Document: NUREG-0800
Document ID: 4e1c316a-99c2-4fd3-9d9b-323791bd85f8
Document Type: srp
Title: SHORT-TERM ATMOSPHERIC DISPERSION ESTIMATES FOR ACCIDENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730398.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.3.4
CFR Part: 
CFR Title: 

Content:
the requirements and procedures applicable to the Commission’s review of an ESP application for approval of a proposed site. Information required in an ESP application includes a description of the site characteristics and design parameters of the proposed site. The scope and level of detail of review of data parallel that used for a CP review. The applicant’s ESP site characteristics should include EAB and LPZ atmospheric dispersion factors calculated as described previously in this SRP section. If the exact plant configuration and location is not known at the ESP 2.3.4-11 Revision 3 - March 2007 stage, the EAB and LPZ χ/Q values should be calculated using the shortest distances between the ESP plant envelope boundary and the EAB and LPZ distances in each downwind sector. Conservative assumptions for the minimum building cross-sectional area and height values should be used to determine building wake effects. Control room χ/Q values are not calculated at the ESP stage because the evaluation of control room habitability satisfies a general design criterion and general design criteria are not addressed at the ESP stage. In the absence of certain circumstances, such as a compliance or adequate protection issue, 10 CFR 52.39 precludes the staff from imposing new site characteristics, design parameters, or terms and conditions on the early site permit at the COL stage. Accordingly, the reviewer should ensure that all physical attributes of the site that could affect the design basis of SSCs important to safety are reflected in the site characteristics, design parameters, or terms and conditions of the early site permit. b. Standard Design Certification Reviews DC applications do not contain general descriptions of site characteristics because this information is site-specific and will be addressed by the COL applicant. However, pursuant to 10 CFR 52.47(a)(1), a DC applicant must provide site parameters postulated for the design. The reviewer verifies that: 1. The