NRC-2024-0110
Draft Regulatory Guides: Design-Basis Floods for Nuclear Power Plants and Guidance for Assessment of Flooding Hazards Due to Water Control Structure Failures and Incidents
Summary
The U.S. Nuclear Regulatory Commission (NRC) is issuing for public comment two related draft Regulatory Guides (DG) namely DG-1290, Revision 1, "Design-Basis Floods for Nuclear Power Plants," proposed Revision 3 of Regulatory Guide (RG) 1.59 of the same name and DG-1417, "Guidance for Assessment of Flooding Hazards due to Water Control Structure Failures and Incidents," proposed new RG 1.256. DG-1290 provides guidance for applicants for new nuclear power plants (NPPs) on acceptable methods for evaluating design-basis floods and DG-1417 provides guidance for applicants on flooding hazards due to failure or other incidents at man-made water control structures including, but not limited to, dams and levees.