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:
the severity of a given event. This criterion is applicable to SRP Section 2.4.6 in that it specifies the hydrologic phenomenon (i.e., tsunami flooding) addressed in this section. In general terms, it also specifies the level of conservatism that must be used to assess the severity of the flood for the purpose of determining the design bases for structures, systems, and components important to safety. Meeting the requirements of GDC 2 provides a level of assurance that structures, systems, and components important to safety have been designed to withstand the most severe flood likely to occur.10 2. Section 100.10(c) of 10 CFR Part 100 requires that the site's physical characteristics (including seismology, meteorology, geology, and hydrology) be taken into account when determining its acceptability for a nuclear power reactor. 10 CFR Part 100 is applicable to SRP Section 2.4.6 because it addresses the physical characteristics, including hydrology, considered by the Commission when determining the acceptability of the proposed site. To satisfy the hydrologic requirements of 10 CFR Part 100, the applicant's SAR must contain a description of the hydrologic characteristics of the coastal region in which the proposed site is located and an analysis of severe seismically induced waves. The description must be sufficient to assess the acceptability of the site and the potential for a tsunami to influence the design of plant structures, systems, and components important to safety. 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 locally or distantly generated tsunami.11 3. Appendix A to 10 CFR Part 100 requires that geologic and seismic factors be considered 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