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:
m the applicant's submission: a. All potential distant and local tsunami generators, including volcanoes and areas of potential landslides, are investigated and the most critical ones are selected. b. Conservative values of seismic characteristics (source dimensions, fault orientation, and vertical displacement) for the tsunami generators selected are used in the analysis. 2.4.6-3 DRAFT Rev. 3 - April 1996 c. All models used in the analysis are verified or have been previously approved by the staff. Regulatory Guide 1.125 provides guidance in the use of physical models of wave protection structures. d. Bathymetric data are provided (or are readily obtainable). e. Detailed descriptions of shoreline protection and safety-related facilities are provided for wave runup and drawdown estimates. Regulatory Guide 1.102 provides guidance on flood protection for nuclear power plants. f. Ambient water levels, including tides, sea level anomalies, and wind waves, are estimated using NOAA and Corps of Engineers publications as described below. g. If Regulatory Guide 1.59, Position 2, is adopted by the applicant, the design basis for tsunami protection of all safety-related facilities identified in Regulatory Guide 1.29 must be shown to be adequate in terms of the time required for implementation of any emergency procedures. 2. The applicant's estimates of tsunami runup and drawdown levels are acceptable if the estimates are no more than 5% less conservative than the staff's estimates. If the applicant's estimates are more than 5% less conservative (based on the difference between normal water levels and the maximum runup or drawdown levels) than the staff's, the applicant should fully document and justify its estimates or accept the staff's estimates. 3. This section of the SAR will also be acceptable if it states the criteria used to determine that tsunami flooding estimates are not necessary to identify the flood design basis (e.g., the site is not near a large body of water).