Kairos Hermes 2 two-unit test reactor facility construction permits: NRC construction permit review for Kairos Power LLC — issued, 14.4 months from docketing to decision. 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 | Issued |
| Applicant | Kairos Power LLC |
| Facility | Hermes 2 test reactor facility (Oak Ridge, Tennessee) |
| Docket | 50-611, 50-612 |
| Submitted | 2023-07-14 |
| Docketed (accepted for review) | 2023-09-11 |
| NRC planned schedule | 14 months |
| NRC target date | — |
| Final safety evaluation | 2024-07-19 |
| Decision | 2024-11-21 |
| Review time (docketed → decision) | 14.4 mo |
| Submitted → decision | 16.3 mo |
| NRC-reported review duration | 10 months |
| NRC-reported resources vs estimate | 43% under |
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
The efficiency table marks Hermes 2 with an asterisk; the footnote text was not present in the fetched page. The same page credits 'proactive exemptions to leverage environmental information from the Kairos Hermes 1 review' (environmental assessment instead of EIS). FSE (07/19/2024) came 10 days after the ADVANCE Act was signed; most of the review predates the Act. Docketed: NRC page: schedule letter issued 10/11/2023.
Timeline
- 2023-07-14 — Application received: “The application for the construction permits was received on July 14, 2023.” (source)
- 2023-09-11 — Accepted for review (docketed): “This action becomes effective on September 11, 2023.” (source)
- 2024-07-19 — Final safety evaluation issued. (source)
- 2024-11-20 — Commission mandatory hearing. (source)
- 2024-11-21 — Issued: “The Construction Permits CPTR-7 and CPTR-8 were issued on November 21, 2024.” (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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See all 75 reviews in the NRC Licensing Review Tracker →
Sources
- https://www.nrc.gov/licensing-applications/non-power-facilities/new-facility-licensing/hermes-2-kairos-application
- https://www.federalregister.gov/d/2023-16605
- https://www.federalregister.gov/d/2023-19935
- https://www.federalregister.gov/d/2024-20812
- https://www.federalregister.gov/d/2024-28025
- https://www.nrc.gov/regulations-legislation/effectiveness-efficiency-and-timeliness-initiatives-that-support-unleashing-american-energy/licensing-efficiencies