Document: NUREG-0800
Document ID: 2b4d3a5f-8e25-4c13-a035-954d864e0c14
Document Type: srp
Title: MISSILES GENERATED BY NATURAL PHENOMENA
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340526.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.4
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Auxiliary Systems Branch (ASB) Secondary- None I. AREAS OF REVIEW The applicant's assessment of possible hazards due .to missiles generated by the design basis tornado, flood, and any other natural phenomena identified in Sec- tion 3.5 of the safety analysis report (SAR) is reviewed and evaluated by the ASB to assure that appropriate design basis missiles have been chosen and properly characterized, and to assure that the effects caused by these missiles are accept- able. Currently, only missiles from the design basis tornado are consistently considered in the plant design bases. Missiles from other phenomena are con- sidered on a case-by-case basis when they are identified. The ASB also reviews the identification of those structures, systems and compo- nents that should be protected against missile impact under Standard Review Plan (SRP) Section 3.5.2. The Structural Engineering Branch (SEB) determines the acceptability of the design analysis, procedures and criteria used to establish the ability of seismic Cate- gory I structures and/or missile barriers to withstand the effects of tornado missiles as part of its primary review responsibility for SRP Section 3.5.3. The acceptance criteria and their methods of application are combined in that SRP section. II. ACCEPTANCE CRITERIA The acceptability of the assessment as described in the applicant's Safety Analysis Report (SAR) is based on compliance with: General Design Criteria 2 and 4 as it relates to the capability of structures, systems, and components important to safety to withstand the effects of tornadoes and other natural phenomena. Accept- ance is based on meeting the guidelines of Regulatory Guide 1.76 and 1.117. The Rev 2 - July 1981 USNRC STANDARD REVIEW. PLAN Standard review plans are prepared for the guidance of the Office of Nuclear Reactor Regulation staff responsible for the review of applications to construct and operate nuclear power plants. These documents are made