Document: NUREG-0800
Document ID: fc11b179-5899-46ec-9add-723cad9f6565
Document Type: srp
Title: PROBABLE MAXIMUM SURGE AND SEICHE FLOODING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730425.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.5
CFR Part: 
CFR Title: 

Content:
gn basis events. Such an approach will account for the practical physical limitations of natural phenomena that contribute to the severity of a given event. This criterion is applicable to SRP Section 2.4.5 in that it specifies the hydrologic phenomenon (i.e., surge and seiche flooding) addressed in this section. In general terms, it also specifies the level of conservatism that should be used to assess the severity of floods and low-water events for the purpose of determining the design bases for SSC important to safety. For applications pursuant to 10 CFR Part 52, meeting the applicable requirements of 10 CFR 52.17 and 10 CFR 52.79 that correspond to GDC 2 provides a level of assurance that the most severe hydrologic site characteristics have been identified; whether GDC 2 is met with respect to the adequacy of the associated design bases will be evaluated pursuant to other SRP sections. 2. Sections 100.10(c) and 100.20(c) of 10 CFR Part 100 require 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. To satisfy the hydrologic requirements of 10 CFR Part 100, the applicant’s SAR should contain a description of the surface and subsurface hydrologic characteristics of the region and an analysis of the potential for flooding due to surges or seiches. This description should be sufficient to assess the acceptability of the site and the potential for a surge or seiche to influence the design of plant SSC important to safety. Meeting this requirement provides a level of assurance that plant SSC important to safety have been designed to withstand the most severe flooding likely to occur as a result of storm surges or seiches. III. REVIEW PROCEDURES The reviewer will select material from the procedures described below, as may be appropriate for a particular case. The procedures outlined below are used to review CP applications, ESP