Document: NUREG-0800
Document ID: 332f67ca-c2d9-4259-bbfb-485a47724ddc
Document Type: srp
Title: REGIONAL CLIMATOLOGY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600393.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.3.1
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CFR Title: 

Content:
mena historically reported for the site and surrounding area in establishing the design bases for SSCs important to safety. Specifically, the staff has accepted the methodologies used to analyze these natural phenomena and determine the severity of the weather phenomena reflected in these design bases, as documented in safety evaluation reports for previous licensing actions. Because the applicant has correctly implemented these methodologies, as described above, the staff has determined that the applicant has considered these historical phenomena with margin sufficient for the limited accuracy, quantity, and period of time in which the data have been accumulated. The staff concludes that the identified design bases meet the requirements of 10 CFR Part 50, Appendix A, General Design Criterion 2, “Design Bases for Protection Against Natural Phenomena,” with respect to considering severe natural phenomena in establishing the design basis for SSCs important to safety. The staff finds that the applicant has conformed with the position set forth in Regulatory Guide 1.76 (or has conducted a technical assessment of site-specific tornado data sufficient to justify tornado parameters that deviate from Regulatory Guide 1.76). The staff finds that these tornado parameters are acceptable and meet the requirements of 10 CFR Part 50, Appendix A, General Design Criterion 4, “Environmental and Dynamic Effects Design Bases,” with respect to determining the design-basis tornado for the generation of missiles. 2. Early Site Permit Reviews The following statements should be preceded by a summary of the site characteristics and design parameters to be included in any ESP that might be issued for the ESP site: 2.3.1-10 Revision 3 - March 2007 As set forth above, the applicant has presented and substantiated information to establish the regional meteorological characteristics. The staff has reviewed the information provided and, for the reasons given above, concludes that the