ML25318A243
| ML25318A243 | |
| Person / Time | |
|---|---|
| Issue date: | 11/13/2025 |
| From: | Kevin Roche Office of Nuclear Reactor Regulation |
| To: | Alissa Neuhausen Office of Nuclear Reactor Regulation |
| References | |
| Download: ML25318A243 (6) | |
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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 /RA/
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 SEPTEMBER 3, 2025, PARTIALLY CLOSED MEETING WITH RADIANT INDUSTRIES RELATED TO ENVIRONMENTAL REVIEW AND MANUFACTURING FACILITY SITE DISCUSSION Meeting Information:
On September 3, 2025, the U.S. Nuclear Regulatory Commission (NRC) staff held a public meeting with Radiant staff to discuss their future regulatory engagement.
This was a partially closed observation meeting. Radiant presented an overview of the company and reactor design. Slides are available in ADAMS Accession No. ML25245A114.
Meeting Attendees: See the enclosure for a list of meeting attendees.
CONTACT: Kevin Roche, NRR/DANU (301) 415-1554 November 13, 2025
A. Neuhausen 2
Meeting Summary:
Public Session The NRC staff began the meeting with introductions and explained that a portion of the meeting would be closed to the public to discuss proprietary information.
Radiant presented slides (publicly available)
The initial discussion was an overview of Radiant and a discussion of the Kaleidos reactor.
o Radiant has approximately 100 employees, and a 38,000 sq ft facility in El Segundo, California. They plan to announce the location of their 350,000 sq.
ft. Kaleidos Reactor Factory in the fall of 2025 o Kaleidos is a 1MW electric (1.9 MW thermal) reactor with the nuclear and electricity generation components contained in one container.
o Radiant was competitively selected by DOE as the 1st nuclear reactor design to be tested in the demonstration of microreactor experiments.
Radiant discussed their site selection process. Initially, Radiant evaluated sites in 10 states and has since narrowed the potential sites to four states.
Closed Session Discussion of topics that involve propriety information.
No regulatory decisions were made as a result of this meeting.
Enclosure:
List of Meeting Attendees Distribution List (GovDelivery):
Radiant
S. Phipott 3
SUBJECT:
SUMMARY
OF THE SEPTEMBER 3, 2025, PARTIALLY CLOSED MEETING WITH RADIANT INDUSTRIES RELATED TO ENVIRONMENTAL REVIEW AND MANUFACTURING FACILITY SITE DISCUSSION DATED OCTOBER X, 2025 DISTRIBUTION:
Public KRoche, NRR ANeuhausen, NRR RidsNrrDanu Resource RidsNrrDanuUAL2 Resource RidsOpaMailCenter Resource ADAMS Accession Number: MLXXXXXXXXX NRC-001 OFFICE NRR/DANU/UAL2:PM NRR/DANU/UAL2:BC(A) NRR/DANU/UAL2:PM NAME KRoche ANeuhausen KRoche DATE 9/29/2025 9/30/2025 11/13/2025 OFFICIAL RECORD COPY
LIST OF ATTENDEES
SUMMARY
OF THE SEPTEMBER 3, 2025, PARTIALLY CLOSED MEETING WITH RADIANT INDUSTRIES - DISCUSSION RELATED TO FUTURE REGULATORY ENGAGEMENT DATED MAY X, 2025 September 3, 2025 Open Meeting Attendance Name Organization Alissa Neuhausen U.S. Nuclear Regulatory Commission (NRC)
Daniel Barnhurst NRC Donald Palmrose NRC Greg Oberson NRC Jared Nadel NRC Kevin Roche NRC Michael Benson NRC Santosh Bhatt NRC Stephen Philpott NRC Chanson Yang Radiant Dominik Muszynski Public Kris Cummings Public Lisa Matis Public Melinda Graham Radiant Phoebe Lind Radiant Thomas Braudt Public 1
Enclosure
Closed Meeting Attendance Name Organization Alissa Neuhausen NRC Daniel Barnhurst NRC Donald Palmrose NRC Greg Oberson NRC Kevin Roche NRC Santosh Bhatt NRC Stephen Philpott NRC Chanson Yang Radiant Melinda Graham Radiant Phoebe Lind Radiant 2