Document: NUREG-0800
Document ID: 274f0789-5956-4979-b7da-3b44ddf985d4
Document Type: srp
Title: TORNADO LOADS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070570002.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.3.2
CFR Part: 
CFR Title: 

Content:
tems. The reviewer may identify additional COL action items; however, to ensure these COL action items are addressed during a COL application, they should be added to the DC FSAR. 3.3.2-8 Revision 3 - March 2007 For review of a COL application, the scope of the review is dependent on whether the COL applicant references a DC, an early site permit (ESP) or other NRC approvals (e.g., manufacturing license, site suitability report or topical report). For review of both DC and COL applications, SRP Section 14.3 should be followed for the review of ITAAC. The review of ITAAC cannot be completed until after the completion of this section. IV. EVALUATION FINDINGS The reviewer verifies that the applicant has provided sufficient information and that the review and calculations (if applicable) support conclusions of the following type to be included in the staff's safety evaluation report. The reviewer also states the bases for those conclusions. The applicant has met the requirements of GDC 2 with respect to the capability of structures to withstand design-basis tornado wind effects, tornado-generated atmospheric pressure change effects, and tornado-generated missile impact effects so that their design reflects: 1. Appropriate consideration for the most severe tornado recorded for the site with an appropriate margin; 2. Appropriate combinations of the effects of normal and accident conditions with the effects of the natural phenomena; and 3. The importance of the safety function to be performed. The applicant has designed the plant structures with sufficient margin to prevent structural damage during the most severe tornado loadings that have been determined appropriate for the site so that the requirements in item 1 listed above are met. In addition, the design of seismic Category I structures, as required in item 2 listed above, has included load combinations of the most severe tornado load and the loads resulting from normal and accident conditions. The procedures used to