ML24151A259

May 22, 2024, Summary of Closed Meeting with Constellation Energy Generation, LLC, Related to the LAR to Support Replacement of Existing Safety-Related Analog Control Systems with a Single Digital Plant Protection System

ML24151A259
Person / Time
Site:	Limerick
Issue date:	06/03/2024
From:	Robert Kuntz Plant Licensing Branch 1
To:	Constellation Energy Generation
Klett, AL
References
EPID L-2022-LLA-0140
Download: ML24151A259 (4)

Text

June 3, 2024 LICENSEE:

Constellation Energy Generation, LLC FACILITY:

Limerick Generating Station, Units 1 and 2

SUMMARY

OF MAY 22, 2024, CLOSED MEETING WITH CONSTELLATION ENERGY GENERATION, LLC, RELATED TO THE LICENSE AMENDMENT REQUEST TO SUPPORT REPLACEMENT OF EXISTING SAFETY-RELATED ANALOG CONTROL SYSTEMS WITH A SINGLE DIGITAL PLANT PROTECTION SYSTEM (EPID L-2022-LLA-0140)

On May 22, 2024, a closed meeting was held between the U.S. Nuclear Regulatory Commission (NRC), and representatives of Constellation Energy Generation, LLC (Constellation). The purpose of the meeting was for the NRC staff to discuss with Constellation a license amendment request for Limerick Generating Station, Units 1 and 2 (Limerick) dated September 26, 2022 (non-publicly available). The proposed amendment requests would change both the design and technical specifications to permit the use of a new single digital instrumentation and controls system to replace analog instrumentation of reactor protection system, analog nuclear steam supply shutoff system, emergency core cooling system, reactor core isolation cooling system, and end-of-cycle recirculation pump trip at Limerick. In addition, the proposed amendments would change the classification of the redundant reactivity control system from safety-related to non-safety-related, eliminate the automatic redundant reactivity control system feedwater runback function, eliminate the automatic isolation function for the turbine enclosure main steam line tunnel temperature high indication, eliminate several surveillance requirements, and allow the use of automated operator aids (or automated controls) from main control room. The meeting notice dated May 7, 2024, is available in Agencywide Documents Access and Management System at Accession No. ML24129A010.

The purpose of the meeting was to discuss the requests to withhold information provided in the license amendment request, as supplemented. Specifically, the NRC staff requested additional information on the affidavits submitted that requested to withhold the provided information. The licensee provided additional clarification to support the requests.

Please direct any inquiries to me at 301-415-3733 or Robert.Kuntz@nrc.gov.

Sincerely,

/RA/

Robert Kuntz, Senior Project Manager Plant Licensing Branch III Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-352 and 50-353

Enclosure:

List of Attendees cc: Listserv

Enclosure LIST OF ATTENDEES MAY 22, 2024, MEETING WITH CONSTELLATION ENERGY GENERATION, LLC DIGITAL INSTRUMENT AND CONTROL RELATED AMENDMENT LIMERICK GENERATING STATION, UNITS 1 AND 2 Nuclear Regulatory Commission Robert Kuntz Constellation Energy Generation, LLC Frank Mascitelli Dave Molteni Mark Samselski Constellation Energy Generation, LLC Contractor Matt Shakun Warren Odess-Gillet Zach Harper Steve Merkiel

ML24151A259 OFFICE NRR/DORL/LPL3/PM NRR/DORL/LPL3/LA NRR/DORL/LPL1/BC NRR/DORL/LPL3/PM NAME RKuntz KZeleznock HGonzález RKuntz DATE 05/30/2024 06/03/2024 06/03/2024 06/03/2024