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Alert

Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

University of Illinois at Urbana-Champaign

artist rendering of Cutaway artist’s rendering of the proposed UIUC test reactor


Project Overview

In May 2021, the University of Illinois Urbana-Champaign (UIUC) submitted to the NRC a Letter of Intent to submit an application for a construction permit for a high-temperature gas-cooled reactor.  The proposed research reactor would be based on NANO Nuclear Energy Inc. technology, and would utilize TRISO particle fuel, helium gas coolant, and graphite moderator.  The reactor would be located on UIUC’s campus in Urbana-Champaign, Illinois, and would have a molten salt secondary loop providing electrical power conversion capability for campus use.  UIUC is engaged in pre-application activities with the NRC.

For more information, please see the UIUC High-Temperature Gas-Cooled Reactor pre-application documents (NRC Project No. 99902094).

To subscribe to the University of Illinois at Urbana-Champaign High-Temperature Gas-Cooled Reactor (HTGR) email service, select University of Illinois HTGR from the Advanced Reactors list after entering your email into the GovDelivery system.

Pre-Application Activities

Product

Type

Reference

Status

Regulatory Engagement Plan

Regulatory Engagement Plan

ML25174A166

No review requested

Utilizing a Class 104(c) Licensing Pathway for the Proposed UIUC Research and Test Reactor

White Paper

ML22165A304

Feedback Provided
ML22235A764

Proposed Contents of PSAR Using NUREG-1537 Guidance for the Micro Modular Reactor (MMR®)

White Paper

ML22220A252

Feedback Provided
ML22321A314

Quality Assurance Program Description

Topical Report

ML22320A086

Safety Evaluation Issued
ML23167C137

Applicability of Nuclear Regulatory Commission Regulations

Topical Report

ML22343A282
(Release 1)
ML23242A329
(Release 2)
ML24060A265
(Release 3)
ML24075A304
(Release 4)

Safety Evaluation Issued:
ML24208A143

Safeguards Information-Modified Handling Protection Plan

Plan

ML23053A098
(Release 1)
ML23208A313
(Release 2)
ML24016A198
(Release 3)

Feedback Provided
ML24040A193

Fuel Qualification Methodology

Topical Report

ML23038A240
ML23208A308
(Withdraw letter)
ML23229A238
(Review Terminated)
 
Resubmitted
ML24071A237
(Release 1)
ML24347A211
(Release 2)


Safety Evaluation Issued
ML25101A107

Event Sequence Identification and SSC Safety Classification Methodology 

Topical Report

ML23250A318
(Release 1)
ML24053A336
(Release 2)

Safety Evaluation Issued
ML24075A193

Micro Modular Reactor (MMR) Principal Design Criteria

Topical Report

ML23319A407

Safety Evaluation Issued:
ML24208A066

Page Last Reviewed/Updated Friday, November 07, 2025

Page Last Reviewed/Updated Friday, November 07, 2025