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:
REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of issues related to hydrology Secondary - None I. AREAS OF REVIEW Chapter 2 of the Standard Review Plan (SRP) discusses the site characteristics that could affect the safe design and siting of the plant. The staff reviews information presented by the applicant for a construction permit (CP), operating license (OL), design certification (DC), early site permit (ESP), or combined license (COL) concerning hydrological setting of the site as they relate to safety-related structures, systems, and components (SSC). This SRP section applies to reviews performed for each of these types of applications. The staff’s review and findings are described in the appropriate section of the safety evaluation report (SER). In this section of the safety analysis report (SAR), the hydrometeorological design basis is developed to ensure that any potential hazard to the safety-related facilities due to the effects of probable maximum surge and seiche are considered in plant design. The staff’s review of the SAR covers the following specific areas: 1 As defined by National Oceanic and Atmospheric Administration National Weather Service Report 23, the PMH is a hypothetical steady state hurricane having a combination of values of meteorological parameters that will give the highest sustained wind speed that can probably occur at a specified coastal location. 2 A probable maximum storm surge is that surge that results from a combination of meteorological parameters of a probable maximum hurricane, a probable maximum wind storm, or a moving squall line and has virtually no probability of being exceeded in the region involved. 3 As defined by ANSI/ANS-2.8-1992, the probable maximum wind storm is a hypothetical extratropical cyclone that might result from the most severe combination of meteorological storm parameters that is considered reasonably possible in the region involved. 4 Seiche is an extreme sloshing of an