ML24057A040: Difference between revisions

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LICENSEE: Tennessee Valley Authority
LICENSEE: Tennessee Valley Authority


FACILITY:                                                               Browns Ferry Nuclear Plant, Units 1, 2 and 3
FACILITY: Browns Ferry Nuclear Plant, Units 1, 2 and 3


==SUBJECT:==
==SUBJECT:==
==SUMMARY==
==SUMMARY==
OF FEBRUARY 7, 2024, PUBLIC MEETING WITH TENNESSEE VALLEY AUTHORITY TO PRELIMINARILY DISCUSS THE PLANNED APPROACH FOR THE BROWNS FERRY NUCLEAR PLANT HYDROLOGIC ANALYSIS (EPID L-2024-LRM-0013)
OF FEBRUARY 7, 2024, PUBLIC MEETING WITH TENNESSEE VALLEY AUTHORITY TO PRELIMINARILY DISCUSS THE PLANNED APPROACH FOR THE BROWNS FERRY NUCLEAR PLANT HYDROLOGIC ANALYSIS (EPID L-2024-LRM-0013)
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On February 7, 2024, the U.S. Nuclear Regulatory Commission (NRC) staff held a public teleconference with representatives of the Tennessee Valley Authority (TVA, the licensee) regarding a future license amendment request (LAR) for the Browns Ferry Nuclear Plant (Browns Ferry). The meeting notice and agenda for this meeting, dated January 24, 2024, are available at ADAMS Accession No. ML24024A043. The licensees slides and handouts for the meeting are available at ADAMS Accession No. ML24032A275. A list of the meeting attendees is enclosed.
On February 7, 2024, the U.S. Nuclear Regulatory Commission (NRC) staff held a public teleconference with representatives of the Tennessee Valley Authority (TVA, the licensee) regarding a future license amendment request (LAR) for the Browns Ferry Nuclear Plant (Browns Ferry). The meeting notice and agenda for this meeting, dated January 24, 2024, are available at ADAMS Accession No. ML24024A043. The licensees slides and handouts for the meeting are available at ADAMS Accession No. ML24032A275. A list of the meeting attendees is enclosed.


TVA requested the meeting to discuss its planned approach for a future pre-submittal meeting with the NRC to discuss its proposed LAR to revise the Browns Ferry updated final safety analysis report (UFSAR) to reflect changes to the hydrologic analysis (hereafter referred to as the Hydrology LAR). TVA stated that the Browns Ferry Hydrology LAR will be based on the same probable maximum precipitation (PMP) basis document and application methodology, the same hydrologic modeling software, and the same base model, used for the recent Sequoyah and Watts Bar Hydrology LARs. TVA asked for the NRC staffs preference regarding repeating the detailed discussion on gridded rainfall previously provided during the Sequoyah pre-submittal meeting during the next Browns Ferry   pre-submittal meeting. The NRC staff stated that it would not be necessary to repeat this detailed presentation, nor any information regarding United States Army Corps of Engineers (USAGE) Hydrologic Engineering Center River Analysis System (HEC-RAS) model.
TVA requested the meeting to discuss its planned approach for a future pre-submittal meeting with the NRC to discuss its proposed LAR to revise the Browns Ferry updated final safety analysis report (UFSAR) to reflect changes to the hydrologic analysis (hereafter referred to as the Hydrology LAR). TVA stated that the Browns Ferry Hydrology LAR will be based on the same probable maximum precipitation (PMP) basis document and application methodology, the same hydrologic modeling software, and the same base model, used for the recent Sequoyah and Watts Bar Hydrology LARs. TVA asked for the NRC staffs preference regarding repeating the detailed discussion on gridded rainfall previously provided during the Sequoyah pre-submittal meeting during the next Browns Ferry pre-submittal meeting. The NRC staff stated that it would not be necessary to repeat this detailed presentation, nor any information regarding United States Army Corps of Engineers (USAGE) Hydrologic Engineering Center River Analysis System (HEC-RAS) model.


TVA plans to have the pre-submittal meeting later in 2024. TVA stated that it plans to have open and closed portions for the meeting. During the open portion, TVA plans to discuss the Browns Ferry specific hydrologic background and key updates of the Browns Ferry UFSAR. During the closed portion of the meeting, TVA plans to provide a summary of the results and specific differences between the Browns Ferry and Sequoyah/Watts Bar analytical models. However, due to the high degree of equivalency between the PMP determination methods for the three sites, and the possibility that the NRC will use the   same technical reviewers, TVA said that it proposes to eliminate the discussion of Application of Gridded Precipitation that was previously provided in the Sequoyah/Watts Bar pre-submittal presentation during the next Browns Ferry pre-submittal meeting and asked   for the NRC staffs thoughts regarding this elimination. The NRC staff stated that because some NRC staff that are no longer available for review of the planned LAR, additional information might be needed for the new staff or staff that did not previously work on those portions of the Sequoyah Hydrology LAR. TVA stated that
TVA plans to have the pre-submittal meeting later in 2024. TVA stated that it plans to have open and closed portions for the meeting. During the open portion, TVA plans to discuss the Browns Ferry specific hydrologic background and key updates of the Browns Ferry UFSAR. During the closed portion of the meeting, TVA plans to provide a summary of the results and specific differences between the Browns Ferry and Sequoyah/Watts Bar analytical models. However, due to the high degree of equivalency between the PMP determination methods for the three sites, and the possibility that the NRC will use the same technical reviewers, TVA said that it proposes to eliminate the discussion of Application of Gridded Precipitation that was previously provided in the Sequoyah/Watts Bar pre-submittal presentation during the next Browns Ferry pre-submittal meeting and asked for the NRC staffs thoughts regarding this elimination. The NRC staff stated that because some NRC staff that are no longer available for review of the planned LAR, additional information might be needed for the new staff or staff that did not previously work on those portions of the Sequoyah Hydrology LAR. TVA stated that


because of this, it might be beneficial to provide some of the information during its future pre-submittal meeting.
because of this, it might be beneficial to provide some of the information during its future pre-submittal meeting.
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No comments or public meeting feedback forms were received.
No comments or public meeting feedback forms were received.


Please direct any inquiries to me at 301-415-1627 or   Kimberly.Green@nrc.gov.
Please direct any inquiries to me at 301-415-1627 or Kimberly.Green@nrc.gov.


                                            /RA/
/RA/


Kimberly J. Green, Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
Kimberly J. Green, Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
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==Enclosure:==
==Enclosure:==
List of Attendees
List of Attendees


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BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2 AND 3
BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2 AND 3


Name Organization Kim Green                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               U.S. Nuclear Regulatory Commission (NRC)
Name Organization Kim Green U.S. Nuclear Regulatory Commission (NRC)
Perry Buckberg                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           NRC Barbara Hayes                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     NRC Ken See                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   NRC Deanna Zhang                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       NRC
Perry Buckberg NRC Barbara Hayes NRC Ken See NRC Deanna Zhang NRC


Andy Taylor                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Tennessee Valley Authority (TVA)
Andy Taylor Tennessee Valley Authority (TVA)
Dennis Lundy                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         TVA Beau Eckermann                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             TVA Karen Carboni                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             TVA Donald Lewis                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               TVA Steven Carlyle                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           TVA
Dennis Lundy TVA Beau Eckermann TVA Karen Carboni TVA Donald Lewis TVA Steven Carlyle TVA


Jana Bergman                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Curtiss-Wright Scientech
Jana Bergman Curtiss-Wright Scientech


Enclosure
Enclosure


Package: ML24057A041 Meeting Notice: ML24024A043 Meeting Slides: ML24032A275 Meeting Summary: ML24057A040 OFFICE NRR/DORL/LPL2-2/PM NRR/DORL/LPL2-2/LA NRR/DORL/LPL2-2/BC NRR/DORL/LPL2-2/PM NAME KGreen                                       ABaxter                                     DWrona                                     KGreen DATE 02/26/24                               02/27/24 02/27/24 02/27/24}}
Package: ML24057A041 Meeting Notice: ML24024A043 Meeting Slides: ML24032A275 Meeting Summary: ML24057A040 OFFICE NRR/DORL/LPL2-2/PM NRR/DORL/LPL2-2/LA NRR/DORL/LPL2-2/BC NRR/DORL/LPL2-2/PM NAME KGreen ABaxter DWrona KGreen DATE 02/26/24 02/27/24 02/27/24 02/27/24}}

Revision as of 14:01, 5 October 2024

Summary of February 7, 2024, Public Meeting with Tennessee Valley Authority to Preliminarily Discuss the Planned Approach for the Browns Ferry Nuclear Plant Hydrologic Analysis
ML24057A040
Person / Time
Site: Browns Ferry  Tennessee Valley Authority icon.png
Issue date: 02/27/2024
From: Kimberly Green
Plant Licensing Branch II
To:
Tennessee Valley Authority
Green K
Shared Package
ML24057A041 List:
References
EPID L-2024-LRM-0013
Download: ML24057A040 (1)


Text

February 27, 2024

LICENSEE: Tennessee Valley Authority

FACILITY: Browns Ferry Nuclear Plant, Units 1, 2 and 3

SUBJECT:

SUMMARY

OF FEBRUARY 7, 2024, PUBLIC MEETING WITH TENNESSEE VALLEY AUTHORITY TO PRELIMINARILY DISCUSS THE PLANNED APPROACH FOR THE BROWNS FERRY NUCLEAR PLANT HYDROLOGIC ANALYSIS (EPID L-2024-LRM-0013)

On February 7, 2024, the U.S. Nuclear Regulatory Commission (NRC) staff held a public teleconference with representatives of the Tennessee Valley Authority (TVA, the licensee) regarding a future license amendment request (LAR) for the Browns Ferry Nuclear Plant (Browns Ferry). The meeting notice and agenda for this meeting, dated January 24, 2024, are available at ADAMS Accession No. ML24024A043. The licensees slides and handouts for the meeting are available at ADAMS Accession No. ML24032A275. A list of the meeting attendees is enclosed.

TVA requested the meeting to discuss its planned approach for a future pre-submittal meeting with the NRC to discuss its proposed LAR to revise the Browns Ferry updated final safety analysis report (UFSAR) to reflect changes to the hydrologic analysis (hereafter referred to as the Hydrology LAR). TVA stated that the Browns Ferry Hydrology LAR will be based on the same probable maximum precipitation (PMP) basis document and application methodology, the same hydrologic modeling software, and the same base model, used for the recent Sequoyah and Watts Bar Hydrology LARs. TVA asked for the NRC staffs preference regarding repeating the detailed discussion on gridded rainfall previously provided during the Sequoyah pre-submittal meeting during the next Browns Ferry pre-submittal meeting. The NRC staff stated that it would not be necessary to repeat this detailed presentation, nor any information regarding United States Army Corps of Engineers (USAGE) Hydrologic Engineering Center River Analysis System (HEC-RAS) model.

TVA plans to have the pre-submittal meeting later in 2024. TVA stated that it plans to have open and closed portions for the meeting. During the open portion, TVA plans to discuss the Browns Ferry specific hydrologic background and key updates of the Browns Ferry UFSAR. During the closed portion of the meeting, TVA plans to provide a summary of the results and specific differences between the Browns Ferry and Sequoyah/Watts Bar analytical models. However, due to the high degree of equivalency between the PMP determination methods for the three sites, and the possibility that the NRC will use the same technical reviewers, TVA said that it proposes to eliminate the discussion of Application of Gridded Precipitation that was previously provided in the Sequoyah/Watts Bar pre-submittal presentation during the next Browns Ferry pre-submittal meeting and asked for the NRC staffs thoughts regarding this elimination. The NRC staff stated that because some NRC staff that are no longer available for review of the planned LAR, additional information might be needed for the new staff or staff that did not previously work on those portions of the Sequoyah Hydrology LAR. TVA stated that

because of this, it might be beneficial to provide some of the information during its future pre-submittal meeting.

TVA also questioned whether the next pre-submittal meeting should be in-person, via teleconference (e.g., via Microsoft Teams), or a hybrid meeting given the amount of detailed information that would be presented. TVA mentioned that it maintains an office in Knoxville, Tennessee, and offered that location as a potential site for an in-person meeting. The NRC staff stated that it could support any of these meeting formats but would defer to TVAs preference.

No regulatory decisions were made at this meeting.

No comments or public meeting feedback forms were received.

Please direct any inquiries to me at 301-415-1627 or Kimberly.Green@nrc.gov.

/RA/

Kimberly J. Green, Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

Docket Nos. 50-259, 50-260, and 50-296

Enclosure:

List of Attendees

cc: Listserv LIST OF ATTENDEES

FEBRUARY 7, 2024, PUBLIC MEETING WITH TENNESSEE VALLEY AUTHORITY

REGARDING PLANNED APPROACH FOR THE HYDROLOGIC ANALYSIS

BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2 AND 3

Name Organization Kim Green U.S. Nuclear Regulatory Commission (NRC)

Perry Buckberg NRC Barbara Hayes NRC Ken See NRC Deanna Zhang NRC

Andy Taylor Tennessee Valley Authority (TVA)

Dennis Lundy TVA Beau Eckermann TVA Karen Carboni TVA Donald Lewis TVA Steven Carlyle TVA

Jana Bergman Curtiss-Wright Scientech

Enclosure

Package: ML24057A041 Meeting Notice: ML24024A043 Meeting Slides: ML24032A275 Meeting Summary: ML24057A040 OFFICE NRR/DORL/LPL2-2/PM NRR/DORL/LPL2-2/LA NRR/DORL/LPL2-2/BC NRR/DORL/LPL2-2/PM NAME KGreen ABaxter DWrona KGreen DATE 02/26/24 02/27/24 02/27/24 02/27/24