Document: NUREG-0800
Document ID: 0b3174a2-1530-473d-8cf7-024c17b62e52
Document Type: srp
Title: LONG-TERM ATMOSPHERIC DISPERSION ESTIMATES FOR ROUTINE RELEASES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730713.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.3.5
CFR Part: 
CFR Title: 

Content:
s in the vicinity of the plant. Guidance on appropriate onsite meteorological data is provided in Regulatory Guide 1.23. This information is also reviewed under SRP section 2.3.3. 4. Points of routine release of radioactive material to the atmosphere, including the characteristics (e.g., location, release mode) of each release point. Guidance for identifying release point characteristics is provided in Regulatory Guide 1.112. This information is also reviewed under SRP section 11.3. 5. The specific location of potential receptors of interest (e.g., nearest vegetable garden, nearest resident, nearest milk animal, and nearest meat cow in each 22½ degree direction sector within a 5-mile (8-kilometer) radius of the site). Guidance for identifying the location of potential receptors of interest is provided in Regulatory Guide 1.109. This information is also reviewed under SRP section 11.3. 6. The χ/Q and D/Q values to be used for assessment of the consequences of routine airborne radiological releases as described in Section 2.3.5.2 of Regulatory Guide 1.70 (Ref. 9) and Section 2.3.5.2 of RG 1.206 (Ref. 10): A. Maximum annual average χ/Q values and D/Q values at or beyond the site boundary and at specific locations of potential receptors of interest utilizing appropriate meteorological data for each routine venting location. B. Estimates of annual average χ/Q values and D/Q values for 16 radial sectors to a distance of 50 miles (80 kilometers) from the plant using appropriate meteorological data. Guidance for calculating these χ/Q and D/Q values is provided in Regulatory Guide 1.111. Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. Applicants and licensees generally show compliance with 10 CFR 20, Subpart D by demonstrating that the annual average concentrations of radioactive material released in gaseous (and liquid) effluents at