Document: NRC Regulatory Guide
Document ID: c7b1689b-ff17-4083-9fb1-f91b6965ea1a
Document Type: regulatory_guide
Title: Design Basis Floods for Nuclear Power Plants + HISTORY - HISTORY 02/2022 – DG-1290 , Proposed Revision 3 09/2014 – Periodic Review of Revision 2 – Revise 07/1980 – Errata to Revision 2 07/2024 – DG-1290 Revision 1 (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740388.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.59
CFR Part: 
CFR Title: 

Content:
LW, using the methods outlined above. Compare this profile with the profiles of the locations shown in Tables C.2 through C.21. With particular emphasis on shallow water depths, select the location or locations in the general area with the most similar profiles. An es timate of the wind setup may be interpolated from the wind setup data for these locations. 2. Pressure setup may be interpolated between locations on either side of the site. 3. Initial rise, as shown in Table C.1, may be inter polated between locations on either side of the site. 4. The 10% exceedance high spring tide may be computed from predicted tide levels in Reference 6; it may be obtained from the Coastal Engineering Research Center, U.S. Army Corps of Engineers, Ft. Belvoir, Va.; it may be interpolated, using the tide relations in Reference 6; or it may be obtained from Appendix A. 5. An estimate of the PMS open-coast stillwater level at the desired site will be the sum of the values from Steps I through 4, above. C.3.3 Wind-Wave Effects Coincident wave heights and wave runup should be computed and superimposed on the PMS stillwater level obtained by the foregoing procedures. Accep table methods are given in Reference 2 and in Appen dix A. CA LIMITATIONS I. The NRC staff will continue to accept for review detailed PMS analyses that result in less con servative estimates. In addition, previously reviewed and approved detailed PMS analyses at specific sites will continue to be acceptable even though the data and procedures in this appendix result in more con servative estimates. 2. The PMS estimates obtained as outlined in Sec tion C.3.2 arc maximum stillwater levels. Coincident wind-wave effects should be added. 3. The PMS estimates obtained from the methods in Section C.3.2 are valid only for open-coast sites, i.e., at the point at which the surge mikes initial land fall. If the site of interest has appreciably different off-shore bathymetry, or if the coastal geometry dif fers or is complex,