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:
this appendix apply only to open-coast areas of the Gulf of Mexico and the Atlantic Ocean. Future studies are planned to determine the ap plicability of similar generalized methods and to develop such methods, if feasible, for other areas. These studies, to be included in similar appendices, are anticipated for the Great Lakes and the Pacific Coast, including Hawaii and Alaska. C.3 PROBABLE MAXIMUM SURGE LEVELS FROM HURRICANES The data presented in this appendix consist of all determinations of hurricane-induced PMS peak levels at open-coast locations computed by the NRC staff or their consultants, or by applicants and ac cepted by the staff. The data are shown in Tables C. 1 through C.21 and on Figures C.I and C.2. All repre sent stillwater levels for open-coast conditions. SAll PMS determinations in Table C.1 were made by NRC consultants for this study (Ref. 1) or for earlier studies except Pass Christian, Brunswick, Chesapeake. Bay Entrance, Forked River-Oyster .Creek, Millstone, Pilgrim, and Hampton Beach. The computations by the consultants were made using the NRC surge computer program, which is adapted from References 2, 3, and 4. Probable max imum hurricane data were taken from Reference 5. Ocean bottom topography for the computations was obtained from the most detailed available Nautical Charts published by the National Ocean Survey, NOAA. The traverse line used for the probable max imum hurricane surge estimate was drawn from the selected coastal point to the edge of the continental shelf or to an ocean depth of 600 feet. MLW and was one hurricane radius to the right of the storm track. The radius to maximum winds was oriented at an angle of 1150 from the storm track. The traverse was oriented perpendicular to the ocean-bed contours near shore. The ocean-bed profile along the traverse line was determined by roughly averaging the topography of cross sections perpendicular to the traverse line and extending a maximum of 5 nautical miles to either side. The