ML26035A162

– Partial Withdrawal of an Amendment Request

ML26035A162
Person / Time
Site:	Limerick
Issue date:	02/12/2026
From:	Audrey Klett NRC/NRR/DORL/LPL1
To:	Mudrick C Constellation Energy Generation
Shared Package
ML26035A160	List: ML26035A162
References
EPID L-2025-LLA-0126
Download: ML26035A162 (0)

Text

February 12, 2026 Mr. Christopher H. Mudrick Sr.

Senior Vice President Constellation Energy Generation, LLC President and Chief Nuclear Officer Constellation Nuclear 200 Exelon Way Kennett Square, PA 19348

SUBJECT:

LIMERICK GENERATING STATION, UNIT 1 - PARTIAL WITHDRAWAL OF AN AMENDMENT REQUEST (EPID L-2025-LLA-0126)

Dear Mr. Mudrick:

By letter LG-25-063 dated August 8, 2025 (non-public), as supplemented by letter LG-25-063R1 dated August 15, 2025 (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML25227A183),1 Constellation Energy Generation, LLC (the licensee) applied for amendments to Renewed Facility Operating License Nos. NPF-39 and NPF-85 for the Limerick Generating Station (Limerick), Units 1 and 2. The licensee requested the U.S. Nuclear Regulatory Commission (NRC) to modify the facility technical specifications to allow a one-time extension to performing the containment integrated leakage rate test, which is required to be performed every 15 years.

On December 30, 2025, a notice of consideration of issuance of amendment and proposed no significant hazards consideration determination was published in the Federal Register (90 FR 61172) for the license amendment requests.

Subsequently, by letter LG-26-030 dated January 30, 2026 (ML26030A249), the licensee withdrew the amendment request for Limerick, Unit 1 only, and supplemented the application for Limerick, Unit 2.

The purpose of this letter is to notify the licensee that the NRC is treating the above-cited license amendment request for Limerick, Unit 1, as withdrawn. The NRC staff is continuing its review of the license amendment request for Limerick, Unit 2.

1 The licensees supplement dated August 15, 2025, is a publicly available version of the application dated August 8, 2025, which contains personally identifiable information.

Regarding the above-cited amendment request for Uniti 1, the NRC staff has filed the enclosed Notice of Partial Withdrawal of Application for Amendment to Facility Operating License with the Office of the Federal Register for publication.

Sincerely,

/RA/

Audrey Klett, Senior Project Manager Plant Licensing Branch I Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No.52-352

Enclosure:

Notice of Partial Withdrawal cc: Listserv

ENCLOSURE FEDERAL REGISTER NOTICE

[7590-01-P]

NUCLEAR REGULATORY COMMISSION

[Docket No. 50-352; NRC 2026-0859]

Constellation Energy Generation, LLC; Limerick Generating Station, Unit 1; License Amendment Application; Partial Withdrawal by Applicant AGENCY: Nuclear Regulatory Commission.

ACTION: Notice.

SUMMARY

The U.S. Nuclear Regulatory Commission (NRC) has granted the request of Constellation Energy Generation, LLC (Constellation, the licensee) to withdraw the portion of its application dated August 8, 2025, as supplemented by letter dated August 15, 2025, that proposed an amendment to Renewed Facility Operating License No. NPF-39. The licensee withdrew its request to modify the facility technical specifications to allow a one-time extension to performing the containment integrated leakage rate test, which is required to be performed every 15 years.

DATES: This document was published in the Federal Register on [INSERT DATE OF PUBLICATION IN THE FEDERAL REGISTER].

ADDRESSES: Please refer to Docket ID NRC-2026-0859 when contacting the NRC about the availability of information regarding this document. You may obtain publicly available information related to this document using any of the following methods:

Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC-2026-0859. Address questions about Docket IDs in Regulations.gov to Bridget Curran; telephone: 301-415-1003; email:

2 Bridget.Curran@nrc.gov. For technical questions, contact the individual(s) listed in the For Further Information Contact section of this document.

NRCs Agencywide Documents Access and Management System (ADAMS): You may obtain publicly available documents online in the ADAMS Public Documents collection at https://www.nrc.gov/reading-rm/adams.html. To begin the search, select Begin ADAMS Public Search. For problems with ADAMS, please contact the NRCs Public Document Room (PDR) reference staff at 1-800-397-4209, at 301-415-4737, or by email to PDR.Resource@nrc.gov. The ADAMS accession number for each document referenced (if it is available in ADAMS) is provided the first time that it is mentioned in this document.

NRCs PDR: The PDR, where you may examine and order copies of publicly available documents, is open by appointment. To make an appointment to visit the PDR, please send an email to PDR.Resource@nrc.gov or call 1-800-397-4209 or 301-415-4737, between 8 a.m. and 4 p.m. eastern time (ET), Monday through Friday, except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Audrey L. Klett, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001; telephone: 301-415-0489; email: Audrey.Klett@nrc.gov.

SUPPLEMENTARY INFORMATION:

The NRC has granted Constellations request dated January 30, 2026 (ADAMS Accession No. ML26030A249), to withdraw the portions of its application dated August 8, 2025 (non-public), as supplemented by letter dated August 15, 2025 (ADAMS Accession No. ML25227A183), that are applicable to Renewed Facility Operating License No. NPF-39 for the Limerick Generating Station, Unit 1, located in Limerick, Pennsylvania. The licensees supplement dated August 15, 2025, is a publicly available

3 version of the application dated August 8, 2025, which contains personally identifiable information.

The licensee requested the NRC to modify the facility technical specifications to allow a one-time extension to performing the containment integrated leakage rate test, which is required to be performed every 15 years. The portions of the request that are applicable to Renewed Facility Operating License No. NPF-85 for the Limerick Generating Station, Unit 2, have not been withdrawn.

A notice of consideration of issuance and proposed no significant hazards consideration determination for the license amendment request was published in the Federal Register (90 FR 61169) on December 30, 2025.

Dated: February 13, 2026.

For the Nuclear Regulatory Commission.

/RA/

Audrey Klett, Senior Project Manager, Plant Licensing Branch I, Division of Operating Reactor Licensing, Office of Nuclear Reactor Regulation

SUBJECT:

LIMERICK GENERATING STATION, UNIT 1 - PARTIAL WITHDRAWAL OF AN AMENDMENT REQUEST (EPID L-2025-LLA-0126) DATED FEBRUARY 12, 2026 DISTRIBUTION:

PUBLIC RidsACRS_MailCTR Resource RidsNrrDorl Resource RidsNrrDorlLPL1 Resource RidsNrrLASLent Resource RidsNrrPMLimerick Resource RidsRgn1MailCenter Resource ADAMS Accession Nos.:

Package: ML26035A160 FRN (ADM-012): ML26035A161 LTR: ML26035A162

• via eConcurrence NRR-106 OFFICE NRR/DORL/LPL1/PM NRR/DORL/LPL3/LA NRR/DORL/LPL1/BC NAME AKlett SLent UShoop DATE 02/4/2026 02/9/26 02/12/26 OFFICE NRR/DORL/LPL1/PM NAME AKlett DATE 02/12/26 OFFICIAL AGENCY RECORD