Document: NUREG-0800
Document ID: 64c331f4-7cf6-4155-b7d2-b0087a4254b8
Document Type: srp
Title: PROBABLE MAXIMUM TSUNAMI FLOODING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070246.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.6
CFR Part: 
CFR Title: 

Content:
idered when determining suitability of the site and acceptability of the plant design. Paragraph IV(c) describes the investigation required to obtain geologic and seismic data necessary for evaluating seismically induced floods and water waves. Appendix A is applicable to SRP Section 2.4.6 because it requires investigation of distantly and locally generated waves or tsunami that have affected or could affect a proposed site, including available evidence regarding the runup or drawdown associated 2.4.6-5 DRAFT Rev. 3 - April 1996 with historic tsunami in the same coastal region and local features of coastal topography that might modify runup or drawdown. More detailed guidance on the investigation of seismically induced flooding is provided in Regulatory Guide 1.70. Meeting this requirement provides a level of assurance that plant structures, systems, and components important to safety have been designed to withstand the effects of a distantly or locally generated tsunami.12 III. REVIEW PROCEDURES The review procedures are outlined in Figure 2.4.6-1. The references used are general geophysical, seismological, and hydrodynamic publications, such as published data by the National Oceanic and Atmospheric Administration (NOAA), and wave propagation models, such as those developed by NOAA, the Corps of Engineers' Waterways Experiment Station (WES), and Tetra Tech. Section 2.4.6 of the applicant's SAR is reviewed to identify any missing data, information, or analysis necessary for the staff's evaluation of potential tsunami flooding. This section is evaluated when the applicant has responded to all the additional information requested. If the site is not near a large body of water with potential tsunami generators, the staff findings may be prepared a priori. The ECGB staff (with input from GB) will review the potential tsunami sources analyzed by 13 the applicant to assure ensure that all locations capable of generating a tsunami of significant 14 magnitude at the site