Document: NUREG-0800
Document ID: fce5c014-cdea-4bf2-83f9-535d051f0f3b
Document Type: srp
Title: MISSILES GENERATED BY NATURAL PHENOMENA
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070375.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.4
CFR Part: 
CFR Title: 

Content:
procedures for the review of certified design material (CDM) for the standard design, including the site parameters, interface criteria, and ITAAC.42 IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided and the review and calculations support conclusions of the following type, to be included in the staff's safety evaluation report: Structures, systems and components (SSC) important to safety are designed to 43 withstand the effects of natural phenomena without loss of capability to perform their safety functions. 3.5.1.4-7 DRAFT Rev. 3 - April 1996 The basis for acceptance in the staff review is the conformance of the applicants' design and design criteria for the protection from the effects of natural phenomena to the Commission's regulations as set forth in the General Design Criteria, and to applicable Regulatory Guides and National Standards. The staff concludes that the assessment of possible hazards due to missiles generated by the design basis tornado, flood, and other natural phenomena is acceptable and conforms to the requirements of General Design Criterion 2 and General Design Criterion 4 as they relate to tornado-generated missiles. This conclusion is based on the applicant having met the requirements of General Design Criteria 2 and 4 by: (a) meeting Regulatory Guide 1.76 Positions C-1 or and C-2 and (b) meeting Regulatory Guide 1.117 Positions 44 C-1 through thru C-3. 45 The staff concludes for new applications that, if the positions of Regulatory Guide 1.76 are not fully applied, a maximum tornado wind speed of at least 482 km/hr (300 mph) is utilized.46 For design certification reviews, the findings will also summarize, to the extent that the review is not discussed in other safety evaluation report sections, the staff's evaluation of inspections, tests, analyses, and acceptance criteria (ITAAC), including design acceptance criteria (DAC), site interface requirements, and combined license action items that are