IR 05000352/2023006

Annual Assessment Letter for Limerick Generating Station, Units 1 and 2 (Reports 05000352/2023006 and 05000353/2023006)

ML24057A038
Person / Time
Site:	Limerick
Issue date:	02/28/2024
From:	Jon Greives NRC/RGN-I/DORS
To:	Rhoades D Constellation Energy Generation, Constellation Nuclear
References
IR 2023006
Download: ML24057A038 (1)

Text

February 28, 2024

David Senior Vice President Constellation Energy Generation, LLC President and Chief Nuclear Officer (CNO)

Constellation Nuclear 4300 Winfield Road Warrenville, IL 60555

SUBJECT: ANNUAL ASSESSMENT LETTER FOR LIMERICK GENERATING STATION, UNITS 1 AND 2 (REPORTS 05000352/2023 006 AND 05000353/2023 006)

Dear David Rhoades:

The U.S Nuclear Regulatory Commission (NRC) has completed its end-of-cycle performance assessment of Limerick Generating Station (Limerick), Units 1 and 2, reviewing performance indicators (PIs), inspection results, and enforcement actions from January 1, 2023 through December 31, 2023. This letter informs you of the NRCs assessment of your facility during this period and its plans for future inspections at your facility. The NRC concluded that overall performance at your facility preserved public health and safety. The baseline inspection program was completed at your facility as defined in Inspection Manual Chapter 2515, Light-Water Reactor Inspection Program - Operations Phase.

The NRC determined the performance at Limerick, Units 1 and 2, during the most recent quarter was within the Licensee Response Column (Column 1) of the NRCs Reactor Oversight Process (ROP) Action Matrix in Inspection Manual Chapter 0305, Operating Reactor Assessment Program, because all inspection findings had very low safety significance (i.e., Green), and all PIs were within the expected range (i.e., Green). Therefore, the NRC plans to conduct ROP baseline inspections at your facility.

The enclosed inspection plan lists the inspections scheduled through December 31, 2025.

The NRC provides the inspection plan to allow for the resolution of any scheduling conflicts and personnel availability issues. Routine inspections performed by resident inspectors are not included in the inspection plan. The inspections listed during the last twelve months of the inspection plan are tentative and may be revised. The NRC will contact you as soon as possible to discuss changes to the inspection plan should circumstances warrant any changes.

In addition to baseline inspections, the NRC plans to conduct Inspection Procedure 37060, 10 CFR 50.69 Risk-Informed Categorization and Treatment of Structures, Systems, and Components Inspection, and Inspection Procedure 71003, Post-Approval Site Inspection For License Renewal, at your facility. The NRC will also be performingan inspection ofyour modification of instrumentation and control systems to digitalin accordance with Inspection Procedure 52003, Digital Instrumentation and Control Modification Inspection.Thespecific schedule to be used for thisinspection is being developed by NRC staffto coincide with specific milestonesand activitiesin your project plan. NRC staff willcommunicate the specific schedulewithyouas it is identified.

In accordance with Title 10 of the Code of Federal Regulations (10 CFR) 2.390 of the NRCs Rules of Practice, a copy of this letter will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS). ADAMS is accessible from the NRC w ebsite at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Please contact me at (610) 337-5337 with any questions you have regarding this letter.

Sincerely, Jonathan E. Greives, Chief Projects Branch 4 Division of Operating Reactor Safety

Docket Nos. 05000352 and 05000353 License Nos. NPF-39 and NPF-85

Enclosure:

As stated

cc w/ encl: Distribution via LISTSERV

ML24057A038 x SUNSI Review x Non-Sensitive x Publvlle Sensitive n -Publiclyvlable

OFFICE / /

ME SH JGrv TE 2/26/2024 2/22/2024

Site Inspection Activity Plan Limerick

01/01/2024 - 12/31/2025

Unit Start End Activity CAC Title Staff Count

PI&R Biennial Team Inspection - Limerick 4

1,2 1/29/2024 2/2/2024 IP 71152B 000747 Problem Identification and Resolution

1,2 2/12/2024 2/16/2024 IP 71152B 000747 Problem Identification and Resolution

Access Control, Equipment Testing and Maintenance, Training, SPR 3

1,2 3/4/2024 3/8/2024 IP 71130.02 000734 Access Control

1,2 3/4/2024 3/8/2024 IP 71130.04 000736 Equipment Performance, Testing, and Maintenance

1,2 3/4/2024 3/8/2024 IP 71130.07 000739 Security Training

1,2 3/4/2024 3/8/2024 IP 71130.09 001656 Security Plan Changes

1,2 3/4/2024 3/8/2024 IP 71151 001338 Performance Indicator Verification

Inservice Inspection - Limerick Unit 1 1

1 4/15/2024 4/19/2024 IP 71111.08G 000701 Inservice Inspection Activities (BWR)

RP - 71124.01 Rad Hazards 1

1,2 4/15/2024 4/19/2024 IP 71124.01 000725 Radiological Hazard Assessment and Exposure Controls

RP - 71124.03 Airborne and 71124.04 Dose 1

1,2 6/3/2024 6/7/2024 IP 71124.03 000727 In-Plant Airborne Radioactivity Control and Mitigation

1,2 6/3/2024 6/7/2024 IP 71124.04 000728 Occupational Dose Assessment

License Renewal Phase 2 - Limerick Unit 1 4

1 6/10/2024 6/14/2024 IP 71003 000687 Post-Approval Site Inspection for License Renewal

1 6/24/2024 6/28/2024 IP 71003 000687 Post-Approval Site Inspection for License Renewal

FORCE-ON-FORCE PLANNING AND EXERCISE WEEKS - LIM 5

1,2 8/5/2024 8/9/2024 IP 71130.03 000735 Contingency Response - Force-On-Force Testing

1,2 8/26/2024 8/30/2024 IP 71130.03 000735 Contingency Response - Force-On-Force Testing

Commercial Grade Dedication - Limerick 3

1,2 9/16/2024 9/20/2024 IP 71111.21N.03 001808 Commercial Grade Dedication

1,2 9/30/2024 10/4/2024 IP 71111.21N.03 001808 Commercial Grade Dedication

2024 Limerick Initial Licensing Exam 5

1,2 9/23/2024 9/27/2024 OV 000956 FB-OR-ONSITE VALIDATION OF INITIAL LICENSE EXAMINATION (OV)

1,2 11/11/2024 11/22/2024 EXAD 000500 FB-OR-INITIAL LICENSE EXAM ADMINISTRATION (EXAD)

RP - 71124.06 RETS 1

1,2 10/7/2024 10/11/2024 IP 71124.06 000730 Radioactive Gaseous and Liquid Effluent Treatment

EP Program Inspection - Limerick 1

1,2 11/4/2024 11/8/2024 IP 71114.02 000717 Alert and Notification System Testing

1,2 11/4/2024 11/8/2024 IP 71114.03 000718 Emergency Response Organization Staffing and Augmentation System

Prepared on 1/18/2024 9:34:15 AM 1 of 3 Site Inspection Activity Plan

1,2 11/4/2024 11/8/2024 IP 71114.04 000719 Emergency Action Level and Emergency Plan Changes

1,2 11/4/2024 11/8/2024 IP 71114.05 000720 Maintenance of Emergency Preparedness

1,2 11/4/2024 11/8/2024 IP 71151 001397 Performance Indicator Verification

RP - 71124.08 Radwaste and 71151 PIV 1

1,2 11/4/2024 11/8/2024 IP 71124.08 000732 Radioactive Solid Waste Processing & Radioactive Material Handling, Storage, & Transportation

Comprehensive Engineering Team Inspection - Limerick 7

1,2 1/13/2025 1/17/2025 IP 71111.21M 000713 Comprehensive Engineering Team Inspection

1,2 1/27/2025 1/31/2025 IP 71111.21M 000713 Comprehensive Engineering Team Inspection

10 CFR 50.69 - Risk Informed SSC Implementation - Limerick 3

1,2 3/24/2025 3/28/2025 IP 37060 000521 10 CFR 50.69 Risk-Informed Categorization and Treatment of Structures, Systems, and Components Inspection

Inservice Inspection - Limerick Unit 2 1

2 5/5/2025 5/9/2025 IP 71111.08G 000701 Inservice Inspection Activities (BWR)

RP-71124.01 Rad Hazards 1

2 5/12/2025 5/16/2025 IP 71124.01 000725 Radiological Hazard Assessment and Exposure Controls

RP - 71124.05 Rad. Instrumentation 1

1,2 8/18/2025 8/22/2025 IP 71124.05 000729 Radiation Monitoring Instrumentation

RP - 71124.07 REMP 1

1,2 9/22/2025 9/26/2025 IP 71124.07 000731 Radiological Environmental Monitoring Program

Access Control, Protective Strategy, TSR, SPR, PIs - LIM 4

1,2 9/29/2025 10/3/2025 IP 71130.02 000734 Access Control

1,2 9/29/2025 10/3/2025 IP 71130.05 000737 Protective Strategy Evaluation

1,2 9/29/2025 10/3/2025 IP 71130.09 001656 Security Plan Changes

1,2 9/29/2025 10/3/2025 IP 71130.14 000743 Review of Power Reactor Target Sets

1,2 9/29/2025 10/3/2025 IP 71151 001338 Performance Indicator Verification

Material Control and Accounting - Limerick 1

1,2 10/27/2025 10/31/2025 IP 71130.11 000742 Material Control and Accounting (MC&A)

Limerick Requal Inspection with P/F Results 2

1,2 11/3/2025 11/7/2025 IP 71111.11A 000703 Licensed Operator Requalification Program and Licensed Operator Performance 1,2 11/3/2025 11/7/2025 IP 71111.11B 000704 Licensed Operator Requalification Program and Licensed Operator Performance

EP Exercise Inspection - Limerick 5

1,2 11/17/2025 11/21/2025 IP 71114.01 000716 Exercise Evaluation

1,2 11/17/2025 11/21/2025 IP 71151 001397 Performance Indicator Verification

2025 Limerick Initial Operator Licensing Exam 4

1,2 11/17/2025 11/21/2025 OV 000956 FB-OR-ONSITE VALIDATION OF INITIAL LICENSE EXAMINATION (OV)

Prepared on 1/18/2024 9:34:15 AM 2 of 3 Site Inspection Activity Plan

1,2 12/8/202512/12/2025 EXAD 000500 FB-OR-INITIAL LICENSE EXAM ADMINISTRATION (EXAD)

Cyber Security - Limerick 4

1,2 12/8/202512/12/2025 IP 71130.10 000741 Cybersecurity

Prepared on 1/18/2024 9:34:15 AM 3 of 3