IR 05000440/2025010
| ML25111A240 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 04/22/2025 |
| From: | Nestor Feliz-Adorno NRC/RGN-III/DORS/ERPB |
| To: | Penfield R Vistra Operations Company |
| References | |
| IR 2025010 | |
| Download: ML25111A240 (1) | |
Text
SUBJECT:
PERRY NUCLEAR POWER PLANT - LICENSE RENEWAL INSPECTION PHASE 1 REPORT 05000440/2025010
Dear Rod Penfield:
On March 31, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Perry Nuclear Power Plant and discussed the results of this inspection with you 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, Néstor J. Feliz Adorno, Chief Engineering and Reactor Projects Branch Division of Operating Reactor Safety Docket No. 05000440 License No. NPF-58
Enclosure:
As stated
Inspection Report
Docket Number:
05000440
License Number:
Report Number:
Enterprise Identifier:
I-2025-010-0048
Licensee:
Vistra Operations Company, LLC
Facility:
Perry Nuclear Power Plant
Location:
Perry, OH
Inspection Dates:
March 17, 2025 to March 31, 2025
Inspectors:
M. Domke, Senior Reactor Inspector
Approved By:
Néstor J. Feliz-Adorno, Chief
Engineering and Reactor Projects Branch
Division of Operating Reactor Safety
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a License Renewal Inspection phase 1 at Perry Nuclear Power 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.
OTHER ACTIVITIES
- TEMPORARY INSTRUCTIONS, INFREQUENT AND ABNORMAL
===71013 - Site Inspection for Plants with a Timely Renewal Application Inspectors completed phase 1 of inspection procedure 71013 for Perry Unit 1 from March 17, 2025 through March 28, 2025, while the plant was shut down for refueling outage
1R20. This allowed the inspectors to evaluate the material condition of inaccessible areas prior
to entry into the period of extended operation and perform inspections associated with aging management programs as described in their license renewal application.
This was the last scheduled outage before the expiration date of the Unit 1 original license on November 7, 2026. Perry is under timely renewal exemption throughout this inspection and up through to the period of extended operation. Therefore, the NRC invoked inspection procedure 71013 instead of 71003. Many license renewal activities encountered during this inspection period were in-progress, recently completed, or intended for completion prior to November 2026.
Inspectors walked down normally inaccessible areas of the facility looking at the structures, systems, and components for signs of aging, such as corroded piping, water intrusion, or structural degradation. Inspectors also observed the completion of license renewal examinations for very low frequency cable testing and piping internals examinations during valve replacement efforts.
Site Inspection for Plants with a Timely Renewal Application===
- (1) Commitment 32, the Non-EQ (environmental qualification) Inaccessible Power Cables is an existing Cable Aging Management program. In-scope power cables (greater or equal to 400V) in inaccessible or underground locations exposed to significant moisture are tested to provide an indication of the condition of the conductor insulation. Inspectors observed the performance of cable testing work order 200906508 which performed very low frequency testing (VLF) testing on equipment PYRIT007.
Commitment 35, One-Time Inspection (OTI) Program is a new program that includes one-time inspection of selected components to verify the effectiveness of Fuel Oil Chemistry, Lubricating Oil Analysis, and the Water Chemistry aging management programs which are designed to prevent or minimize aging to the extent that it will not cause the loss of intended function during the period of extended operation. The elements of the program include
- (a) determination of the sample size of components to be inspected based on an assessment of materials of fabrication, environment, plausible aging effects, and operating experience,
- (b) identification of the inspection locations in the system or component based on the potential for the aging effect to occur,
- (c) determination of the examination technique, including acceptance criteria that would be effective in managing the aging effect for which the component is examined, and
- (d) an evaluation of the need for follow-up examinations to monitor the progression of aging if age-related degradation is found that could jeopardize an intended function before the end of the period of extended operation. Inspectors reviewed aging management procedures, interviewed site personnel and observed 4 OTI exams during the inspection period: 3 in the drywell and 1 in the Low Pressure Core Spray room via work order 200869693 for components 1B21F0564, 1B21F0575, 1B21F0577, and 1B21PipingD2 and work order 200679637 for components 1E12F0084A, 1E12F0085A, and 1E12PIPINGG1-2, respectively.
Commitment 36, One-Time Inspection of ASME Code Class 1 Small Bore Piping is a new condition monitoring program that will manage cracking of piping in a reactor coolant environment. The program performs one-time inspection of a sample of ASME code class 1 piping less than 4-inches nominal pipe size (NPS) and greater than or equal to 1-inch NPS. Inspectors reviewed condition report CR-2023-0194 and associated documents which identified 3 relevant indications during ultrasonic examination of socket welds. Engineering laboratory analysis determined welds 1N22-0106, -0107, and -0108 contained indications at top dead center due to manufacturing defects. The station subsequently replaced all welds.
Commitment 42, Selective Leaching Program is a new condition monitoring, aging managment program that ensures the integrity of components that are susceptible to loss of material due to selective leaching, or dealloying, by demonstrating the absence of such leaching. The Selective Leaching Program identifies the aging effects of loss of material due to selective leaching for components subject to an environment of raw, chemically untreated, water, closed-cycle cooling water, treated water, waste water, soil or condensation. Inspectors evaluated the implementation of this new program by documentation reviews and interviews with site engineers and management.
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On March 31, 2025, the inspectors presented the License Renewal Inspection phase 1 results to Rod Penfield and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Corrective Action
Documents
CR-2023-01964
Three Relevant Indications Identified During Ultrasonic
Examination of Socket Welds
03/15/2023
1042-25B-005
Visual Exam of Equipment and Components
03/20/2025
NDE Reports
1042-25B-008
Visual Exam of Equipment and Components
03/25/2025
GEI-0163
Medium Volatage Shielded Cable Testing
LRPY-AMP-XI.E3
Non-EQ Inaccessible Power Cables Program
LRPY-AMP-
XI.M32
One-Time Inspection Program
LRPY-AMP-
XI.M33
Selective Leaching Program
LRPY-AMP-
XI.M35
One-Time Inspection of ASME Code Class 1 Small Bore
Piping Program
PAP-1931
One-Time Inspection Program
Procedures
PAP-1936
Selective Leaching Aging Management Program
200866031
Order to Perform License Renewal Small Bore Socket and
Butt Weld Examinations on The N22 System
03/20/2023
200869706
In Support of License Renewal One-Time Inspection
Program per PAP-1931
2/23/2025
200882175
Perform Required License Renewal Examinations on Unit 1
Containment EDS Sump Pump A PY-1G61C00002A CI for
Selective Leaching
08/13/2024
200906508
Medium Voltage Shielded Cable Testing Data Sheets
03/20/2025
71013
Work Orders
200923558
In Support of the License Renewal Selective Leaching
Program, Hydrant 1 (0P54D0539) is to Be Excavated and
Replaced
2/25/2024