ML22082A139

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Summary of Public Meeting with Terrapower, LLC to Discuss the Methodology Used in Identifying the Principal Design Criteria
ML22082A139
Person / Time
Site: 99902100
Issue date: 04/18/2022
From: Mallecia Sutton
NRC/NRR/DANU/UARL
To: William Kennedy
NRC/NRR/DANU/UARL
Wagner K; 301-415-6202
References
EPID L-2021-LRM-0071
Download: ML22082A139 (4)


Text

W. Kennedy MEMORANDUM TO:

William B. Kennedy, Acting Chief Advanced Reactor Licensing Branch Division of Advanced Reactors and Non-Power Production and Utilization Facilities Office of Nuclear Reactor Regulation FROM:

Mallecia A. Sutton, Senior Project Manager Advanced Reactor Licensing Branch Division of Advanced Reactors and Non-Power Production and Utilization Facilities Office of Nuclear Reactor Regulation

SUBJECT:

SUMMARY

OF DECEMBER 9, 2021, PUBLIC MEETING WITH TERRAPOWER, LLC TO DISCUSS THE METHODOLOGY USED IN IDENTIFYING THE PRINCIPAL DESIGN CRITERIA (EPID NO. L-2021-LRM-0071)

On December 9, 2021, the U.S. Nuclear Regulatory Commission (NRC) staff held an observation public meeting with TerraPower, LLC (TerraPower) to provide the NRC staff with an overview of the methodology used in identifying the Risk-Informed, Performance-Based (RIPB)

Principal Design Criteria (PDC) for the Natrium Reactor. Participants included personnel from the NRC staff, TerraPower, General Electric Hitachi, Bechtel, PacifiCorp, and members of the public.

The public meeting notice, dated November 22, 2021, can be found in the NRCs Agencywide Documents Access and Management System (ADAMS) at Accession No. ML21327A012. The presentation slides can be found in ADAMS at Accession No. ML21340A107. Enclosure 1 provides the list of meeting attendees.

The NRC staff began the public meeting with an introduction and pertaining logistical information. The NRC staff explained that the meeting was an observation meeting and that TerraPower representatives would provide the NRC staff with an overview of the methodology used in identifying the RIPB PDC for the Natrium Reactor. The NRC staff also explained that a portion of the meeting would be closed to the public. During the public portion of the meeting, TerraPower provided an overview of the Natrium Reactor design, the U.S. Department of Energy Advanced Reactor Demonstration Program, modifications to the Sodium Fast Reactor Design Criteria (SFR-DC), and preliminary Natrium PDC. The modifications to the SFR-DC discussed included the use of the wording safety-significant, the preliminary Natrium PDC relevant to functional containment, and additional PDC considerations. At the end of the presentation, the public had an opportunity to ask questions.

CONTACT: Mallecia Sutton, NRR/DANU 301-415-0673 April 18, 2022 Signed by Sutton, on 04/18/22

W. Kennedy During the closed portion of the meeting, TerraPower representatives and the NRC staff continued to discuss more detailed observations from Natrium PDC development activities and the next steps for future interactions regarding the Natrium Reactor.

Project No. 99902100

Enclosure:

As stated

SUBJECT:

SUMMARY

OF DECEMBER 9, 2021, PRE-APPLICATION PUBLIC MEETING WITH TERRAPOWER, LLC TO DISCUSS THE METHODOLOGY USED IN IDENTIFYING THE PRINCIPAL DESIGN CRITERIA (EPID NO. L-2021-LRM-0071) DATED: APRIL 18, 2022 DISTRIBUTION:

PUBLIC RidsNrrDanu Resource RidsNrrDanuUarl Resource MSutton, NRR WKennedy, NRR DGreene, NRR CSmith, NRR KWagner, NRR ASiwy, NRR IJung, NRR HPhan, NRR EOesterle, NRR JSebrosky, NRR JSchmidt, NRR CVanWert, NRR JSegala, NRR SPark, NRR JAshcraft, NRR AMoreno, OCA ADAMS Accession Number: ML22082A139 NRC-001 OFFICE NRR/DANU/UARL/PM NRR/DANU/UARL/PM NRR/DANU/UARL/LA NAME KWagner MSutton DGreene DATE 4/5/2022 4/11/2022 4/13/2022 OFFICE NRR/DANU/UARL/BC(A)

NRR/DANU/UARL/PM NAME WKennedy MSutton DATE 4/18/2022 4/18/2022 OFFICIAL RECORD COPY

Enclosure List of Attendees Public Meeting with TerraPower, LLC to Discuss the Methodology Used in Identifying the Principal Design Criteria Thursday, December 9, 2021 1:00 p.m. - 4:00 p.m.

Name Organization Mallecia Sutton U.S. Nuclear Regulatory Commission (NRC)

John Segala NRC William Kennedy NRC Chris Van Wert NRC Katherine Wagner NRC Alex Siwy NRC Ian Jung NRC Hanh Phan NRC Eric Oesterle NRC Joe Sebrosky NRC Jeff Schmidt NRC Joseph Ashcraft NRC Sunwoo Park NRC Angel Moreno NRC Ryan Sprengel TerraPower, LLC (TerraPower)

Tara Neider TerraPower Eric Williams TerraPower Mark Werner TerraPower Bryan Eyers TerraPower Ian Gifford TerraPower Aaron Martin TerraPower Benoit Dionne TerraPower Brian Johnson TerraPower James Vollmer TerraPower Chris Robinson General Electric Hitachi (GEH)

Shelby Small GEH Scott Ingalls GEH Lisa Schichlein GEH Derek Bass GEH Lee Meek GEH Chris Robinson GEH George Honma GEH Denise Brooks GEH

2 Steven Kline Bechtel Chuck Tack PacifiCorp Brandon Hartle Public Citizen Charlotte Geiger Public Citizen Ingrid Nordby Public Citizen Jan Facemire Public Citizen Linnea Melbye Public Citizen Raymond Wang Public Citizen Steve Vaughn Public Citizen Esther Wagner Public Citizen Lindy Linn Public Citizen Brandon Chisholm Public Citizen Adam Stein Public Citizen Dillon Sanders Public Citizen