Federal Register #2026-19300

NRC Issues Regulatory Guides for Flood Risk Assessment at Nuclear Power Plants

This notice announces the issuance of two new Regulatory Guides by the U.S. Nuclear Regulatory Commission (NRC) related to flood risk assessment at nuclear power plants. - Government Buyer: - U.S. Nuclear Regulatory Commission (NRC) - OEMs and Vendors: - NRC is the only organization mentioned; no commercial OEMs or vendors are referenced - Products/Services Requested: - No products or services are being procured - The notice pertains to the publication of: - Regulatory Guide 1.59, Revision 3: "Design-Basis Floods for Nuclear Power Plants" - Regulatory Guide 1.256, Revision 0: "Guidance for Assessment of Flooding Hazards due to Water Control Structure Failures and Incidents" - Unique or Notable Requirements: - Guides provide methods for evaluating flood risks and hazards from water control structure failures (e.g., dams, levees) - Incorporate lessons learned from previous reviews and the Fukushima Dai-ichi accident - Reference additional guidance for advanced reactors - No procurement action, contract, or purchase is associated with this notice

Description

The U.S. Nuclear Regulatory Commission (NRC) is issuing two related Regulatory Guides, RG 1.59, Revision 3, and RG 1.256, Revision 0. RG 1.59 provides guidance for applicants for new nuclear power plants on acceptable methods for evaluating design-basis floods. RG 1.256 offers guidance on evaluating flooding hazards due to failure or incidents at man-made water control structures such as dams and levees. These guides are intended to assist applicants and current licensees in flood risk assessment for nuclear power plants.

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