Document: NRC Regulatory Guide
Document ID: 171a124d-54d4-4a50-8f5f-f063d9b686c9
Document Type: regulatory_guide
Title: Design-Basis Hurricane and Hurricane Missiles for Nuclear Power Plants + HISTORY - HISTORY 08/2012 – DG-1247 ,Proposed Revision 0
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1004/ML100480890.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.221
CFR Part: 
CFR Title: 

Content:
e provided to justify the selection of the less conservative design-basis hurricane. Linear interpolation for sites located between two wind DG-1247, Page 6 contour lines is permitted. 2. Design-Basis Hurricane-Generated Missiles The design-basis hurricane-generated missile spectrum given in Table 1 and the corresponding missile velocities given in Table 2 are acceptable to the staff for the design of new nuclear power plants. DG-1247, Page 7 D. IMPLEMENTATION The purpose of this section is to provide information to applicants regarding the NRC’s plans for using this draft regulatory guide. The NRC does not intend or approve any imposition or backfit in connection with its issuance. The NRC has issued this draft guide to encourage public participation in its development. The NRC will consider all public comments received in development of the final guidance document. In some cases, applicants may propose an alternative or use a previously established acceptable alternative method for complying with specified portions of the NRC’s regulations. Otherwise, the methods described in this guide will be used in evaluating compliance with the applicable regulations for license applications. DG-1247, Page 8 Figure 1. Design-Basis Hurricane Windspeeds for the Western Gulf of Mexico U.S. Coastline Representing Exceedance Probabilities of 10-7 per Year. Values are nominal 3-second gust windspeeds in miles per hour (meters per second) at 33 feet (10 meters) above ground over open terrain (reproduced from Reference 6). 130(58) 140(63) 150(67) 160(72) 170(76) 180(80) 190(85) 200(89) 210(94) 220(98) 230(103) 240(107) 250(112) 260(116) 270(121) DG-1247, Page 9 Figure 2. Design-Basis Hurricane Windspeeds for the Eastern Gulf of Mexico and Southeastern Atlantic U.S. Coastline Representing Exceedance Probabilities of 10-7 per year. Values are nominal 3-second gust windspeeds in miles per hour (meters per second) at 33 feet (10 meters) above ground over open terrain (reproduced from