RS-25-152, License Amendment Request for Proposed Change to Limitations and Conditions on Non-LOCA Transient/Accident Methodology
| ML25318B207 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood  |
| Issue date: | 11/12/2025 |
| From: | Steinman R Constellation Energy Generation |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| Shared Package | |
| ML25318B206 | List: |
| References | |
| RS-25-152 | |
| Download: ML25318B207 (1) | |
Text
4300 Winfield Road Warrenville, IL 60555 630 657 2000 Office RS-25-152 10 CFR 50.90 November 12, 2025 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Braidwood Station, Units 1 and 2 Renewed Facility Operating License Nos. NPF-72 and NPF-77 NRC Docket Nos. STN 50-456 and STN 50-457 Byron Station, Units 1 and 2 Renewed Facility Operating License Nos. NPF-37 and NPF-66 NRC Docket Nos. STN 50-454 and STN 50-455
Subject:
License Amendment Request for Proposed Change to Limitations and Conditions on Non-LOCA Transient/Accident Methodology
Reference:
- 1. NRC Safety Evaluation Report, Braidwood Station, Units 1 and 2; and Byron Station, Units 1, and 2 - Issuance of Amendments to Revise Technical Specifications to use Framatome GAIA Fuel (EPID L-2024-LLA-0072), dated August 21, 2025 (ADAMS Accession No. ML25148A202)
In accordance with 10 CFR 50.90, "Application for amendment of license, construction permit, or early site permit," Constellation Energy Generation, LLC (CEG) requests approval for a proposed change to the Limitations and Conditions #3, and #10 from the U.S. Nuclear Regulatory Commission's (NRC) Safety Evaluation Table 3.7.3 (Reference 1). The proposed change is applicable to Renewed Facility Operating License Nos. NPF-72 and NPF-77 for Braidwood Station, Units 1 and 2 (Braidwood) and Renewed Facility Operating License Nos.
NPF-37 and NPF-66 for Byron Station, Units 1 and 2 (Byron). Attachment 1 provides a description and evaluation of the proposed changes. contains information proprietary to Framatome. The affidavit, provided in, sets forth the basis on which Framatome's information may be withheld from public disclosure by the NRC and addresses with specificity the considerations listed in paragraph (b)(4) of 10 CFR 2.390, "Public inspections, exemptions, requests for withholding."
Accordingly, it is respectfully requested that the information that is proprietary to Framatome be withheld from public disclosure in accordance with 10 CFR 2.390. Proprietary information is indicated by text enclosed within ((bold double brackets)). Attachment 2 provides the non-proprietary version of the description and evaluation of the proposed changes. contains Proprietary Information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachment 1, this document is decontrolled.
Proprietary Information - Withhold from Public Disclosure Under 10 CFR 2.390
November 12, 2025 U.S. Nuclear Regulatory Commission Page 2 CEG requests approval of the proposed license amendment request by January 30, 2026.
Once approved, the Braidwood and Byron amendments shall be implemented prior to their respective 2026 spring outages.
The proposed application has been reviewed by Plant Operations Review Committees at Braidwood and Byron in accordance with the requirements of the CEG Quality Assurance Program.
In accordance with 10 CFR 50.91, "Notice for public comment; State consultation,"
paragraph (b), CEG is notifying the States of Illinois of this application for license amendment by transmitting a copy of this letter and its attachments to the designated State Official.
There are no regulatory commitments contained in this letter. Should you have any questions concerning this letter, please contact Brian Seawright at (779) 231-6151.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 12th day of November 2025.
Respectfully, Rebecca L. Steinman Senior Manager - Licensing Constellation Energy Generation, LLC Attachments:
- 1) Evaluation of Proposed Changes (Proprietary)
- 2) Evaluation of Proposed Changes (Non-Proprietary)
NRC Regional Administrator, Region III NRC Senior Resident Inspector, Braidwood Station NRC Senior Resident Inspector, Byron Station Illinois Emergency Management Agency - Division of Nuclear Safety contains Proprietary Information. Withhold from public disclosure under 10 CFR 2.390. When separated from Attachment 1, this document is decontrolled.
- Steinman, Rebecca Lee Digitally signed by Steinman, Rebecca Lee Date: 2025.11.12 19:18:34 -06'00'
A F F I D A V I T
- 1.
My name is Morris Byram. I am Manager, Licensing & Regulatory Affairs for Framatome Inc. (Framatome) and as such I am authorized to execute this Affidavit.
- 2.
I am familiar with the criteria applied by Framatome to determine whether certain Framatome information is proprietary. I am familiar with the policies established by Framatome to ensure the proper application of these criteria.
- 3.
I am familiar with the Framatome information contained in Attachment 1 to CEG letter RS-25-152, with subject License Amendment Request for Proposed Change to Limitations and Conditions on Non-LOCA Transient/Accident Methodology, and referred to herein as Document. Information contained in this Document has been classified by Framatome as proprietary in accordance with the policies established by Framatome for the control and protection of proprietary and confidential information.
- 4.
This Document contains information of a proprietary and confidential nature and is of the type customarily held in confidence by Framatome and not made available to the public. Based on my experience, I am aware that other companies regard information of the kind contained in this Document as proprietary and confidential.
- 5.
This Document has been made available to the U.S. Nuclear Regulatory Commission in confidence with the request that the information contained in this Document be withheld from public disclosure. The request for withholding of proprietary information is made in accordance with 10 CFR 2.390. The information for which withholding from disclosure is requested qualifies under 10 CFR 2.390(a)(4) Trade secrets and commercial or financial information.
- 6.
The following criteria are customarily applied by Framatome to determine whether information should be classified as proprietary:
(a)
The information reveals details of Framatomes research and development plans and programs or their results.
(b)
Use of the information by a competitor would permit the competitor to significantly reduce its expenditures, in time or resources, to design, produce, or market a similar product or service.
(c)
The information includes test data or analytical techniques concerning a process, methodology, or component, the application of which results in a competitive advantage for Framatome.
(d)
The information reveals certain distinguishing aspects of a process, methodology, or component, the exclusive use of which provides a competitive advantage for Framatome in product optimization or marketability.
(e)
The information is vital to a competitive advantage held by Framatome, would be helpful to competitors to Framatome, and would likely cause substantial harm to the competitive position of Framatome.
The information in this Document is considered proprietary for the reasons set forth in paragraph 6(c), 6(d), and 6(e) above.
- 7.
In accordance with Framatomes policies governing the protection and control of information, proprietary information contained in this Document has been made available, on a limited basis, to others outside Framatome only as required and under suitable agreement providing for nondisclosure and limited use of the information.
- 8.
Framatome policy requires that proprietary information be kept in a secured file or area and distributed on a need-to-know basis.
- 9.
The foregoing statements are true and correct to the best of my knowledge, information, and belief.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on: (10/24/2025)
(NAME) morris.byram@framatome.com 2101 Horn Rapids Road Richland, WA 99354 BYRAM Morris Digitally signed by BYRAM Morris Date: 2025.10.24 11:43:59 -07'00'