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MONTHYEARML21070A4122021-03-11011 March 2021
Requesting Revision to License Condition in Appendix C in Renewed Facility Operating License
Project stage: Request
ML21111A0312021-04-20020 April 2021
Application to Modify 50.69 Categorization to Implement an Alternate Defense-in-Depth Categorization Process, an Alternate Pressure Boundary Categorization Process, and an Alternate Seismic Tier 1 Categorization Process
Project stage: Other
ML21125A2152021-05-0505 May 2021
Supplement Application to Implement an Alternate Defense-in-Depth Categorization Process, an Alternate Pressure Boundary Categorization Process, and an Alternate Seismic Tier 1 Categorization Process in Accordance
Project stage: Supplement
ML21140A0842021-05-19019 May 2021
Acceptance of Requested Licensing Action Revision to Appendix C License Conditions in Accordance with the Requirements of 10 CFR 50.69 (E-mail)
Project stage: Acceptance Review
ML21263A2482021-10-0101 October 2021
Audit Plan Supporting LAR Request to Implement Alternate Defense-in-Depth, Pressure Boundary, & Seismic Tier 1 Categorization Process in Accordance with Requirements of 10 CFR 50.69
Project stage: Approval
ML21295A0362021-10-20020 October 2021
NRR E-mail Capture - Supplement to Limerick 50.69 Audit Plan Dated October 1, 2021 (L-2021-LLA-0042)
Project stage: Other
ML22028A1832022-01-24024 January 2022
NRR E-mail Capture - Audit Plan Supplement for LIM 50.69 LAR (L-2021-LLA-0042)
Project stage: Approval
ML22034A0142022-02-0202 February 2022
NRR E-mail Capture - Audit Plan Supplement for LIM 50.69 LAR (L-2021-LLA-0042)
Project stage: Approval
ML22045A4802022-02-14014 February 2022
Supplement - Application to Implement an Alternate Defense-in-Depth Categorization Process, an Alternate Pressure Boundary Categorization Process, and an Alternate Seismic Categorization Process in Accordance with
Project stage: Supplement
ML22103A2542022-04-19019 April 2022
Draft Request for Additional Information
Project stage: Draft RAI
ML22136A0032022-05-13013 May 2022
NRR E-mail Capture - NRC Request for Additional Information - Limerick License Amendment Request (L-2021-LLA-0042)
Project stage: RAI
ML22168A1922022-06-24024 June 2022
Summary of May 3, 2022, Public Observation Meeting with Constellation Energy Generation, LLC Re. Proposed License Amendment Request to Modify 10 CFR 50.69 License Conditions
Project stage: Meeting
PMNS20220671, Public Meeting to Discuss Request for Additional Information for Limerick Generating Station License Amendment Request Regarding 10 CFR 50.69 License Conditions2022-06-24024 June 2022
Public Meeting to Discuss Request for Additional Information for Limerick Generating Station License Amendment Request Regarding 10 CFR 50.69 License Conditions
Project stage: RAI
ML22182A4002022-06-30030 June 2022
Response to RAI, Application to Implement Alternate Defense-in-Depth Categorization Process, Alternate Pressure Boundary Categorization Process & Alternate Seismic Categorization Process
Project stage: Response to RAI
ML22227A1112022-08-25025 August 2022
Summary of June 24, 2022, Public Observation Meeting with Constellation Energy Generation, LLC Proposed License Amendment Request to Modify 10 CFR 50.69 License Conditions
Project stage: Meeting
PMNS20230131, Public Meeting to Discuss Status of NRC Review of Limerick Generating Station License Amendment Request Regarding 10 CFR 50.69 License Conditions2023-02-22022 February 2023
Public Meeting to Discuss Status of NRC Review of Limerick Generating Station License Amendment Request Regarding 10 CFR 50.69 License Conditions
Project stage: Meeting
ML23053A1562023-02-23023 February 2023
NRC Presentation Slides for Public Meeting on February 23, 2023 - 10 CFR 50.69 Alternate Processes License Amendment Request Preliminary Partial Denial
Project stage: Meeting
ML23076A2832023-02-23023 February 2023, 28 March 2023
Summary of February 23, 2023, Public Observation Meeting with Constellation Energy Generation, LLC Re. Proposed License Amendment Request to Modify 10 CFR 50.69 License Conditions
Project stage: Request
ML23076A2812023-02-23023 February 2023
Licensee Presentation on Pressure Boundary Process
Project stage: Other
ML23076A2822023-02-23023 February 2023
Licensee Presentation on Defense-in-Depth Process
Project stage: Other
ML23079A1882023-03-24024 March 2023
Summary of Regulatory Audit in Support of Alternate Processes for Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors
Project stage: Other
ML23076A2802023-03-28028 March 2023
Summary of February 23, 2023, Public Observation Meeting with Constellation Energy Generation, LLC Re. Proposed License Amendment Request to Modify 10 CFR 50.69 License Conditions
Project stage: Meeting
ML23089A1602023-03-30030 March 2023
NRR E-mail Capture - NRC Notification to the Commonwealth of Pennsylvania Re. Limerick Generating Station, Units 1 and 2 Amendment - Alternative 10 CFR 50.69 Categorization Approaches
Project stage: Other
ML23094A1982023-05-17017 May 2023
Notice of Issuance of Amendment Nos. 261 & 223 and Denial - Federal Register Notice
Project stage: Approval
ML23094A1792023-05-17017 May 2023
Amd Nos. 261 & 223 Alternate Seismic Approach for Risk-Informed Categorization & Treatment of Structures, Systems, Components for NPR & Denial of Proposed Alternative Defense in Depth & Pressure Boundary Component-Partial Denial SE Encl 4
Project stage: Other
ML23089A1242023-05-17017 May 2023
Issuance of Amd Nos. 261 & 223 Alternate Seismic Approach for Risk-Informed Categorization and Treatment of Structures, Systems a Components for NPR and Denial Proposed Alternative Defense in Depth and Pressure Boundary Component
Project stage: Approval
ML23094A1712023-05-17017 May 2023
Amd Nos. 261 & 223 Alternate Seismic Approach for Risk-Informed Categorization & Treatment of Structures, Systems and Components for NPR and Denial Proposed Alternative Defense in Depth and Pressure Boundary Component
Project stage: Other
2022-04-19
[Table View] |
Text
August 25, 2022 Mr. David P. Rhoades Senior Vice President Constellation Energy Generation, LLC President and Chief Nuclear Officer Constellation Nuclear 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
LIMERICK GENERATING STATION, UNITS 1 AND 2 -
SUMMARY
OF JUNE 24, 2022, PUBLIC OBSERVATION MEETING WITH CONSTELLATION ENERGY GENERATION, LLC RE: PROPOSED LICENSE AMENDMENT REQUEST TO MODIFY 10 CFR 50.69 LICENSE CONDITIONS (EPID L-2021-LLA-0042)
Dear Mr. Rhoades:
On June 24, 2022, the U.S. Nuclear Regulatory Commission (NRC) staff held a virtual public meeting with representatives from Constellation Energy Generation, LLC.1 The purpose of the meeting was to discuss Constellations planned response to NRCs request for additional information (RAI) 2 relating to Constellations license amendment request (LAR) 3 for Limerick Generating Station, Units 1 and 2. Constellation requested in its LAR to modify the existing Limerick license conditions for Title 10 of the Code of Federal Regulations, Section 50.69 (10 CFR 50.69), Risk-informed categorization and treatment of structures, systems and components for nuclear power reactors. The amendments would allow Constellation to use alternative defense-in-depth (DID), pressure boundary, and seismic categorization processes for treatment of systems, structures, and components per 10 CFR 50.69. The enclosure to this summary contains a list of attendees.
The licensee discussed its proposed responses to RAIs 9, 10, and 11, and 12 pertaining to its DID categorization process. As part of its response to RAI-9.A, the licensee informed the NRC staff that it is now using PWROG-20015-NP, Revision 3 in lieu of Revision 3B, which was posted earlier to the audit portal. In RAI-9.D, the licensee stated that it is using RG 1.200, Revision 2.
The licensee discussed its intent to withdraw the containment (large early release frequency) portion of the proposed DID categorization process via its response to RAI-12 and to continue using NEI 00-04 4 for its containment approach.
1 The meeting notice and agenda, dated June 22, 2022, are available in Agencywide Documents Access and Management System (ADAMS) under Accession No. ML22175A098.
2 The RAI, dated April 19, 2022, is available in ADAMS under ML22103A254.
3 ML21070A412, dated March 11, 2021 4
NEI 00-04, 10 CFR 50.69 SSC Categorization Guideline, Revision 0, July 2005 (ML052910035)
D. Rhoades 2
Regarding the NRC staffs questions on the role of the integrated decisionmaking panel (IDP) in the overall 10 CFR 50.69 categorization process (e.g., increased number of structures, systems, and components (SSCs) that would be categorized as low safety significant per the proposed alternative DID categorization process, apparent increased reliance on the IDP), the licensee stated that the IDP would require reviews from its engineering organization. In response to the staff concerns on over-reliance of the IDP, the licensee introduced a review by the engineering team as an additional step in the process.
The NRC staff did not make any regulatory decisions or commitments at the meeting. The enclosure to this summary lists members from the public that attended the meeting. The NRC staff did not receive any public meeting feedback forms. Please direct any inquiries to me at 301-415-0489 or by e-mail to Audrey.Klett@nrc.gov.
Sincerely,
/RA/
Audrey L. Klett, Senior Project Manager Plant Licensing Branch I 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
LIST OF ATTENDEES JUNE 24, 2022, VIRTUAL PUBLIC MEETING WITH CONSTELLATION ENERGY GENERATION, LLC LIMERICK GENERATING STATION, UNITS 1 AND 2 U.S. Nuclear Regulatory Commission Constellation Energy Generation, LLC Mihaela Biro, NRR1/DRA2/APLA3 Stephen Flickinger Jeff Circle, NRR/DRA/APLA Roy R. Linthicum Jim Danna, NRR/DORL4/LPL15 Suzanne Loyd Audrey Klett, NRR/DORL/LPL1 Ashley Rickey Ed Miller, NRR/DORL/LPL2-16 Jeffrey Stone Bob Pascarelli, NRR/DRA/APLA V Sreenivas, NRR/DORL/LPL1 Jensen Hughes Shilp Vasavada, NRR/DRA/APLC7 Brian Nolan Steve Short, PNNL8 David Passehl Mark Wilk, PNNL Charles Young Members of the Public Westinghouse Bradley Dolan, Tennessee Valley Authority Richard W. Rolland, III Alfred Hyde, Dominion Contractor Mary Miller, Dominion Contractor Electric Power Research Institute Doug Kull Patrick ORegan 1 Office of Nuclear Reactor Regulation 2 Division of Risk Assessment 3 Probabilistic Risk Assessment Branch A 4 Division of Operating Reactor Licensing 5 Plant Licensing Branch I 6 Plant Licensing Branch II-1 7 Probabilistic Risk Assessment Branch C 8 Pacific Northwest National Laboratory (NRC contractor)
ML22227A111 OFFICE NRR/DORL/LPL1/PM NRR/DORL/LPL1/LA NRR/DRA/APLA/BC NAME AKlett KZelenock RPascarelli DATE 08/15/2022 08/16/2022 08/15/2022 OFFICE NRR/DORL/LPL1/BC DORL/LPL1/PM NAME HGonzalez AKlett DATE 08/22/2022 08/25/2022
