IR 05000327/2025403

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Cyber Security Inspection Report 05000327/2025403 and 05000328/2025403 - Public
ML25350C266
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 12/19/2025
From: Daniel Bacon
NRC/RGN-II/DORS/EB2
To: Erb D
Tennessee Valley Authority
References
IR 2025403
Download: ML25350C266 (0)


Text

SUBJECT:

SEQUOYAH NUCLEAR PLANT - CYBER SECURITY INSPECTION REPORT 05000327/2025403 AND 05000328/2025403

Dear Delson Erb:

On September 25, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Sequoyah Nuclear Plant and discussed the results of this inspection with Christopher Rice and other members of your staff. The results of this inspection are documented in the enclosed report.

Two findings of very low security significance (Green) are documented in this report. Two of these findings involved violations of NRC requirements. We are treating these violations as non-cited violations (NCVs) consistent with Section 2.3.2 of the Enforcement Policy.

If you contest the violations or the significance or severity of the violations documented in this inspection report, you should provide a response within 30 days of the date of this inspection report, with the basis for your denial, to the U.S. Nuclear Regulatory Commission, ATTN:

Document Control Desk, Washington, DC 20555-0001; with copies to the Regional Administrator, Region II; the Director, Office of Enforcement; the Director, Office of Nuclear Security and Incident Response; and the NRC Resident Inspector at Sequoyah Nuclear Plant.

The following cross cutting aspect was assigned to a finding using Inspection Manual Chapter 0310 Aspects Within Cross Cutting Areas: [H.12] - Avoid Complacency.

If you disagree with a cross-cutting aspect assignment in this report, you should provide a response within 30 days of the date of this inspection report, with the basis for your disagreement, to the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555-0001; with copies to the Regional Administrator, Region II; the Director, Office of Nuclear Security and Incident Response; and the NRC Resident Inspector at Sequoyah Nuclear Plant.

Due to the temporary cessation of government operations, which commenced on October 01, 2025, the NRC began operating under its Office of Management and Budget-approved plan for operations during a lapse in appropriations. Consistent with that plan, the NRC operated at December 18, 2025 reduced staffing levels throughout the duration of the shutdown. However, the NRC continued to perform critical health and safety functions and make progress on other high-priority activities associated with the ADVANCE Act and Executive Order 14300. On November 13, 2025, following the passage of a continuing resolution, the NRC resumed normal operations.

However, due to the 43-day lapse in normal operations, the Office of Nuclear Reactor Regulation granted the Regional Offices an extension on the issuance of the calendar year 2025 inspection reports that should have been issued by November 13, 2025, to December 31, 2025. The NRC resumed the routine cycle of issuing inspection reports on November 13, 2025.

This letter will be made available for public inspection and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in accordance with Title 10 of the Code of Federal Regulations 2.390, Public Inspections, Exemptions, Requests for Withholding.

The enclosed report contains Security-Related Information, so the enclosed report will not be made publicly available in accordance with Title 10 of the Code of Federal Regulations (10 CFR) 2.390(d)(1). If you choose to provide a response that contains Security-Related Information, please mark your entire response Security-Related Information-Withhold from public disclosure under 10 CFR 2.390 in accordance with 10 CFR 2.390(d)(1) and follow the instructions for withholding in 10 CFR 2.390(b)(1). The NRC is waiving the affidavit requirements for your response in accordance with 10 CFR 2.390(b)(1)(ii).

Sincerely, Daniel M. Bacon, Chief Engineering Br 2 Division of Operating Reactor Safety Docket Nos. 05000327 and 05000328 License Nos. DPR-77 and DPR-79 Enclosure:

As stated, cc w/o encl: Distribution via LISTSERV Signed by Bacon, Daniel on 12/18/25

ML25352A254 (Cover letter w/ enclosure(s))

ADAMS ACCESSION NUMBER: ML25350C266 (Cover letter)

Entire Report:

SUNSI Review Non-Sensitive X Sensitive Publicly Available X Non-Publicly Available Cover Letter Only:

X SUNSI Review X Non-Sensitive Sensitive X Publicly Available Non-Publicly Available OFFICE DORS/EB2 DORS/EB2 DORS/EB2 NAME J. Montgomery J. Alamudun D. Bacon DATE 12/17/2025 12/17/2025 12/18/2025