2026-15145: Modernizing Reactor Licensing, Safety Oversight, and Siting Practices; Correction
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The U.S. Nuclear Regulatory Commission (NRC) is correcting a notice published in the Federal Register on July 16, 2026, regarding the modernization of reactor licensing, safety oversight, and siting practices to address sections 5(f), 5(h), and 5(i) of Executive Order 14300, and additional items that contribute to adding additional generation to the electrical grid. This action is necessary to withdraw a guidance document containing outdated and incorrect information.
The agency’s own summary, as published.
The rule, in full
805 words as published, July 27, 2026. View the original →
Federal Register, Volume 91 Issue 142 (Monday, July 27, 2026) [Federal Register Volume 91, Number 142 (Monday, July 27, 2026)] [Proposed Rules] [Page 46869] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2026-15145] ======================================================================== Proposed Rules Federal Register ________________________________________________________________________ This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. ======================================================================== Federal Register / Vol. 91, No. 142 / Monday, July 27, 2026 / Proposed Rules [[Page 46869]] ----------------------------------------------------------------------- NUCLEAR REGULATORY COMMISSION 10 CFR Parts 2, 50, 51, 52, 53, 54, 71, and 100 [NRC-2025-0975] RIN 3150-AL44 Modernizing Reactor Licensing, Safety Oversight, and Siting Practices; Correction
Agency
Nuclear Regulatory Commission.
Action
Proposed rule and guidance; request for comment; correction. -----------------------------------------------------------------------
Summary
The U.S. Nuclear Regulatory Commission (NRC) is correcting a notice published in the Federal Register on July 16, 2026, regarding the modernization of reactor licensing, safety oversight, and siting practices to address sections 5(f), 5(h), and 5(i) of Executive Order 14300, and additional items that contribute to adding additional generation to the electrical grid. This action is necessary to withdraw a guidance document containing outdated and incorrect information.
Dates
The correction takes effect on July 27, 2026.
Addresses
Please refer to Docket ID NRC-2025-0975 when contacting the NRC about the availability of information for this action. You may obtain publicly available information related to this action by any of the following methods: Federal Rulemaking website: Electronically at https://www.regulations.gov. Search for Docket ID NRC-2025-0975. Address questions about NRC dockets to Helen Chang; telephone: 301-415-3228; email: [email protected]. For technical questions, contact the individual listed in the FOR FURTHER INFORMATION CONTACT section of this document. NRC's Agencywide Documents Access and Management System (ADAMS): You may obtain publicly available documents online in the ADAMS Public Documents collection at https://www.nrc.gov/reading-rm/adams.html. To begin the search, select ``Begin ADAMS Public Search.'' For problems with ADAMS, please contact the NRC's Public Document Room (PDR) reference staff at 1-800-397-4209, at 301-415-4737, or by email to [email protected]. NRC's PDR: The PDR, where you may examine and order copies of publicly available documents, is open by appointment. To make an appointment to visit the PDR, please send an email to [email protected] or call 1-800-397-4209 or 301-415-4737, between 8 a.m. and 4 p.m. eastern time, Monday through Friday, except Federal holidays. Technical Library: The Technical Library, which is located at Two White Flint North, 11545 Rockville Pike, Rockville, Maryland 20852, is open by appointment only. Interested parties may make appointments to examine documents by contacting the NRC Technical Library by email at [email protected] between 8 a.m. and 4 p.m. eastern time, Monday through Friday, except Federal holidays. You can read a plain language description of the proposed rule at https://www.regulations.gov/docket/NRC-2025-0975.
For Further Information Contact
Daniel Doyle, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, telephone: 301-415-3748, email: [email protected].
Supplementary Information
The U.S. Nuclear Regulatory Commission (NRC) is withdrawing Draft Regulatory Guide (DG)-4037, ``Preparation of Environmental Reports for Nuclear Power Stations'' (Proposed Revision 5 to Regulatory Guide 4.2; ADAMS Accession No. ML25268A122). The DG-4037 was included in the proposed rule, ``Modernizing Reactor Licensing, Safety Oversight, and Siting Practices'' published in the Federal Register (FR) on July 16, 2026 (91 FR 44560). Draft Regulatory Guide DG-4037 contains outdated and incorrect information. Accordingly, the NRC is withdrawing DG-4037 from the proposed rule and guidance; request for comment. Stakeholders should disregard DG-4037 when evaluating the ``Modernizing Reactor Licensing, Safety Oversight, and Siting Practices'' proposed rule. The NRC will consider whether revised or consolidated implementing guidance is warranted in the future. Correction In Proposed Rule Document 2026-14341, appearing on pages 44650 and 44652 in the issue of Thursday, July 16, 2026, make the following corrections: On page 44650, in the third column, delete ``22. The DG-4037, `Preparation of Environmental Reports for Nuclear Power Stations,' would be Revision 5 to the existing RG 4.2.'' On page 44652, in the Availability of Documents table, delete ``DG- 4037, `Preparation of Environmental Reports for Nuclear Power Stations,' July 2026'' and ``ML25268A122.'' The NRC may post materials related to this document, including public comments, on the Federal rulemaking website at https://www.regulations.gov under Docket ID NRC-2025-0975. In addition, the Federal rulemaking website allows members of the public to receive alerts when changes or additions occur in a docket folder. To subscribe: (1) navigate to the docket folder (NRC-2025-0975); (2) click the ``Subscribe'' button; and (3) enter an email address and click on the ``Subscribe'' button. Dated: July 23, 2026. For the Nuclear Regulatory Commission. Araceli Billoch Colon, Chief, Rulemaking Projects Branch 2, Division of Guidance, Rulemaking, Economic Analysis, and Technical Editing, Office of Nuclear Material Safety and Safeguards. [FR Doc. 2026-15145 Filed 7-24-26; 8:45 am] BILLING CODE 7590-01-P
What this changes
Amends 8 parts of the Code of Federal Regulations — the standing rules this notice rewrites.
- 10 CFR 2 Agency Rules of Practice and Procedure
- 10 CFR 50 Domestic Licensing of Production and Utilization Facilities
- 10 CFR 51 Environmental Protection Regulations for Domestic Licensing and Related Regulatory Functions
- 10 CFR 52 Licenses, Certifications, and Approvals for Nuclear Power Plants
- 10 CFR 53 Risk-Informed, Technology-Inclusive Regulatory Framework for Commercial Nuclear Plants
- 10 CFR 54 Requirements for Renewal of Operating Licenses for Nuclear Power Plants
- 10 CFR 71 Packaging and Transportation of Radioactive Material
- 10 CFR 100 Reactor Site Criteria
Rulemaking docket
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Supporting & Related Material July 16, 2026DG-1263 Revision 1 Establishing Analytical Limits for Zirconium-Based Alloy Cladding Proposed New Regulatory Guide 1.224
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Supporting & Related Material July 16, 2026NUREG-0800 Chapter 14 Section 14.3 Inspections Tests Analyses and Acceptance Criteria
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Supporting & Related Material July 16, 2026DG-1425 Alternative Radiological Source Terms for Evaluating Design-Basis Accidents at Nuclear Power Reactors Proposed Rev 2 to RG 1.183
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Supporting & Related Material July 16, 2026Regulatory Analysis for the Proposed Rule Modernizing reactor Licensing Safety Oversight and Siting Practices NRC-2025-0975 RIN 3150-AL44
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Supporting & Related Material July 16, 2026DG-1262 Revision 1 Determining Post Quench Ductility Proposed New Regulatory Guide 1.223
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Supporting & Related Material July 16, 2026DG-1467 Assuring the Availability of Funds for Decommissioning Nuclear Reactors Proposed Revision 3 to Regulatory Guide 1.159
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Supporting & Related Material July 16, 2026DG-1434 Addressing the Consequences of Fuel Dispersal in Light-Water Reactor Loss of Coolant Accidents Proposed New Regulatory Guide 1
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Supporting & Related Material July 16, 2026DG-1460 Applications for Nuclear Power Plants. Proposed Revision 2 to Regulatory Guide 1.206
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Supporting & Related Material July 16, 2026[Withdrawn] DG-4037 Preparation of Environmental Reports for Nuclear Power Stations Proposed Revision 5 to Regulatory Guide 4.2
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Supporting & Related Material July 16, 2026DG-1457 Guidance on Making Changes to Emergency Plans for Nuclear Power Reactors Proposed Revision 2 to Regulatory Guide 1.219
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Supporting & Related Material July 16, 2026OMB Burden Tables for Modernizing Reactor Licensing Safety Oversight and Siting Practices Proposed Rule
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Supporting & Related Material July 16, 2026OMB Supporting Statement for Information Collections Contained in Modernizing Reactor Licensing Safety Oversight and Siting Practices Proposed Rule
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Supporting & Related Material July 16, 2026LR-ISG-2026-01 Updated Review Criteria for License Renewal
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Supporting & Related Material July 16, 2026Draft Environmental Assessment for the Proposed Rule Modernizing Reactor Licensing Safety Oversight and Siting Practices NRC-2025-0975 RIN 3150-AL44
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Supporting & Related Material July 16, 2026DG-1426 An Approach for a Risk-Informed Evaluation Process Supporting Alternative Acceptance Criteria for Emergency Core Cooling Systems
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Supporting & Related Material July 16, 2026DG-4036 Graded Approach to Site Characterization for New Reactor Applications Proposed New Regulatory Guide 4.29
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Supporting & Related Material July 16, 2026DG-1465 Guidance for a Technology Inclusive Content of Application Methodology to Inform the Licensing Basis and Content of Applications for Licenses Cert
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Supporting & Related Material July 16, 2026DG-1454 Implementation of Determinate and Data-Backed Thresholds for Reactor Safety Assessments Proposed New Regulatory Guide 1.269
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Supporting & Related Material July 16, 2026DG-1261 Revision 1 Measuring Breakaway Oxidation Behavior Proposed New Regulatory Guide 1.222
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Supporting & Related Material July 16, 2026DG-1430 Performance-Based Emergency Preparedness Proposed Revision 1 to Regulatory Guide 1.242
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Supporting & Related Material July 16, 2026Unofficial Redline Rule Language for the Proposed Rule Modernizing Reactor Licensing Safety Oversight and Siting Practices NRC-2025-0975 RIN 3150-AL44
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Supporting & Related Material July 16, 2026DG-1463 Meteorological Monitoring Programs for Nuclear Power Plants. Proposed Revision 2 to Regulatory Guide 1.23
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Supporting & Related Material July 16, 2026DG-1462 A Performance-Based Approach to Define the Site-Specific Earthquake Ground Motion Proposed Rev 1 to RG 1.208
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Supporting & Related Material July 16, 2026DG-1466 Guidance for Implementation of 10 CFR 50.59 Changes Tests and Experiments Proposed Revision 4 to Regulatory Guide 1.187
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Supporting & Related Material July 16, 2026DG-1428 Plant-Specific Applicability of the Transition Break Size Proposed New Regulatory Guide 1.258
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Supporting & Related Material July 16, 2026DG-1468 Guidance for Implementation of 10 CFR 50.221 Credibility Requirements for Modeling and Simulation Proposed New Regulatory Guide 1
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Supporting & Related Material July 16, 2026DG-1456 Emergency Response Planning and Preparedness for Nuclear Power Reactors Proposed Revision 8 to Regulatory Guide 1.101
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Supporting & Related Material July 16, 2026DG-1461 Guidance for Changes During Construction for New Nuclear Power Plants Being Constructed Under a Combined License
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Supporting & Related Material July 16, 2026DG-1464 Guidance for Content of Applications Under 10 CFR 50.220 and 52.220 Proposing Risk-Informed and Performance-Based Alternative Acceptance Criteria
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Proposed Rule July 16, 2026Modernizing Reactor Licensing, Safety Oversight, and Siting Practices
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Proposed Rule July 27, 2026Modernizing Reactor Licensing, Safety Oversight, and Siting Practices; Correction
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Proposed Rule July 27, 2026Modernizing Package Certification Requirements
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Supporting & Related Material August 06, 2026Response to Conference of Radiation Control Program Directors Request for Extension of Comment Period ML26210A428
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Supporting & Related Material August 06, 2026Response to Nuclear Innovation Alliance Request for Extension of Comment Period ML26216A300
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Supporting & Related Material August 06, 2026Response to Connecticut Department of Energy and Environmental Protection Request for Extension of Comment Period ML26210A425
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Supporting & Related Material August 26, 2026Response to Offices of the Illinois and Massachusetts Attorneys General Request for Extension of Comment Period ML26237A192
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Supporting & Related Material August 28, 2026Summary of August 3, 5, and 6, 2026, Public Meetings on Executive Order 14300 Rulemaking, Modernizing Reactor Licensing, Safety Oversight, and Siting Practices
Public comments
What people are saying
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George Joslin 2026-08-31
“See attached file(s)”
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National Association of Manufacturers 2026-08-31
“See attached file(s)”
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Natural Resources Defense Council, Inc. (NRDC) 2026-08-31
“Comments from the Natural Resources Defense Council (NRDC) Re: Docket ID No. NRC-2025-0975; RIN 3150-AL44; Modernizing Reactor Licensing, Safety Oversight, and Siting Practices, 91 Fed. Reg. 44,560 (July 16, 2026)”
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Nuclear Energy Institute 2026-08-31
“See attached file(s)”
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The Conference of Radiation Control Program Directors 2026-08-31
“See attached file(s)”
Read all comments on Regulations.gov →
Comment volume from Regulations.gov; the comment-submission API was retired in 2025, so comments are filed on Regulations.gov directly.
Documents
- Full text (Federal Register) · July 27, 2026
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