ML26030A250
| ML26030A250 | |
| Person / Time | |
|---|---|
| Site: | 99902076 |
| Issue date: | 02/04/2026 |
| From: | Kevin Roche NRC/NRR/DANU/UAL2 |
| To: | Alissa Neuhausen NRC/NRR/DANU/UAL2 |
| References | |
| EPID L-2025-TOP-0041 | |
| Download: ML26030A250 (0) | |
Text
MEMORANDUM TO:
Alissa Neuhausen, Chief Advanced Reactor Licensing Branch 2 Division of Advanced Reactors and Non-power Production and Utilization Facilities Office of Nuclear Reactor Regulation FROM:
Kevin Roche, Project Manager Advanced Reactor Licensing Branch 2 Division of Advanced Reactors and Non-power Production and Utilization Facilities Office of Nuclear Reactor Regulation
SUBJECT:
SUMMARY
OF THE JANUARY 22, 2026, PUBLIC MEETING WITH TERRESTRIAL ENERGY USA, INC., DISCUSSION ON THE STRATEGY FOR ESTABLISHING DEFENSE IN DEPTH FOR IMSR STRUCTURES, SYSTEMS AND COMPONENTS TOPICAL REPORT (EPID NO. L-2025-TOP-0041)
Meeting Information:
Applicant: Terrestrial Energy USA, Inc (TEUSA)
Docket/Project No.(s): 99902076 Public Meeting Notice Agencywide Documents Access and Management System (ADAMS)
Accession No.: ML26020A286 Agenda Items: ML26020A280 Meeting Attendees: See the enclosure for a list of meeting attendees.
CONTACT:
Michelle Vega Rodriguez, NRR/DANU 301-415-1170 February 4, 2026 Signed by Roche, Kevin on 02/04/26
ANeuhausen Meeting Summary:
On January 22, 2026, the U.S. Nuclear Regulatory Commission (NRC) staff conducted a public meeting in accordance with NRC Management Directive 3.5, Attendance at NRC Staff-Sponsored Meetings (ADAMS Accession No. ML21180A271) with TEUSA to discuss areas relevant to the topical report (TR) Strategy for Establishing Defense in Depth for IMSR Structures, Systems and Components, Revision A (ML25322A302). The objective of the meeting was to provide high-level feedback to support TEUSA in determining potential next steps associated with this TR.
During the meeting, the NRC staff and TEUSA discussed feedback (ML26020A280) that the staff made public in advance of the meeting. TEUSA asked questions and the staff provided examples to clarify specific feedback items. Additionally, the staff discussed factors for TEUSA to consider in evaluating whether a white paper may provide advantages over a TR based on the feedback provided.
Next Steps:
TEUSA will evaluate the NRC staffs feedback internally and determine the approach it intends to take for the TR and will communicate its decision to the NRC staff.
No regulatory decisions were made during or as a result of this meeting.
Project [or Docket] No. 99902076
Enclosure:
List of Meeting Attendees cc: Terrestrial IMSR via GovDelivery dokeefe@terrestrialenergy.com
ANeuhausen
SUBJECT:
SUMMARY
OF THE JANUARY 22, 2026, PUBLIC MEETING WITH TERRESTRIAL ENERGY USA, INC., DISCUSSION ON THE STRATEGY FOR ESTABLISHING DEFENSE IN DEPTH FOR IMSR STRUCTURES, SYSTEMS AND COMPONENTS TOPICAL REPORT (EPID NO. L-2025-TOP-0041).
DATED: FEBRUARY 4, 2026 DISTRIBUTION:
PUBLIC RidsNrrDanuUal1 Resource RidsNrrDanuUal2 Resource RidsNrrDanu Resource ANeuhausen MVegaRodriguez KRoche HPhan GOberson ADAMS Accession Number: ML26030A250 NRR-106 OFFICE NRR/DANU/UAL2/PM NRR/DANU/UAL2/PM NRR/DANU/UAL2/BC NAME MVegaRodriguez KRoche ANeuhausen DATE 01/30/2026 02/04/2026 02/04/2026 OFFICE NRR/DANU/UAL2/PM NAME KRoche DATE 02/04/2026 OFFICIAL RECORD COPY
Enclosure List of Meeting Attendees For the January 22, 2026, Public Meeting with Terrestrial Energy USA, INC., Discussion on the Strategy for Establishing Defense in Depth for IMSR Structures, Systems and Components" Topical Report January 22, 2026 Name Organization Michelle E. Vega Rodriguez U.S. Nuclear Regulatory Commission (NRC)
Kevin Roche NRC Alissa Neuhausen NRC Greg Oberson NRC Hanh Phan NRC Benjamin Ratichek NRC David O'Keefe Terrestrial Energy USA, Inc. (TEUSA)
Darren Love TEUSA Francis Akstulewicz TEUSA Robert Ion TEUSA William Smith TEUSA Ziping Li TEUSA Rob Burg Engineering Planning and Management (EPM)
PJ Seel Breakthrough Institute (BTI)
Kris Cumming NuScale Matthew Bracco X-Energy