Revising the Duration of Design Certifications

NUCLEAR REGULATORY COMMISSION <CFR>10 CFR Part 52</CFR> <DEPDOC>[NRC-2025-0018]</DEPDOC> <RIN>RIN 3150-AL26</RIN> <SUBJECT>Revising the Duration of Design Certifications</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> Nuclear Regulatory Commission. <HD SOURCE="HED">ACTION:</HD> Proposed rule. <SUM> <HD SOURCE="HED">SUMMARY:</HD> The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its regulations to revise the duration of design certifications (DCs). Specifically, this proposed rule would replace the 15-year duration for DCs with a 40-year duration period, both for existing DCs currently in effect and generically for future DCs, including renewals. This proposed rule would not change the date of issuance or renewal for existing DCs ( <E T="03">i.e.,</E> the start date by which an existing DC may be referenced would remain unchanged). The proposed rule would also incorporate a minor editorial correction. </SUM> <EFFDATE> <HD SOURCE="HED">DATES:</HD> Submit comments on the proposed rule by August 1, 2025. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration only for comments received on or before this date. </EFFDATE> <HD SOURCE="HED">ADDRESSES:</HD> You may submit comments by any of the following; however, the NRC encourages electronic comment submission through the Federal rulemaking website: • <E T="03">Federal Rulemaking Website:</E> Go to <E T="03">https://www.regulations.gov</E> and search for Docket ID NRC-2025-0018. Address questions about NRC dockets to Helen Chang; telephone: 301-415-3228; email: <E T="03">Helen.Chang@nrc.gov.</E> For technical questions contact the individuals listed in the <E T="02">FOR FURTHER INFORMATION CONTACT</E> section of this document. • <E T="03">Email comments to: Rulemaking.Comments@nrc.gov.</E> If you do not receive an automatic email reply confirming receipt, then contact us at 301-415-1677. • <E T="03">Fax comments to:</E> Secretary, U.S. Nuclear Regulatory Commission at 301-415-1101. • <E T="03">Mail comments to:</E> Secretary, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, ATTN: Rulemakings and Adjudications Staff. • <E T="03">Hand deliver comments to:</E> 11555 Rockville Pike, Rockville, Maryland 20852, between 7:30 a.m. and 4:15 p.m. eastern time, Federal workdays; telephone: 301-415-1677. You can read a plain language description of this proposed rule at <E T="03">https://www.regulations.gov/docket/NRC-2025-0018.</E> For additional direction on obtaining information and submitting comments, see “Obtaining Information and Submitting Comments” in the <E T="02">SUPPLEMENTARY INFORMATION</E> section of this document. <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> Daniel Doyle, Office of Nuclear Material Safety and Safeguards, telephone: 301-415-3748, email: <E T="03">Daniel.Doyle@nrc.gov;</E> or Jordan Glisan, Office of Nuclear Reactor Regulation, telephone: 301-415-3478, email: <E T="03">Jordan.Glisan@nrc.gov.</E> Both are staff of the U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001. </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> <HD SOURCE="HD1">Table of Contents:</HD> <EXTRACT> <FP SOURCE="FP-2">I. Obtaining Information and Submitting Comments</FP> <FP SOURCE="FP-2">II. Rulemaking Procedure</FP> <FP SOURCE="FP-2">III. Background</FP> <FP SOURCE="FP-2">IV. Discussion</FP> <FP SOURCE="FP-2">V. Plain Writing</FP> <FP SOURCE="FP-2">VI. Paperwork Reduction Act</FP> <FP SOURCE="FP-2">VII. Regulatory Planning and Review (Executive Order 12866)</FP> <FP SOURCE="FP-2">VIII. Availability of Documents</FP> </EXTRACT> <HD SOURCE="HD1">I. Obtaining Information and Submitting Comments</HD> <HD SOURCE="HD2">A. Obtaining Information</HD> Please refer to Docket ID NRC-2025-0018 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: • <E T="03">Federal Rulemaking Website:</E> Go to <E T="03">https://www.regulations.gov</E> and search for Docket ID NRC-2025-0018. • <E T="03">NRC's Agencywide Documents Access and Management System (ADAMS):</E> You may obtain publicly available documents online in the ADAMS Public Documents collection at <E T="03">https://www.nrc.gov/reading-rm/adams.html.</E> To begin the search, select “Begin Web-based ADAMS 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 <E T="03">PDR.Resource@nrc.gov.</E> For the convenience of the reader, instructions about obtaining materials referenced in this document are provided in the “Availability of Documents” section of this document. • <E T="03">NRC's PDR:</E> 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 <E T="03">PDR.Resource@nrc.gov</E> 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. • <E T="03">Technical Library:</E> 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 <E T="03">Library.Resource@nrc.gov</E> between 8 a.m. and 4 p.m. eastern time, Monday through Friday, except Federal holidays. <HD SOURCE="HD2">B. Submitting Comments</HD> The NRC encourages electronic comment submission through the Federal rulemaking website ( <E T="03">https://www.regulations.gov</E> ). Please include Docket ID NRC-2025-0018 in your comment submission. The NRC cautions you not to include identifying or contact information that you do not want to be publicly disclosed in your comment submission. The NRC will post all comment submissions at <E T="03">https://www.regulations.gov</E> as well as enter the comment submissions into ADAMS. The NRC does not routinely edit comment submissions to remove identifying or contact information. If you are requesting or aggregating comments from other persons for submission to the NRC, then you should inform those persons not to include identifying or contact information that they do not want to be publicly disclosed in their comment submission. Your request should state that the NRC does not routinely edit comment submissions to remove such information before making the comment submissions available to the public or entering the comment into ADAMS. <HD SOURCE="HD1">II. Rulemaking Procedure</HD> Because the NRC considers this action to be non-controversial, the NRC is publishing this proposed rule concurrently with a direct final rule in the Rules and Regulations section of this issue of the <E T="04">Federal Register</E> . The direct final rule will become effective on September 15, 2025. However, if the NRC receives significant adverse comments by August 1, 2025, then the NRC will publish a document that withdraws the direct final rule. If the direct final rule is withdrawn, the NRC will address the comments in a subsequent final rule or as otherwise appropriate. Absent significant modifications to the proposed revisions requiring republication, the NRC will not initiate a second comment period on this action. A significant adverse comment is a comment where the commenter explains why the rule would be inappropriate, including challenges to the rule's underlying premise or approach, or would be ineffective or unacceptable without a change. A comment is adverse and significant if: (1) The comment opposes the rule and provides a reason sufficient to require a substantive response in a notice-and-comment process. For example, a substantive response is required when: (a) The comment causes the NRC staff to reevaluate (or reconsider) its position or conduct additional analysis; (b) The comment raises an issue serious enough to warrant a substantive response to clarify or complete the record; or (c) The comment raises a relevant issue that was not previously addressed or considered by the NRC staff. (2) The comment proposes a change or an addition to the rule, and it is apparent that the rule would be ineffective or unacceptable without incorporation of the change or addition. (3) The comment causes the NRC staff to make a change (other than editorial) to the rule. For the specific proposed changes to the NRC's regulations and additional discussion and associated analyses (including the regulatory analysis, environmental assessment, and finding of no significant impact), see the direct final rule published in the Rules and Regulations section of this issue of the <E T="04">Federal Register</E> and at <E T="03">https://www.regulations.gov</E> under Docket ID NRC-2025-0018. <HD SOURCE="HD1">III. Background</HD> A standard design certification, also referred to simply as a design certification (DC), is a Commission approval by regulation of a final standard design for a nuclear power facility. A DC is codified via rulemaking and is independent of a specific site or an application to construct or operate a plant. An application to construct or operate a plant may reference a DC to take advantage of reviews previously completed by the NRC, though such an application must still address certain site-specific matters. The NRC's regulations governing DCs are codified in part 52 of title 10 of the <E T="03">Code of Federal Regulations</E> (10 CFR), Subpart B, “Standard Design Certifications,” and specific DCs are published as appendices to part 52. In this proposed rule, the NRC would amend its ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview showing 10k of 19k characters. Full document text is stored and available for version comparison. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━