Tracker · Pre-application
Deep Fission
The U.S. Nuclear Regulatory Commission (NRC) is currently engaged in pre-application activities with Deep Fission, Inc, regarding a combined license application for the Deep Fission Borehole Reactor 1 (DFBR-1). The Deep Fission Borehole Reactor 1 (DFBR-1), with a minimum diameter of approximately 30 inches, will be emplaced and operate at a depth of approximately 1 mile. This design takes advantage of the hydrostatic pressure, provided by depth, equaling approximately 160 atm. Each reactor produces 45 megawatts thermal (45 MWt) of steam which, when, upon reaching the surface, is used to generate up to 15 megawatts of electric power (15 MWe).
- Who
- Deep Fission, Inc.
- Design
- Not stated
- Reactor type
- Light Water Reactors
- Status
- Active on the NRC index
- What
- Pre-Application activities associated with a future combined license application.
- When
- May 2024 to Present
- Site
- Not stated on the NRC page in this snapshot.
- NRC page reviewed
- Tuesday, September 15, 2026
Dockets
Status timeline
Dates are printed as the NRC page prints them, including the actual (A) or target (T) mark.
The NRC page in this snapshot does not list a milestone table.
NRC activity table
| Product | Type | Reference | Status |
|---|---|---|---|
| NRC Regulatory Engagement Plan | Regulatory Engagement Plan | ML26111A380 | No Review Requested |
| Conceptual Design Review of the Deep Borehole Pressurized Water Reactor (DB-PWR) | White Paper | ML24172A286 | Review Complete |
| Conceptual Design Description | White Paper | ML26112A157 | Review in Progress |
Related Federal Register notices
Included when a notice shares a docket printed on the NRC page, or when the notice title repeats the project or design name. Other NRC notices are left out.
No in-scope Federal Register notice is linked to this project.