Document: NUREG-0800
Document ID: 5269bfff-df41-4f7b-9872-4f4ce819a504
Document Type: srp
Title: PROBABLE MAXIMUM TSUNAMI FLOODING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340543.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.6
CFR Part: 
CFR Title: 

Content:
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). 2.4.6-2 Rev. 2 - July 1981 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 pub- lished data by the National Oceanic and Atmospheric Administration (NOAA), and wave propagation models such as those developed by NOAA, 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 pre- pared a priori. The staff (with input from GB) will review the potential tsunami sources ana- lyzed by the applicant to assure that all locations capable of generating a tsunami of significant magnitude at the site have been considered. The GB staff will evaluate the geoseismic parameters of the tsunami generators, includ- ing fault location and orientation, and amplitude and areal extent of vertical displacement, to assure that conservative values have been chosen. An independent staff analysis, using one of the models listed in the refer- ences, may be performed. Staff estimates of tsunami levels are compared with the applicant's. The applicant must justify, to the staff's satisfaction, tsunami levels more than 5% less conservative than the staff's. As an alternative, the staff may perform an independent evaluation of the appli- cant's model and its utilization. The model's theoretical basis, its inherent conservatism and applicability to the problem, will be evaluated (this can be done on a generic basis). The