IR 05000261/2025010
| ML25265A054 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 09/22/2025 |
| From: | Marcus Riley NRC/RGN-II/DORS/EB1 |
| To: | Basta L Duke Energy Progress |
| References | |
| IR 2025010 | |
| Download: ML25265A054 (10) | |
Text
SUBJECT:
H.B. ROBINSON STEAM ELECTRIC PLANT - FOCUSED ENGINEERING INSPECTION (AGE-RELATED DEGRADATION) REPORT 05000261/2025010
Dear Laura Basta:
On August 28, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at H.B. Robinson Steam Electric Plant and discussed the results of this inspection with Winston Stewart 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.
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, Acting Chief Engineering Branch 1 Division of Operating Reactor Safety Docket No. 05000261 License No. DPR-23
Enclosure:
As stated
Inspection Report
Docket Number:
05000261
License Number:
Report Number:
Enterprise Identifier:
I-2025-010-0034
Licensee:
Duke Energy Progress, LLC
Facility:
H.B. Robinson Steam Electric Plant
Location:
Hartsville, SC
Inspection Dates:
August 11, 2025, to August 28, 2025
Inspectors:
J. Copeland, Reactor Inspector
L. Day, Reactor Inspector
J. Zeiler, Senior Resident Inspector
Approved By:
Marcus A. Riley, Chief
Engineering Branch 1
Division of Operating Reactor Safety
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a focused engineering inspection (age-related degradation) at H.B.
Robinson 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.
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
For each sample listed below, inspectors reviewed licensee activities credited to address age-related degradation to assess whether they were being performed using appropriate standards and procedures, assessed against appropriate acceptance criteria, and that maintenance was being performed at an appropriate interval. Inspectors assessed whether issues identified during licensee activities were being appropriately entered into and addressed by the station corrective action program, and whether periodic assessments of maintenance effectiveness and operating experience were being completed.
- (1) Main Feedwater Isolation Valves including Motor and Limitorque Actuators (2)
"A" and "A-1" 125-Volt DC Battery Chargers (3)480-Volt AC Load Center Breakers52-17B and 52-19C [for "A" Emergency Diesel Generator (EDG) Output Breaker and "B" Service Water Pump Motor]
- (4) EDG Fuel Oil Storage Tank Structures Monitoring (5)
"A" EDG Fuel Oil Underground Suction Piping
- (6) Reactor Coolant System Safety-Related Rosemount Flow Transmitters
- (7) Steam Driven Auxiliary Feedwater (SDAFW) Pump Undervoltage Actuation Relay 2(B)/SDAFW-PMP (8)
"B" Service Water Pump/Motor
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On August 28, 2025, the inspectors presented the focused engineering inspection (age-related degradation) results to Winston Stewart and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
RNP-C/STRS-
1143
DG Fuel Oil Piping Outside DG Building
Rev. 2
RNP-C/STRS-
1146
Fuel Oil Piping from DFOST through Fuel Oil Transfer
Pump to Ground
Rev. 1
RNP-C/STRS-
1196
Unit 2 DFOST Miscellaneous Fuel Oil Piping - External
Rev. 3
RNP-L/LR-0629
Aging Management Program Buried Piping and Tanks
Surveillance Program
Rev. 1
RNP-M/Mech-
244
Set Up Calculation for MOV FW-V2-6A
Rev. 17
RNP-M/Mech-
245
Set Up Calculation for MOV FW-V2-6B
Rev. 15
RNP-M/Mech-
1398
Evaluation of Static and Dynamic Test Data for FW-V2-6A
Rev. 2
Calculations
RNP-M/Mech-
1399
Evaluation of Static and Dynamic Test Data for FW-V2-6B
Rev. 2
Corrective Action
Documents
Nuclear Condition
Reports (NCRs)
2439945, 2397560, 2535314, 2546881, 2327596,
27630, 2481751, 2564542, 2340573, 0634909,
2167161, 2207668, 2313387, 2314583, 2317123,
26615, 2327866, 2369685, 2414902, 2421523,
2470236, 2476944, 2478167, 2482768, 2483873,
21257, 2532943, 2550640, 2551888
NCR 2564937
25 ARD NRC Inspection: Feedwater System License
Renewal Walkdown Documentation
NCR 2565087
Permanent Spill Containment Level Control (AD-EN-ALL-
210)
NCR 2565390
Engineering Adverse Trend with System Walkdowns
NCR 2565513
Improvement in the Location of Protective Measures (OP-
909)
NCR 2566328
Historical work order quality/PU&A gap identified during
25 ARD Inspection
71111.21N.04
Corrective Action
Documents
Resulting from
Inspection
NCR 2566505
Discrepancy Between Field Configuration and Drawings
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
(2025 NRC ARD Inspection)
Procedure
Revision Request
(PRR) 2566123
Correct Technical Inaccuracies in Preventive Maintenance
Procedure PM-173
PRR 2566296
Revise Procedure PM-M-FO-PIPE-001 to Clarify/Enhance
Acceptance Criterion
Work Request
(WR) 20292682
Remount Charging Pump-B/Breaker 52/21B Runtime
Meter
Steam Driven AFW Pump Drain appears plugged
Repair/Replace Bent Insulation Downstream of FW-7B
Replace Live Load Packing in FW-V2-6A in R038
Touch-Up Coatings on FW-V2-6's Valve Yokes
DFOST Inlet Valve FO-13 Repair/Paint Showing
Corrosion due to Water Submergence
Clean and Repair Coatings Around Base of DFOST
Repair Coatings of 2-FO-60A and 2-FO-60B
5379-01555
Diesel Fuel Oil Storage Tank
Rev. 3
CP & L Dwg. No.
5379-385
x 14 x 16 L-900 W.E.O.S. Pressure Seal Gate Valve
10/15/1999
G-190199
SH00002
SERVICE AND COOLING WATER SYSTEM FLOW
DIAGRAM
Rev. 73
G-190204D
SH00001
Fuel Oil System Flow Diagram
Rev. 28
G-190204D
SH00002
Fuel Oil System Flow Diagram
Rev. 31
G-190204D
SH00003
Fuel Oil System Flow Diagram
Rev. 24
G-190204D
SH00004
Fuel Oil System Flow Diagram
Rev. 1
G-190236
Emergency Diesel Generator Piping
Rev. 11
G-190778
SH00001
Yard Piping
Rev. 18
Drawings
HBR2-11760
SH00001
Cathodic Protection System Underground Fuel Oil and
Natural Gas Piping Units 1 and 2
Rev. 7
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Change Station Curve Book for DFOST level
Rev. 0
Update EDG and Documents for Cathodic Protection
System Anode Designations
Rev. 0
Engineering
Changes
Neles-Jamesbury EDG Fuel Oil Ball Valve Replacement
Rev. 0
88-140
Engineering Evaluation: Live Loading of Valve Stem
Packing Throughout Unit 2
11/14/1988
AD-EG-RNP-
213 Att. 1
System Walkdown Review: Feedwater (3050)
2/15/2022
AD-EG-RNP-
213 Att. 1
System Walkdown Review: 5235 - 125 Vdc
07/10/2024
Engineering
Evaluations
AD-EG-RNP-
213 Att.1
System Walkdown Review: System 3050 - Feedwater
11/26/24
00809-0100-4514
Model 1154 Alphaline Nuclear Pressure Transmitter
Vendor Manual
Rev. AA
28-652-56
Cathodic Protection System (Units 1 & 2) Vendor Manual
Rev. 4
740-523-74
Neles-Jamesbury Fuel Oil Ball Valves Vendor Manual
Rev. 5
AD-EG-RNP-
213 Att. 1
License Renewal Walkdown, Service Water
04/29/2024
AD-EG-RNP-
213 Att. 1
License Renewal Walkdown, Feedwater (R2C34)
Rev. 9
BLD Inspection
Service Report
DFOST API-653 Tank Inspection and Integrity
Assessment (inspection conducted 11/29-30/2022)
EQDP - 0404
ENVIRONMENTAL QUALIFICATION DOCUMENTATION
PACKAGE for 3150-N Series Rosemount Transmitters
Rev. 4
FA2500194946
RCS Rosemount Flow Transmitter Failure Analysis
Report
05/02/2025
RNP-RA/03-0031
Licensee Letter to USNRC: Response to Request for
Additional Information Regarding Application for Renewal
of Operating License
10/28/2003
Miscellaneous
System
Description (SD)-
005
Emergency Diesel Generator System Description
Rev. 17
NDE Reports
V2-6A 2024-11-
MOV Inservice Test Evaluation
11/20/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
AD-DC-ALL-0002
Records Management
Rev. 17
AD-EG-ALL-1213
System Walkdowns
Rev. 6
AD-EG-ALL-1214
Condition Monitoring of Structures
Rev. 1
AD-EG-ALL-1613
Buried Piping Integrity Program Implementation
Rev. 8
AD-EG-ALL-1650
License Renewal Aging Management
Rev. 5
AD-EG-RNP-
213
RNP Specific Requirements for System Walkdowns
Rev. 9
AD-EG-RNP-
214
Condition Monitoring of Structures
Rev. 10
AD-EG-RNP-
1650
License Renewal Aging Management Activities
Rev. 7
AD-EN-ALL-0210
Oil Spill Prevention, Control and Countermeasure (SPCC)
Rule Compliance
Rev. 6
AD-LS-ALL-0018
Evaluating and Reporting of Defects and Noncompliance
in Accordance with 10CFR21
Rev. 4
AD-OP-ALL-0204
Plant Status Control
Rev. 9
MMM-046
Valve Packing Reference Manual
Rev. 28
Fuel Oil System
Rev. 65
OST-022
Weekly Surveillances
Rev. 30
OST-302-1
Service Water Pumps A & B Inservice Test
Rev. 94
OST-302-3
Comprehensive Flow Test for Service Water Pumps A &
B
Rev. 52
OST-402-1
EDG A Diesel Fuel Oil System Flow Test
Rev. 43
OST-402-1
Completed Surveillances on 03/31/2025 and 06/30/2025
OST-402-2
EDG B Diesel Fuel Oil System Flow Test
Rev. 52
OST-402-2
Completed Surveillances on 05/22/2025 and 07/10/2025
OST-408
Diesel Fuel Oil Storage Tank Drain
Rev. 18
Fuel Oil Transfer Piping Leak Check (pre-06/19/2013)
Rev. 14
PM-E-CATH-
MISC-001
Cathodic Protection System Soil to Structure Potential
Measurement Test
Rev. 3
Procedures
PM-E-CATH-
RCTFR-001
Cathodic Protection System Rectifier Inspection and
Cleaning
Rev. 3
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
PM-M-FO-PIPE-
001
Fuel Oil Transfer Piping Leak Check
Rev. 11
TE-MN-ALL-0510
Excavation and Backfill
Rev. 3
SAST 2167161
Self-Assessment of License Renewal Program
11/21/2017
Self-
Assessments
SAST 2332207
RNP License Renewal Self-Assessment
11/08/2022
Work Orders
89DLF404, 20626085, 20725439, 20725440, 20726856,
20729902, 20695437, 13532657, 20094272, 20383092,
20387119, 20454101, 20460569, 20515367, 20528669,
20544889, 20545792, 20575198, 20595015, 20609842,
20617225, 20627814, 20633393, 20636206, 20679283,
20682322, 20693847, 20742573