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2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
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Two steps forward for U.K. advanced nuclear
This week, two significant announcements have emerged from the United Kingdom’s advanced reactor sector.
On June 14, Rolls-Royce, the United Kingdom National Nuclear Laboratory, and the Japan Atomic Energy Agency announced that they had signed two trilateral memorandums of cooperation to collaborate on “advanced modular reactor (AMR) technology, specifically high-temperature gas-cooled reactors (HTGR), and the coated particle fuel these reactors will use.”
Separately, on June 16, Bellevue, Wash.–based TerraPower announced that its Natrium reactor design has been formally submitted for U.K. regulatory review. The company also announced the formation of a new subsidiary, TerraPower UK Ltd.
19th International Conference on Probabilistic Safety Assessment and Analysis (PSA 2025)
Dr. Matthew Humberstone is a Senior Reliability and Risk Analyst in the Division of Risk Analysis at the United States Nuclear Regulatory Commission (USNRC). Dr. Humberstone works in the Performance and Reliability Branch in the Office of Nuclear Regulatory Research (RES) which uses risk assessments and insights to support a broad range of regulatory applications. Dr. Humberstone joined the US NRC in 2010 in the advanced reactor projects division and has since held several different positions including project manager, reactor analyst, and reliability and risk analyst. In his current role, Dr. Humberstone is the NRC’s representative on the American Nuclear Society (ANS)/American Society of Mechanical Engineers (ASME) Joint Committee of Nuclear Risk Management (JCNRM), representing the NRC on probabilistic risk assessment (PRA) standard development and endorsements.
Before joining the NRC, Dr. Humberstone worked on advanced monitoring, diagnostics, and prognostics for advanced reactor designs. He also worked at Sandia National Laboratories in their advanced reactor concepts division while in school. Dr. Humberstone received his bachelor’s degree in engineering physics from New Mexico State University, a master's degree in statistics from the University of Tennessee, and a master’s degree and Ph.D. in nuclear engineering from the University of Tennessee.
Last modified June 12, 2025, 9:57am CDT