ML20044F188

Summary, January 29, 2020, Closed Mtg W/ Exelon Generation Company, LLC Draft RAI No. 3, the Quad Cities Nuclear Power Station, Units 1 & 2 Amendment Request to Increase Main Steam Isolation Valve Leakage

ML20044F188
Person / Time
Site:	Quad Cities
Issue date:	02/20/2020
From:	Kimberly Green Plant Licensing Branch III
To:	Bryan Hanson Exelon Generation Co
Green, K
References
EPID L-2019-LLA-0045
Download: ML20044F188 (4)

Text

February 20, 2020 LICENSEE:

Exelon Generation Company, LLC FACILITY:

Quad Cities Nuclear Power Station, Units 1 and 2

SUMMARY

OF JANUARY 29, 2020, CLOSED MEETING WITH EXELON GENERATION COMPANY, LLC REGARDING DRAFT REQUEST FOR ADDITIONAL INFORMATION NO. ARCB-RAI-3 FOR THE QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 AMENDMENT REQUEST TO INCREASE MAIN STEAM ISOLATION VALVE LEAKAGE (EPID L-2019-LLA-0045)

On January 29, 2020, a closed meeting was held between the U.S. Nuclear Regulatory Commission (NRC) staff and representatives of Exelon Generation Company, LLC (Exelon).

The purpose of the meeting was to discuss Exelons planned approach for responding to draft request for additional information (RAI) No. ARCB-RAI-3 for the Quad Cities Nuclear Power Station, Units 1 and 2, license amendment request (LAR) to increase allowable main steam isolation valve leakage. The meeting notice and agenda, dated January 17, 2020, are available in Agencywide Documents Access and Management System (ADAMS) at Accession No. ML20017A323. A list of participants is provided as an enclosure to this summary.

ARCB-RAI-3 requests information on the licensees aerosol settling velocity and model and its accounting for the credit of drywell sprays (ADAMS Accession No. ML20031C833). Exelon staff provided information on its proposed method and quantification of conservatism in the model, with illustrative case studies to support its forthcoming RAI response. The Information presented was proprietary in nature, which included some novel approaches to assess conservatisms with various inputs. The NRC staff asked a number of clarifying questions.

Because of the nature of Exelons planned approach, it stated that it might request additional time to respond to the formal RAI.

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 No regulatory decisions were made at this meeting.

Please direct any inquiries to me at 301-415-2934, or Booma.Venkataraman@nrc.gov.

/RA/

Kimberly J. Green, Sr. Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-254 and 50-265

Enclosure:

List of Participants cc w/enclosure: Listserv

ML20044F188

• via e-mail OFFICE NRR/DORL/LPL2-2/PM NRR/DORL/LPL2-2/LA NRR/DORL/LPL3/BC NRR/DORL/LPL2-2/PM NAME KGreen BAbeywickrama NSalgado KGreen DATE 2/ /2020 2/18/2020 2/20/2020 2/20/2020

Enclosure LIST OF PARTICIPANTS JANUARY 29, 2020, CLOSED MEETING EXELON GENERATION COMPANY, LLC REGARDING DRAFT REQUEST FOR ADDITIONAL INFORMATION NO. ARCB-RAI-3 QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 Name Organization Kim Green U.S. Nuclear Regulatory Commission (NRC)

Booma Venkataraman NRC Nancy Salgado NRC Russ Haskell NRC Gregory Suber NRC Rich Clement NRC Mark Blumberg NRC Kevin Hsueh NRC John Parillo NRC Greg Bowman NRC Sam Lee NRC Jim Danna NRC Audrey Klett NRC Sean Meighan NRC Jerry Dozier NRC Rob Murray NRC Dan Tesar NRC Michael Marshall NRC John Massari Exelon Generation Company, LLC (Exelon)

Shane Gardner Exelon Rebecca Steinman Exelon Patrick Simpson Exelon Baris Sarikaya Exelon Jason Hawman Exelon Rick Swart Exelon Emily Yokopenic Exelon Tom Loomis Exelon Ronnie Reynolds Exelon