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:
icane, Surge, and Water Level-Watch Hill Point ....... 1.59-63 C.19-Probable Maximum Hurricane, Surge, and Water Level-Hampton Beach ...... .. 1.59-64 C.20-Probable Maximum Hurricane, Surge, and Water Level-Great Spruce Island . . . . 1.59-65 C.21-Ocean-Bed Profiles ........... . .... ............................ 1.59-66 1.59-41 C.1 INTRODUCTION This appendix presents timesaving methods of es timating the maximum stiilwater level of the probable maximum surge (PMS) from hurricanes at open coast sites on the Atlantic Ocean and Gulf of Mexico. Use of the methods herein will reduce both the time necessary for applicants to prepare license applica tions and the NRC staff's review effort. The procedures are based on PMS values deter mined by the NRC staff and its consultants and by applicants for licenses that have been reviewed and accepted by the staff. The information in this appen dix was developed from a study made by Nunn, Snyder, and Associates, through a contract with NRC (Ref. 1). The PMS data are shown in Tables C.I through C.21 and on maps of the Atlantic and Gulf Coasts (Figures C.I and C.2). Suggestions for interpolating between these values are included. Limitations on the use of these generalized methods of estimating PMS are identified in Section C.4. These limitations should be considered in detail in assessing the applicability of the methods at specific sites. Applicants for licenses for nuclear facilities at sites on the open coast of the Atlantic Ocean or the Gulf of Mexico have the option of-using these methods in lieu of more precise but laborious methods contained in Appendix A. The results of application of the methods in this appendix will in many cases be ac cepted by the NRC staff with no further verification. C.2 SCOPE The data and procedures in 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