Letter Sequence Meeting |
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Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance...
Administration
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, ... further results|Meeting]]
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MONTHYEARPMNS20211430, Pre-application Meeting with Terrapower to Discuss the Natrium Energy Island Decoupling2021-11-15015 November 2021
Pre-application Meeting with Terrapower to Discuss the Natrium Energy Island Decoupling
Project stage: Meeting
PMNS20211499, Pre-application Meeting with Terrapower to Discuss the the Methodology Used in Identifying the Risk-Informed, Performance-Based (RIPB) Principal Design Criteria (PDC)2021-11-23023 November 2021
Pre-application Meeting with Terrapower to Discuss the the Methodology Used in Identifying the Risk-Informed, Performance-Based (RIPB) Principal Design Criteria (PDC)
Project stage: Meeting
PMNS20211473, Pre-application Meeting with Terrapower to Discuss the Environmental Methodology for the Natrium Design2021-11-30030 November 2021
Pre-application Meeting with Terrapower to Discuss the Environmental Methodology for the Natrium Design
Project stage: Meeting
ML21340A1072021-12-0606 December 2021
Public Meeting Terrapower Natrium PDC Presentation
Project stage: Request
ML21314A1422022-01-10010 January 2022
Terrapower, LLC - Summary of September 28, 2021, Pre-application Public Meeting to Discuss the Site Selection Process for the Natrium Plant
Project stage: Meeting
ML22011A0722022-01-11011 January 2022
Terrapower Pre-Application Radiological Source Term Methodology Development Presentation
Project stage: Other
PMNS20211570, Pre-application Meeting with Terrapower to Discuss the Source Term Methodology Plans for the Natrium Design2022-01-12012 January 2022
Pre-application Meeting with Terrapower to Discuss the Source Term Methodology Plans for the Natrium Design
Project stage: Meeting
ML21362A6522022-02-14014 February 2022
Summary of November 17, 2021, Pre-application Public Meeting with Terrapower, LLC to Discuss the Natrium Reactor Energy Island Decoupling
Project stage: Meeting
ML21363A1762022-02-18018 February 2022
Summary of Pre-Application Public Meeting with Terrapower, LLC to Discuss the Digital Instrumentation and Control System for the Natrium Reactor
Project stage: Meeting
PMNS20220144, Pre-application Meeting with Terrapower to Discuss the Human Factors Engineering on Natrium Plant Design2022-02-18018 February 2022
Pre-application Meeting with Terrapower to Discuss the Human Factors Engineering on Natrium Plant Design
Project stage: Meeting
ML22074A2212022-03-11011 March 2022
Terrapower, LLC, Human Factors Engineering Program Presentation Material
Project stage: Request
ML22080A2562022-03-21021 March 2022
Terrapower Submittal of Functional Containment Presentation Material
Project stage: Request
ML21362A7632022-03-23023 March 2022
Summary of December 1, 2021, Pre-Application Public Meeting with Terrapower, LLC to Discuss the Environmental Methodology for the Natrium Reactor
Project stage: Meeting
PMNS20220148, Pre-application Meeting with Terrapower to Discuss the Natrium Plant Design Functional Containment2022-03-23023 March 2022
Pre-application Meeting with Terrapower to Discuss the Natrium Plant Design Functional Containment
Project stage: Meeting
ML22082A2222022-03-23023 March 2022
Terrapower Slide Presentation for Met Tower Water Supply Public Meeting
Project stage: Request
PMNS20220150, Pre-application Meeting with Terrapower to Discuss the Meteorological Data and Plant Water Source for the Natrium Plant Design2022-03-28028 March 2022
Pre-application Meeting with Terrapower to Discuss the Meteorological Data and Plant Water Source for the Natrium Plant Design
Project stage: Meeting
ML21348A7402022-03-30030 March 2022
Summary of Public Meeting to Discuss the Structures, Systems and Components Classification for the Natrium Reactor
Project stage: Meeting
PMNS20220357, Pre-application Meeting with Terrapower to Discuss the Human Factors Engineering on Natrium Plant Design2022-04-0505 April 2022
Pre-application Meeting with Terrapower to Discuss the Human Factors Engineering on Natrium Plant Design
Project stage: Meeting
ML22073A2762022-04-11011 April 2022
Summary of November 29, 2021, Closed Pre-Application Meeting with Terrapower, LLC to Discuss the Fuel Qualification Methodology for the Natrium Reactor
Project stage: Meeting
ML22082A2342022-04-11011 April 2022
Summary of January 13, 2022, Pre-Application Public Meeting with Terrapower, LLC to Discuss the Source Term Methodology Plans for the Natrium Reactor
Project stage: Meeting
ML22082A1392022-04-18018 April 2022
Summary of Public Meeting with Terrapower, LLC to Discuss the Methodology Used in Identifying the Principal Design Criteria
Project stage: Meeting
PMNS20220416, Pre-application Meeting with Terrapower to Discuss the Fuel Cycle Impacts on Natrium Plant Design2022-04-18018 April 2022
Pre-application Meeting with Terrapower to Discuss the Fuel Cycle Impacts on Natrium Plant Design
Project stage: Meeting
ML22112A1412022-04-21021 April 2022
Terrapower, LLC, Fuel Cycle: Environmental Impacts Meeting Material
Project stage: Request
PMNS20220482, Pre-Application Meeting with NRC and Terrapower to Discuss the Testing Plan and Methodology That Will Be Used for the Natrium Design2022-05-0909 May 2022
Pre-Application Meeting with NRC and Terrapower to Discuss the Testing Plan and Methodology That Will Be Used for the Natrium Design
Project stage: Meeting
ML22132A1522022-05-11011 May 2022
Terrapower Testing Program and Methodology Presentation Material
Project stage: Request
PMNS20220519, Pre-application Meeting with Terrapower to Discuss the Natrium Plant Overview2022-05-17017 May 2022
Pre-application Meeting with Terrapower to Discuss the Natrium Plant Overview
Project stage: Meeting
ML22144A4152022-06-13013 June 2022
Summary of March 15, 2022, and April 7, 2022, Closed Meetings with Terrapower, LLC to Discuss the Human Factors Engineering for Natrium Reactor
Project stage: Meeting
ML22189A2092022-07-20020 July 2022
March 30, 2022, Summary of Public Meeting with Terrapower, LLC to Discuss the Meteorological Data and Plant Water Source for the Natrium Reactor
Project stage: Meeting
ML22180A2692022-07-21021 July 2022
March 24, 2022, Summary of Pre-Application Public Meeting Between Terrapower, LLC and NRC Staff to Discuss the Natrium Reactor Functional Containment
Project stage: Meeting
ML22187A1062022-08-11011 August 2022
Summary of May 4, 2022, Closed Meeting with Terrapower, LLC to Discuss the Fuel Cycle Environmental Impacts for the Natrium Reactor
Project stage: Meeting
PMNS20220920, Pre-application Meeting with Terrapower to Discuss In-Vessel Instrumentation for the Natrium Reactor2022-09-0101 September 2022
Pre-application Meeting with Terrapower to Discuss In-Vessel Instrumentation for the Natrium Reactor
Project stage: Meeting
ML22263A0372022-09-19019 September 2022
Terrapower In-Vessel Instrumentation Presentation Material
Project stage: Request
PMNS20220921, Pre-application Meeting with Terrapower to Discuss the Consensus Codes and Standards on Natrium Plant Design2022-09-27027 September 2022
Pre-application Meeting with Terrapower to Discuss the Consensus Codes and Standards on Natrium Plant Design
Project stage: Meeting
ML22244A2432022-09-29029 September 2022
Summary of the May 23-25, 2022, Closed Pre-Application Public Meeting Between Terrapower, LLC and NRC Staff to Discuss an Overview of the Natrium Reactor
Project stage: Meeting
PMNS20220992, Pre-application Meeting with Terrapower to Discuss Metal Fuel Operating Experience on Natrium Plant Design2022-10-11011 October 2022
Pre-application Meeting with Terrapower to Discuss Metal Fuel Operating Experience on Natrium Plant Design
Project stage: Meeting
ML22262A3512022-10-13013 October 2022
Summary of Pre-Application Public Meeting with Terrapower, LLC to Discuss the Testing Plan and Methodology for the Natrium Reactor
Project stage: Meeting
ML22291A0012022-10-17017 October 2022
Terrapower, LLC, Emergency Planning Zone Sizing Methodology Presentation Material
Project stage: Request
PMNS20221094, Pre-application Meeting with Terrapower to Discuss Instrumentation and Control (I&C) Systems and Cyber Security for the Natrium Project2022-10-20020 October 2022
Pre-application Meeting with Terrapower to Discuss Instrumentation and Control (I&C) Systems and Cyber Security for the Natrium Project
Project stage: Meeting
ML22300A2642022-10-27027 October 2022
Terrapower I&C Regulatory Framework & Cyber Security Presentation Material
Project stage: Request
PMNS20221049, Pre-Application Meeting with NRC and Terrapower to Discuss Emergency Planning Zone (EPZ) Methodology2022-10-31031 October 2022
Pre-Application Meeting with NRC and Terrapower to Discuss Emergency Planning Zone (EPZ) Methodology
Project stage: Meeting
ML23025A1332023-01-25025 January 2023
PSAR Seismic Analysis and Seismic SSC Classification Approach
Project stage: Request
PMNS20230077, Pre-Application Meeting with Terrapower to Discuss the Partial Flow Blockage for the Natrium Design2023-01-30030 January 2023
Pre-Application Meeting with Terrapower to Discuss the Partial Flow Blockage for the Natrium Design
Project stage: Meeting
ML23040A1642023-02-0808 February 2023
Terrapower, LLC, Partial Flow Blockage Methodology Presentation Material
Project stage: Request
ML23031A0122023-02-14014 February 2023
Terrapower Summary of the September 29, 2022, Open Observation Pre-Application Meeting with Terrapower, LLC, to Discuss the Consensus Codes and Standards on the Natrium Plant Design
Project stage: Meeting
PMNS20230152, Pre-Application Meeting with NRC and Terrapower to Discuss the Fuel and Control Rod Performance Analysis and Fuel Qualification Plans on the Natrium Design2023-02-22022 February 2023
Pre-Application Meeting with NRC and Terrapower to Discuss the Fuel and Control Rod Performance Analysis and Fuel Qualification Plans on the Natrium Design
Project stage: Meeting
ML23066A3312023-03-0707 March 2023
Terrapower, LLC, Fuel and Control Assembly Qualification Presentation Material
Project stage: Request
PMNS20230154, Pre-Application Meeting with NRC and Terrapower to Discuss the Instrumentation and Controls (I&C) Defense-in-Depth and Diversity on the Natrium Design2023-04-11011 April 2023
Pre-Application Meeting with NRC and Terrapower to Discuss the Instrumentation and Controls (I&C) Defense-in-Depth and Diversity on the Natrium Design
Project stage: Meeting
ML23031A1162023-04-11011 April 2023
September 26, 2022, Summary of the Closed Meeting with Terrapower, LLC, Pre-Application Meeting with Terrapower to Discuss In-Vessel Instrumentation for the Natrium Reactor
Project stage: Meeting
2022-04-11
[Table View] |
Text
February 28, 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 /RA/
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 JULY 11, 2023, PARTIALLY CLOSED MEETING WITH TERRAPOWER, LLC, TO DISCUSS THE SPECIFIED ACCEPTABLE SYSTEM RADIONUCLIDE RELEASE DESIGN LIMITS, FUNCTIONAL CONTAINMENT, AND HYPOTHETICAL ACCIDENTS FOR THE NATRIUM DESIGN (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.: ML23192A450 Applicant Presentation Slides: ML23180A301 Meeting Attendees: See the enclosure for a list of meeting attendees.
CONTACT:
Roel A. Brusselmans, NRR/DANU (301) 415-0673
W. Jessup 2
Meeting Summary:
On July 11, 2023, the U.S. Nuclear Regulatory Commission (NRC) staff held a partially closed public meeting with TerraPower to provide the NRC staff with an overview of the Natrium designs proposed Specified Acceptable System Radionuclide Release Design Limits (SARRDLs), functional containment, and hypothetical accidents that would need to be considered under Title 10 of the Code of Federal Regulations (10 CFR) Section 50.34, Contents of applications; technical information. Participants included representatives from TerraPower, General Electric Hitachi, Bechtel, 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 gave an overview of the Natrium design including a discussion of project goals, plant overview, and graphics explaining the design. TerraPower personnel provided a general overview of SARRDLs, regulations surrounding SARRDLs, and how SARRDLs were applied in the Natrium design. The TerraPower team then explained the concept of a functional containment, how it is applied in the Natrium design, what performance criteria are associated with Natrium functional containment, and how the preliminary safety analysis report will address the functional containment approach. Finally, TerraPower staff outlined its proposed approach for analyzing hypothetical accidents to demonstrate that offsite doses are within the limits of 10 CFR 50.34.
The NRC staff asked about the source of tritium that is to be accounted for in the SARRDLs, as discussed on Slide 10. TerraPower responded that tritium is a result of ternary fission and the activation of boron used as a neutron absorber in control and shield assemblies.
Regarding the major accident examples provided on Slide 21 of the presentation, the NRC staff asked what initiator was considered for the reactivity insertion event and whether external events were considered as initiators. TerraPower replied that the event under consideration was an even core-wide increase in reactivity (such as would occur from an uncontrolled rod withdrawal). TerraPower noted that it was only considering internal events for the containment demonstration and, though external events could potentially result in a more significant reactivity insertion, these were still under development at the time of the meeting.
During the closed portion of the meeting, TerraPower provided additional details regarding SARRDLs, functional containment, and how it intends to meet the requirements under 10 CFR 50.34 for the Natrium design. The NRC staff asked questions about the functional containment boundary and assumptions regarding holdup, retention, and leakage of radionuclides in the functional containment analysis. 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 JULY 11, 2023, PARTIALLY CLOSED MEETING WITH TERRAPOWER, LLC, TO DISCUSS THE SPECIFIED ACCEPTABLE SYSTEM RADIONUCLIDE RELEASE DESIGN LIMITS, FUNCTIONAL CONTAINMENT, AND HYPOTHETICAL ACCIDENTS FOR THE NATRIUM DESIGN (EPID NO. L-2021-LRM-0071)
DATED: FEBRUARY 28, 2024 DISTRIBUTION:
PUBLIC RidsNrrDanuUal1 Resource RidsNrrDanu Resource MSutton, NRR DAtkinson, NRR SDevlin-Gill, NRR RBrusselmans, NRR WJessup, NRR RAnzalone, NRR ASiwy, NRR CdeMessieres, NRR MHart, NRR JSchaperow, NRR SJones, NRR ADAMS Accession Number: [ML24059A159]
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 2/28/2024 OFFICIAL RECORD COPY
Enclosure List of Meeting Attendees
SUMMARY
OF THE JULY 11, 2023, PARTIALLY CLOSED MEETING WITH TERRAPOWER, LLC, TO DISCUSS THE SPECIFIED ACCEPTABLE SYSTEM RADIONUCLIDE RELEASE DESIGN LIMITS, FUNCTIONAL CONTAINMENT, AND HYPOTHETICAL ACCIDENTS FOR THE NATRIUM DESIGN (EPID NO. L-2021-LRM-0071)
July 11, 2023 Name Organization Mallecia Sutton U.S. Nuclear Regulatory Commission (NRC)
Roel Brusselmans NRC Andrew Proffitt NRC Stephanie Devlin-Gill NRC Alex Siwy NRC Candace de Messieres NRC Michelle Hart NRC Jason Schaperow NRC Steve Jones NRC Reed Anzalone NRC George Wilson TerraPower, LLC (TerraPower)
Ryan Sprengel TerraPower Ian Gifford TerraPower Matthew Presson TerraPower Brian Johnson TerraPower Chris Forrest TerraPower Emily Young TerraPower Hugh Luo TerraPower Jong Chang TerraPower Nick Kellenberger TerraPower Joe LaPrad TerraPower Joe Thomas TerraPower Mike Montecalvo TerraPower Steve Kline Bechtel Tim Enfinger General Electric Hitachi