IR 05000352/2025405
| ML25356A010 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 12/22/2025 |
| From: | Brice Bickett Division of Operating Reactors |
| To: | Mudrick C Constellation Energy Generation, Constellation Nuclear |
| References | |
| IR 2025405 | |
| Download: ML25356A010 (0) | |
Text
December 22, 2025
SUBJECT:
LIMERICK GENERATING STATION, UNITS 1 AND 2 - SECURITY BASELINE INSPECTION REPORT 05000352/2025405 AND 05000353/2025405
Dear Christopher Mudrick:
On December 11, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Limerick Generating Station, Units 1 and 2, and discussed the results of this inspection with Mike Gillin, Site Vice President, 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, Brice A. Bickett, Chief Security, Emergency Preparedness and Incident Response Branch Division of Radiological Safety and Security
Docket Nos. 05000352 and 05000353 License Nos. NPF-39 and NPF-85
Enclosure:
As stated
Inspection Report
Docket Numbers:
05000352 and 05000353
License Numbers:
Report Numbers:
05000352/2025405 and 05000353/2025405
Enterprise Identifier: I-2025-405-0005
Licensee:
Constellation Energy Generation, LLC
Facility:
Limerick Generating Station, Units 1 and 2
Location:
Sanatoga, PA 19464
Inspection Dates:
December 8, 2025 to December 11, 2025
Inspectors:
C. Bickett, Senior Reactor Analyst
J. Kepley, Operations Engineer
J. Edwards, Physical Security Inspector
T. Eck, Senior Physical Security Inspector
Approved By:
Brice A. Bickett, Chief
Security, Emergency Preparedness and Incident Response Branch
Division of Radiological Safety and Security
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a security baseline inspection at Limerick Generating Station,
Units 1 and 2, 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) 2201, Security Inspection Program for Commercial Nuclear Power Reactors. 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.
SAFEGUARDS
71130.02 - Access Control
The inspectors evaluated the access control program through completion of the following
===inspection elements:
Access Control===
(1)19 Requirements (02.01 a - e, 02.02 a - g, 02.04 e, 02.05 a, 02.06 a and c, 02.08 e and i, 02.09)
71130.05 - Protective Strategy Evaluation
The inspectors evaluated the licensee's protective strategy through completion of the following procedure elements:
Protective Strategy Evaluation (2 Samples)
(1)23 Requirements (02.01 a - e, h, k, 02.02 a, b, f, 02.03 a, 02.04 a - c, 02.06 a, d - f, h, i, n, 02.07 d, 02.08)
- (2) The inspectors evaluated the Security Performance Evaluation Program.
71130.09 - Security Plan Changes
The inspectors evaluated the security plan changes through completion of the following
===procedure elements:
Security Plan Changes===
- (1) Since the last NRC baseline inspection of this program area, Security Plan Revision 24 to 25 was implemented. Based on Limerick Generating Station's evaluation, and in accordance with 10 CFR 50.54(p)(2), the change(s) resulted in no decrease in safeguards effectiveness of the security plan and the revised security plan change(s) continues to meet the requirements of 10 CFR 73.55(b). The inspector(s) conducted a review of the security plan change(s) to evaluate for a potential decrease in safeguards effectiveness of the security plan; however, this review does not constitute formal NRC approval of those change(s). Therefore, the change(s) remain subject to future NRC inspection in their entirety.
71130.14 - Review of Power Reactor Target Sets
The inspectors evaluated the Security Target Set Program. The following elements were
===evaluated:
Review of Power Reactor Target Sets===
(1)8 Requirements (03.02 a - e, 03.03 a, 03.04 a and b)
OTHER ACTIVITIES - BASELINE
===71151 - Performance Indicator Verification
The inspectors verified licensee performance indicators submittals listed below:
PP01: Protected Area Security Equipment Performance Index Sample (IP Section 02.17)
=
- (1) January 1, 2025 through December 11,
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified that no proprietary information was retained or documented in this report.
- On December 11, 2025, the inspectors presented the security baseline inspection results to Mike Gillin, Site Vice President, and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Procedures
SY-AA-101-112-
104
Protected Area Search Process
Revision 0
Processing and Escorting of Personnel and Vehicles
Revision 34
Control of Security Access Control Devices
Revision 10
SY-LG-101-124
Duties and Responsibilities of Security Control Centers and
Security Supervision at Limerick Generating Station
Revision 17
Calculations
3977178-C-101
Vehicle Barrier System Reconfiguration and Blast Effects
Vulnerability Assessment
Revision 1
GLIMM-9000-CN-
GS-000001
Limerick Generating Station Blast Effect and Vehicle Speed
Calculation
Revision 0-A
Corrective Action
Documents
04842203
04892214
04900534
04831626
04842444
04848311
04870957
04894369
Corrective Action
Documents
Resulting from
Inspection
04920593
04920595
04920598
04920600
Miscellaneous
11/29/23
2/10/24
Security Drills and Exercises
Revision 1
Procedures
Conducting Patrols
Revision 018
Safety/Security Interface
Revision 7
SY-LG-101-102
Security System Component Degradation Compensatory
Measures
Revision 017
SY-LG-101-116
Conducting Security Patrols
Revision 007
Procedures
Limerick Physical Security Plan
Revision 025
Miscellaneous
NOSA-LIM-25-01
Security Programs Audit Report
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Procedures
Security Threat
Revision 28
Safety/Security Interface
Revision 7
SY-LG-101-502
Limerick Generating Station Security Target Sets
Revision 8