ML26022A327
| ML26022A327 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Surry, North Anna  (DPR-065, NPF-049, NPF-004, NPF-007, DPR-032, DPR-037) |
| Issue date: | 02/03/2026 |
| From: | Geoffrey Miller NRC/NRR/DORL/LPL2-1 |
| To: | Carr E Dominion Nuclear |
| Miller G | |
| References | |
| EPID L-2025-LLT-0000 | |
| Download: ML26022A327 (0) | |
Text
February 3, 2026 Mr. Eric S. Carr Chief Nuclear Officer & President Nuclear Operations & Contracted Energy Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, VA 23060-6711
SUBJECT:
SURRY POWER STATION, UNITS 1 AND 2, NORTH ANNA POWER STATION, UNITS 1 AND 2, MILLSTONE POWER STATION, UNITS 2 AND 3, AND VIRGIL C. SUMMER NUCLEAR STATION, UNIT 1 - REGULATORY AUDIT PLAN IN SUPPORT OF DOMINION FLEET REPORT DOM-NAF-4-P/NP REGARDING MODERATOR TEMPERATURE COEFFICIENT ANALYTICAL VERIFICATION (EPID L-2025-LLT-0000)
Dear Mr. Carr:
By letter dated November 24, 2025 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML25329A238), Dominion Energy (Dominion, the licensee) submitted, for U.S. Nuclear Regulatory Commission (NRC) review and approval, a fleet report applicable to Surry Power Station, Units 1 and 2, North Anna Power Station, Units 1 and 2, Millstone Power Station, Units 2 and 3, and Virgil C. Summer Nuclear Station, Unit 1. The report provides a technical justification for the analytical verification of the moderator temperature coefficient for Technical Specification surveillances.
The NRC staff has identified the need to conduct a regulatory audit to examine Dominions analysis and non-docketed information with the intent to gain understanding, verify information, or identify information that will require docketing to support the basis of the NRCs licensing regulatory decision.
The NRC staff will conduct the audit in-person (currently planned for the week of March 2, 2026), with formal audit meetings to be scheduled during this period, as needed. The NRC staff reserves the right to extend the audit, if necessary. The detailed audit plan is enclosed with this letter.
If you have any questions, please contact me at (301) 415-2481 or by email at ed.miller@nrc.gov.
Sincerely, G. Edward Miller, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-280, 50-281, 50-338, 50-339, 50-336, 50-423, and 50-395
Enclosure:
Audit Plan cc: Listserv GLENN MILLER Digitally signed by GLENN MILLER Date: 2026.02.03 09:21:15 -05'00'
Enclosure REGULATORY AUDIT PLAN BY THE OFFICE OF NUCLEAR REACTOR REGULATION TO SUPPORT THE FLEET REPORT REVIEW ANALYTICAL VERIFICATION OF MODERATOR TEMPERATURE COEFFICIENT DOMINION ENERGY SURRY POWER STATION, UNITS 1 AND 2 DOCKET NOS. 50-348 AND 50-364 NORTH ANNA POWER STATION, UNITS 1 AND 2 DOCKET NOS. 50-280 AND 50-281 MILLSTONE POWER STATION, UNITS 2 AND 3 DOCKET NOS. 50-336 and 50-423 VIRGIL C. SUMMER NUCLEAR STATION, UNIT 1 DOCKET NO. 50-395
1.0 BACKGROUND
By letter dated November 24, 2025 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML25329A238), Dominion Energy (Dominion, the licensee) submitted, for U.S. Nuclear Regulatory Commission (NRC) review and approval, a fleet report applicable to Surry Power Station, Units 1 and 2, North Anna Power Station, Units 1 and 2, Millstone Power Station, Units 2 and 3, and Virgil C. Summer Nuclear Station, Unit 1. The report provides a technical justification for the analytical verification of the moderator temperature coefficient for Technical Specification surveillances.
The NRC staff has identified the need to conduct a regulatory audit to examine Dominions non-docketed information with the intent to gain understanding, verify information, or identify information that will require docketing to support the basis of the NRCs licensing regulatory decision.
The NRC staff from the Office of Nuclear Reactor Regulation (NRR) has initiated its review of the request in accordance with NRR Office Instruction LIC-101, Revision 6, License Amendment Review Procedures August 2020 (ML19248C539).
2.0 REGULATORY AUDIT BASIS A regulatory audit is a planned license or regulation-related activity that includes the examination and evaluation of primarily non-docketed information associated with the request.
An audit is conducted to gain understanding, to verify information, and to identify information that will require docketing to support the basis of a licensing or regulatory decision. An audit will assist the NRC staff in efficiently conducting its review and gaining insights to the licensees processes and procedures. Information that the NRC staff relies upon to make the safety determination must be submitted on the docket. This audit will be conducted in accordance with NRR Office Instruction LIC-111, Revision 2, Regulatory Audits, December 2024 (ML24309A281), with exceptions noted within this audit plan.
The NRC staff will perform the audit to support its evaluation of whether Dominions fleet report can be approved for application to its associated plants. The NRC staffs review will be informed by NUREG-0800, Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR [Light-Water Reactor] Edition. The audit will assist the NRC staff with understanding the licensees request.
3.0 REGULATORY AUDIT SCOPE AND METHODOLOGY NRCs objectives for the audit include:
Gain a better understanding of the detailed analyses bases underlying the fleet report, and confirm the NRC staffs understanding of the proposed fleet report design and licensing basis changes.
Gain a better understanding of potential plant operational issues and analytical methods being addressed by the proposed changes.
Identify any information needed to enable the NRC staffs evaluation of the technical basis used for this application.
Identify any information needed to enable the NRC staffs evaluation of whether the proposed changes challenge design-basis functions or adversely affect the capability or capacity of plant equipment to perform design-basis functions.
Identify questions and requests that may become formal requests for additional information (RAI) per NRR Office Instruction LIC-115, Revision 1, Processing Requests for Additional Information, August 2021 (ML21141A238).
The NRC staff will audit the technical information and analytical methods that the licensee used to determine the impact on the plant.
4.0 INFORMATION AND OTHER MATERIAL NECESSARY FOR THE AUDIT The NRC staff requests the licensee to have staff and information readily available and accessible for review to:
Gain a complete understanding of the moderator temperature coefficient analytical verification methodology.
Clarify the alternative approach used for calculating the most negative MTC, including underlying assumptions and supporting analyses.
Facilitate direct discussions with licensee staff to address technical questions and identify areas requiring additional information or clarification.
Initiate the drafting of the safety evaluation, leveraging insights gained during the audit to expedite the technical review process and optimize the use of NRC resources.
Based on the review of the documents provided, the NRC staff will determine whether it needs to request any additional documents to be made available on the portal or additional information needs to be submitted on docket for the NRC staff to complete the review of the requested change. Additionally, audit questions for discussion are included at the end of this audit plan.
The NRC staff requests the licensee to collect and have the information identified above available and accessible for the NRC staffs review by the intended start date of the audit, or earlier. The NRC staff requests that any supplemental information requested be available and accessible for the NRC staffs review be provided during the audit.
The NRC staff acknowledges and will observe appropriate handling and protection of proprietary information made available for the audit. Documents reviewed during the audit will not be held or retained by NRC staff.
5.0 TEAM ASSIGNMENTS The audit team will consist of the following NRC staff from NRR:
Ed Miller,1 Division of Operating Reactor Licensing (DORL)/Plant Licensing Branch 2-1 (LPL2-1), and will be the audit team leader Joshua Kaizer, Division Safety Systems (DSS), Nuclear Methods & Fuel Analysis Branch (SNFB)
Kevin Heller, DSS/SFNB River Rohrman, DSS/SFNB 6.0 LOGISTICS To support the review schedule communicated to Dominion when the NRC staff accepted the request for technical review, audit activities will be conducted at the Dominion corporate headquarters near Richmond, VA. The NRC staff information requests and communications with licensee staff will be coordinated through the NRCs licensing project manager.
The NRCs licensing project manager will inform the licensee of the entrance and exit meeting dates when they are established. The NRC staff intend to establish audit meeting and interactions at mutually agreeable dates and times, to discuss information needs and questions arising from the NRCs review of the audited items. The NRC staff may change and/or add audit dates and times, or extend the audit, if necessary. Updates to, or additional, audit meeting agenda and questions will be sent in advance of the audit meeting.
The NRC staff requests the licensee to have the information referenced in Section 4.0 of this audit plan available and accessible for the NRC staffs review via an internet-based portal. The NRC staff requests that any supplemental information requested be available and accessible for the NRC staffs review within 5 business days of the date of the NRCs notification to the 1 Participation will be remote only.
licensee of the new requests. The NRCs licensing project manager will inform the licensee via routine communications when the NRC staff no longer needs access to the portal. The NRC staff requests the licensee to notify the NRCs licensing project manager when an audit item is added to its portal by sending an email to the NRC licensing project manager.
7.0 SPECIAL REQUESTS The NRC staff requests access to the following equipment and services:
Escorted or unescorted access to the Dominion headquarters as appropriate; Enclosed conference room (or comparable space) with a table and chairs sufficient to accommodate NRC participants and supporting licensee staff; and Computer access to any onsite electronic portal applicable for this audit (if used) or Dominion staff who can present such electronic info to NRC staff.
The NRC licensing project manager will provide the licensee with names and contact information of the NRC staff and contractors participating in the audit. All other communications should be coordinated through the NRC project manager.
8.0 DELIVERABLES The NRC staff will develop any RAI, as needed, via NRR Office Instruction LIC-115 and issue such RAI separately from audit-related correspondence. The NRC staff will issue an audit summary report prior to completing its review of the request.
ML26022A327 NRR-106 OFFICE NRR/DORL/LPLII-1/PM NRR/DORL/LPLII-1/LA NRR/DSS/SFNB/BC NAME GEMiller KZeleznock SKrepel DATE 01/22/2026 01/27/2026 1/28/2026 OFFICE NRR/DORL/LPL2-1/BC NRR/DORL/LPL2-1/PM NAME MMarkley GEMiller DATE 1/29/2026 2/3/2026