Analyze direct radiation doses to individuals in the vicinity of the site. During this analysis, evaluate the applicant’s estimates of doses from direct radiation. ` If these estimates appear reasonable and justified, they may be used directly in the staff’s analysis. ` If not, ask the applicant to submit additional information so that the staff can adequately evaluate these sources. ` The doses from direct radiation are combined with the doses from gaseous and liquid effluents. ` The dose is to be calculated at a point in the offsite environment. Each unit’s contribution to the dose at that point should be added to determine the total. For example, contributions of stored waste to the dose at any point from each unit will vary depending on the distance from that unit to the point at which dose from the site is evaluated. NUREG-1555 5.4.2-6 October 1999 The reviewer should take the following steps in performing the evaluation: (1) Assess the computer outputs to ensure that data were entered properly and that the outputs appear normal. (2) For noble gases in gaseous effluents from the GASPAR output, determine the maximum beta and gamma dose in air and the maximum dose to total body of an individual and dose to the skin of an individual. Identify the site boundary location for these doses. (3) For iodines and particulates released to the atmosphere, from the GASPAR output, determine the dose to any organ from all pathways. This dose should be for the age group (adult, teenager, child, or infant) receiving the highest dose. The dose should include the ground plane and inhalation pathways that are present at all receptor locations, plus those pathways that are applicable to the particular location. The plume pathway from the GASPAR code is due to noble gases and is not included in the iodine and particulate release pathways. Identify the receptor location for these doses. (4) For liquid effluents, from the LADTAP