ML25344A462

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Focused Engineering Inspection Age Related Report 05000324/2025010 and 05000325/2025010
ML25344A462
Person / Time
Site: Brunswick  
Issue date: 12/11/2025
From: Marcus Riley
NRC/RGN-II/DORS/EB1
To: Krakuszeski J
Duke Energy Progress
References
IR 2025010
Download: ML25344A462 (0)


Text

John A. Krakuszeski Site Vice President Duke Energy Progress, LLC 8470 River Rd. SE (M/C BNP001)

Southport, NC 28461

SUBJECT:

BRUNSWICK STEAM ELECTRIC PLANT - FOCUSED ENGINEERING INSPECTION (AGE-RELATED) REPORT 05000324/2025010 AND 05000325/2025010

Dear John A. Krakuszeski:

On September 25, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Brunswick Steam Electric Plant and discussed the results of this inspection with Jacob Cottle III - Acting Brunswick Engineering General Manager and other members of your staff. The results of this inspection are documented in the enclosed report.

No findings or violations of more than minor significance were identified during this inspection.

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 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.

December 11, 2025

J. Krakuszeski 2

This letter, its enclosure, and your response (if any) 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.

Sincerely, Marcus A. Riley, Chief Engineering Branch 1 Division of Operating Reactor Safety Docket Nos. 05000324 and 05000325 License Nos. DPR-62 and DPR-71

Enclosure:

As stated cc w/ encl: Distribution via LISTSERV Signed by Riley, Marcus on 12/11/25

ML25344A462 X

SUNSI Review X

Non-Sensitive

Sensitive X

Publicly Available

Non-Publicly Available OFFICE RII/DORS RII/DORS NAME T. Su M. Riley DATE 12/10/2025 12/11/2025

Enclosure U.S. NUCLEAR REGULATORY COMMISSION Inspection Report Docket Numbers:

05000324 and 05000325 License Numbers:

DPR-62 and DPR-71 Report Numbers:

05000324/2025010 and 05000325/2025010 Enterprise Identifier:

I-2025-010-0035 Licensee:

Duke Energy Progress, LLC Facility:

Brunswick Steam Electric Plant Location:

South Port, NC Inspection Dates:

September 08, 2025 to September 25, 2025 Inspectors:

P. Braxton, Reactor Inspector D. Burgess, Reactor Inspector T. Su, Senior Reactor Inspector Approved By:

Marcus A. Riley, Chief Engineering Branch 1 Division of Operating Reactor Safety

2

SUMMARY

The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a focused engineering inspection (age-related) at Brunswick Steam Electric Plant, in accordance with the Reactor Oversight Process. The Reactor Oversight Process is the NRCs program for overseeing the safe operation of commercial nuclear power reactors. Refer to https://www.nrc.gov/reactors/operating/oversight.html for more information.

List of Findings and Violations No findings or violations of more than minor significance were identified.

Additional Tracking Items None.

3 INSPECTION SCOPES Inspections were conducted using the appropriate portions of the inspection procedures (IPs) in effect at the beginning of the inspection unless otherwise noted. Currently approved IPs with their attached revision histories are located on the public website at http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/index.html. Samples were declared complete when the IP requirements most appropriate to the inspection activity were met consistent with Inspection Manual Chapter (IMC) 2515, Light-Water Reactor Inspection Program - Operations Phase. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel to assess licensee performance and compliance with Commission rules and regulations, license conditions, site procedures, and standards.

REACTOR SAFETY 71111.21N.04 - Age-Related Degradation Age-Related Degradation (8 Samples)

(1)

Portion of Service Water Building Concrete Submerged Under Seawater (2)

Service Water Piping Including Underground Piping and Cathodic Protection (3)

Unit 2 Core Spray Pump 2A (4)

Unit 2 EDG2 Electrical Control System (5)

Capacitors (Various Systems)

(6)

Unit 1 and Unit 2 ADS/SRV (7)

NSW 2A Pump Motor (8)

Unit 2 Inverter/UPS 2B INSPECTION RESULTS No findings were identified.

EXIT MEETINGS AND DEBRIEFS The inspectors verified no proprietary information was retained or documented in this report.

On September 25, 2025, the inspectors presented the focused engineering inspection (age-related) results to Jacob Cottle III - Acting Brunswick Engineering General Manager and other members of the licensee staff.

4 DOCUMENTS REVIEWED Inspection Procedure Type Designation Description or Title Revision or Date Calibration Records BNP Buried Piper Rectifier Data BNP Buried Piper Rectifier Data Rev 1

00483679, 00607846,
00737292, 02129416,
02265786, 02321942,
02343883, 02372869,
02265786, 02317682,
02321942, 02343883,
02317682, 00253773,
02308597, 02320794, 02462552-01,
02499358, Various 0BNP-TR-046 License Renewal Inaccessible Medium Voltage Cables not Subject to 10 CFR 50.49 Environmental Qualification Requirements Program Aging Management Program 2

Corrective Action Documents Action Request-00553147 IN 2012-11, Age-Related Capacitor Degradation 8/3/2012 F-03003 4160 Emergency System Switchgear E3 & E4 Auxiliary One Line Diagram Sheet 35 21 F-03027 120/208V - 50KVA Uninterruptible Power System Single Line Diagram 76 F-09345 Diesel Generator No. 1 Circuits Control Wiring Diagram Sheet 1 51 71111.21N.04 Drawings F-09345 Diesel Generator No. 1 Circuits Control Wiring Diagram 34

5 Inspection Procedure Type Designation Description or Title Revision or Date Sheet 3 F-09345 Diesel Generator No. 1 Circuits Control Wiring Diagram Sheet 2 57 LL-09113 4160 Volt Switchgear E3 Compartment AJ3-Nuclear service Water Pump 2A Control Wiring Diagram 13 LL-09113 4160 Switchgear E3 Compartment AJ3-Nuclear Service water Pump 2A Cable Diagram Sheet 73 12 CTL PC 263563 Evaluation of Service Water Intake Structure 01/07/2022 Engineering Evaluations PMR 739070 Evaluation of updates to cathodic protection periodic maintenance/monitoring 1

2554718 BNP Age Related Self-Assessment 2025 05/12/2025 3109538 Purchase Order 2

3127795 Purchase Order 1

3139459 Purchase Order 2

3163295 Purchase Order 6

BNP 048-012 Specification for Installation of Electric Cables 44 FP-20322 Diesel Engine Instruction Manual 00T FP-82073 Power Supply, Uninterruptible, Lighting and Communications System K

LTAM BNP 0210 SWB Bridging Strategy Rev 1 Miscellaneous NACE SP0169 Control of External Corrosion on Underground or Submerged Metallic Piping Systems 05/08/2024 0-BNP-TR-60 License Renewal Structures Monitoring Program 10/4/2023 0BNP-TR-034 Buried Piping License Renewal Strategy 01/16/2024 0SPP-CBL011 Splicing of Wires and Cables Without Tape 16 AD-EG-ALL-1213 System Walkdowns 6

AD-EG-ALL-1615 Cable Aging Management Program - Implementation 6

AD-EG-BNP-1213 BNP Specific Requirements for System Walkdowns 3

AG-EG-BNP-1214 Condition Monitoring of Structures Rev 4 Procedures DBD-43 Service Water System 021

6 Inspection Procedure Type Designation Description or Title Revision or Date FP-3202 Motors, Vertical Induction 00F 20106008-01, 20152170-04, 20152170-05,

20737753, 13468933-01, 20528653-01, 20566369-01, 20573072-01, 20743575-01,
20601157, 20482211, 20666702-01, 20460550-01, 20424020-01, Various 20501504-01 Annual maintenance rule AD-EG-ALL-1214 inspection 11/07/2023 20549594-01 Annual maintenance rule AD-EG-ALL-1214 inspection 05/29/2024 Work Orders 20711386 Cathodic Protection Rectifier, Record Voltage/Current 03/19/2025