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:
ce is possible, the maximum and minimum seiche water surface elevations should be considered in the selection of the critical flood design bases or design low water conditions. 4. Wave Runup. Detailed descriptions of shoreline protection and safety-related facilities are used in staff’s independent estimate of wind-generated wave runup. Criteria and methods of the USACE, as generally summarized in USACE Coastal Engineering Manual, are used as a standard to evaluate the applicant’s estimate of coincident wind-generated wave action and runup. These criteria are also used to evaluate flooding, including the static and dynamic effects of broken, breaking, and nonbreaking waves. The controlling flood water surface elevations are estimated based on the combination of appropriate ambient water surface elevations, critical storm surge or seiche water surface elevations, and coincident wind-wave action as described in ANSI/ANS-2.8-1992. Similar combinations of factors are also used to assess the low water surface elevation that may affect safety-related plant water supply. 5. Effects of Sediment Erosion and Deposition. Sediment deposition during the storm surge and seiche is estimated to ensure that safety-related functioning of all SSC is not impaired. Erosion caused by high velocity of flood waters or wave action is estimated and its effect on foundations of SSC important to safety is examined. Any potential erosion and sediment deposition should not affect the safety-related functioning of SSC. 6. Consideration of Other Site-Related Evaluation Criteria. 10 CFR Part 100 describes site-related proximity, seismic, and non-seismic evaluation criteria for power reactor applications. Subpart A to 10 CFR Part 100 addresses the requirements for applications before January 10, 1997, and Subpart B is for applications on or after January 10, 1997. The staff’s review should include evaluation of pertinent information to determine if these criteria are appropriately used in the