U.S. Department of Energy Approves Final Safety Analysis for Oklo's Groves Isotope Test Reactor, Advancing the Project Toward Operational Authorization
Oklo Inc. (NYSE: OKLO) (“Oklo”), an advanced nuclear technology company, today announced that the U.S. Department of Energy (DOE) has approved the Documented Safety Analysis (DSA) for Oklo Isotopes’ Groves Isotope Test Reactor in Texas under DOE’s Reactor Pilot Program (RPP).
This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260701843499/en/ Oklo's Isotopes Test Reactor (Image: Oklo)
The DSA is the facility’s final safety basis grounded on a detailed technical analysis of potential hazards, safety controls, and operating requirements needed to support safe startup. The DSA approval follows DOE’s approval of the Preliminary Documented Safety Analysis (PDSA), which established the facility’s preliminary safety basis during design and construction.
With both the PDSA and DSA approved, Groves moves from the documentation phase into DOE’s final pre-startup review. The remaining steps are DOE’s readiness review and startup approval. Following startup approval, the facility will be authorized to receive and load nuclear fuel, conduct startup testing, and proceed toward first criticality, the point at which a reactor achieves a controlled, self-sustaining nuclear chain reaction. Oklo is targeting first criticality for Groves in July 2026.
