ML24009A194

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Summary of Partially Closed Meeting with Terrapower, LLC, to Discuss Instrumentation and Control Architecture and Design Basis
ML24009A194
Person / Time
Site: 99902100
Issue date: 01/03/2024
From: Brusselmans R
NRC/NRR/DANU/UAL1
To: Jessup W
NRC/NRR/DANU/UAL1
References
EPID L-2021-LRM-0071
Download: ML24009A194 (4)


Text

January 3, 2024 MEMORANDUM TO:

William T. Jessup, Chief Advanced Reactor Licensing Branch 1 Division of Advanced Reactors and Non-Power Production and Utilization Facilities Office of Nuclear Reactor Regulation FROM:

Roel A. Brusselmans, Project Manager Advanced Reactor Licensing Branch 1 Division of Advanced Reactors and Non-Power Production and Utilization Facilities Office of Nuclear Reactor Regulation

SUBJECT:

SUMMARY

OF THE JUNE 15, 2023, PARTIALLY CLOSED PUBLIC MEETING WITH TERRAPOWER, LLC, TO DISCUSS INSTRUMENTATION AND CONTROL ARCHITECTURE AND DESIGN BASIS (EPID NO. L-2021-LRM-0071)

Meeting Information:

Applicant: TerraPower, LLC (TerraPower)

Project No.: 99902100 Public Meeting Notice Agencywide Documents Access and Management System (ADAMS)

Accession No.: ML23142A300 Applicant Presentation Slides: ML23153A208 Meeting Attendees: See the enclosure for a list of meeting attendees.

CONTACT:

Roel A. Brusselmans, NRR/DANU (301) 415-0829

/RA/

W. Jessup 2

Meeting Summary:

On June 15, 2023, the NRC staff held a partially closed public meeting with TerraPower to provide the U.S. Nuclear Regulatory Commission (NRC) staff with an overview of the Instrumentation and Control (I&C) architecture and design basis for the Natrium design. This meeting was held in anticipation of a forthcoming topical report from TerraPower regarding the same subject. Participants included representatives from TerraPower, the Department of Energy, General Electric Hitachi, Duke Energy, and members of the general public. The NRC staff conducted the meeting in accordance with NRC Management Directive 3.5, Attendance at NRC Staff-Sponsored Meetings (ML21180A271).

The NRC staff began the meeting with an introduction and explained that a portion of the meeting would be closed to the public to discuss proprietary information. During the public portion of the meeting, TerraPower provided an overview of the Natrium plant design including I&C systems, Natrium I&C regulatory framework, and a discussion on how defense-in-depth (defense lines) will be used to meet safety requirements. TerraPower explained how the safety related, non-safety related with special treatment, and non-safety related with no special treatment structures, systems, and components classification scheme would be used in this context. TerraPower discussed regulations and guidance related to I&C. Cyber security system requirements were also discussed. At the end of the presentation, the public had an opportunity to ask the NRC staff questions.

During the closed portion of the meeting, TerraPower provided additional details related to the I&C architecture and design basis for the Natrium design. TerraPower representatives and the NRC staff discussed the next steps for future interactions regarding the Natrium reactor design.

No regulatory decisions were made as a result of this meeting.

Enclosure:

List of Meeting Attendees cc: TerraPower Natrium via GovDelivery

W. Jessup 3

SUBJECT:

SUMMARY

OF THE JUNE 15, 2023, PARTIALLY CLOSED PUBLIC MEETING WITH TERRAPOWER, LLC, TO DISCUSS INSTRUMENTATION AND CONTROL ARCHITECTURE AND DESIGN BASIS (EPID NO. L-2021-LRM-0071) DATED: JANUARY 3, 2024.

DISTRIBUTION:

PUBLIC RidsNrrDanuUal1 Resource RidsNrrDanu Resource MSutton, NRR SDevlin-Gill, NRR CBanks, NRR RBrusselmans, NRR WJessup, NRR RAnzalone, NRR DGreene, NRR JAshcraft, NRR SWyman, RES ZGran, NRR CdeMessieres, NRR DWarner, NSIR RCostello, NSIR RAnzalone, NRR CCheung, NRR ADAMS Accession Number: [ML24009A194]

NRR-001 OFFICE NRR/DANU/UAL1/PM NRR/DANU/UAL1/PM NRR/DANU/UAL1/LA NRR/DANU/UAL1/BC NAME RBrusselmans MSutton DGreene WJessup DATE 10/20/2023 10/26/2023 11/2/2023 12/22/2023 OFFICE NRR/DANU/UAL1/PM NAME RBrusselmans DATE 1/3/2024 OFFICIAL RECORD COPY

Enclosure List of Meeting Attendees

SUMMARY

OF THE JUNE 15, 2023, PARTIALLY CLOSED PUBLIC MEETING WITH TERRAPOWER, LLC, TO DISCUSS INSTRUMENTATION AND CONTROL ARCHITECTURE AND DESIGN BASIS (EPID NO. L-2021-LRM-0071)

June 15, 2023 Name Organization Mallecia Sutton U.S. Nuclear Regulatory Commission (NRC)

Courtney Banks NRC Roel Brusselmans NRC Joseph Ashcraft NRC Steve Wyman NRC Zachary Gran NRC Candace de Messieres NRC Dan Warner NRC Ralph Costello NRC Reed Anzalone NRC Calvin Cheung NRC Ryan Sprengel TerraPower, LLC (TerraPower)

Brian Johnson TerraPower Chris Hope TerraPower Dan Althouse TerraPower Jamie Getchius TerraPower Mark Burzynski TerraPower Mike Montecalvo TerraPower Mike Dunevant TerraPower Richard Beck TerraPower Ryan Miller TerraPower Jerry Mills TerraPower Bob Hirmanpour TerraPower Cyrus Afshar TerraPower Erin Wisler TerraPower Sean Kelley General Electric (GE) Hitachi Tim Enfinger GE Hitachi Allen Fisher GE Hitachi Jon Turner GE Hitachi Lee Grzeck Duke Energy Mark Natale Department of Energy (DOE)

Timothy Stuhldreher DOE