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First concrete marks start of safety-related construction for Hermes test reactor

May 8, 2025, 3:01PMNuclear News

Drilling begins. (Photo: Kairos Power)

Kairos Power announced this morning that safety-related nuclear construction has begun at the Oak Ridge, Tenn., site where the company is building its Hermes low-power test reactor. Hermes, a scaled demonstration of Kairos Power’s fluoride salt–cooled, high-temperature reactor technology, became the first non–light water reactor to receive a construction permit from the Nuclear Regulatory Commission in December 2023. The company broke ground at the site in July 2024.

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First concrete marks start of safety-related construction for Hermes test reactor

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