University of Illinois KRONOS MMR research reactor construction permit: NRC construction permit review for University of Illinois Urbana-Champaign — under review. Sourced dates and schedule.
Background: NRC reactor licensing process, explained · The ADVANCE Act, explained: what changed and where the NRC stands
Current state
| Type | Construction permit |
| Outcome | Under review |
| Applicant | University of Illinois Urbana-Champaign |
| Facility | U. of I. KRONOS Micro Modular Reactor (Champaign County, Illinois) |
| Docket | 50-618 |
| Submitted | 2026-03-31 |
| Docketed (accepted for review) | 2026-05-18 |
| NRC planned schedule | — |
| NRC target date | — |
| Final safety evaluation | — |
| Decision | — |
| Review time (docketed → decision) | — |
| Submitted → decision | — |
| NRC-reported review duration | — |
| NRC-reported resources vs estimate | — |
Review time is measured in average months from the date the NRC docketed the application to the decision. The NRC's own reported durations may measure to the final safety evaluation instead.
Notes
NRC target for the final safety evaluation: 2027-09. Non-power research reactor (section 104c). Schedule letter issued 6/16/2026. Submitted: FR 2026-07677: 'The construction permit application is dated March 27, 2026.' Final safety evaluation: Target September 2027. Decision: Under review.
Timeline
- 2026-03-31 — Application received: “Application Tendered | 3/31/2026 - A” (source)
- 2026-05-18 — Accepted for review (docketed): “The application was docketed on May 18, 2026.” (source)
The timeline is append-only: corrections are added as new entries. See the NNN Data License Terms for reuse of the event history.
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