Fact plan-025
Reactor: built and heat-tested in Hawthorne, California (plan-008); loaded unfueled onto a C-17 at March Air Reserve Base on 15 February 2026 and flown to Hill Air Force Base, Utah, with the Energy Secretary and a Defense under secretary aboard (World Nuclear News, 18 February); from Hill it went 'by road' to Emery County (Valar's Castle Country page). No route, date or oversize-load permit for the road leg was found. Core test: the NOVA core was assembled and run at the National Criticality Experiments Research Center, Nevada, in November 2025 (orig-008). Fuel: World Nuclear News, citing Reuters, reported the Energy Secretary saying the fuel would move separately from the Nevada National Security Site; DOE's May 2026 packaging approval covers up to 24 single-block packages from NCERC to the Ward 250 site until 30 June 2027 (plan-014, safe-010, safe-012). Neither DOE document gives shipping dates, route or mode, and no state or county notice of a shipment was found (safe-012). Spent fuel: one core, to go in dry casks to an unnamed DOE-approved facility after operations (safe-023); Utah's July 2026 pact with DOE separately contemplates a campus that could accept out-of-state spent fuel (gov-030). For scale, World Nuclear News called the airlifted unit 'the 5 MW Ward250' able to power about 5,000 homes, without saying whether 5 MW means heat or electricity; Ward 250's safety papers limit it to 100 kW of heat, at most one-fiftieth of that, and it is not built to supply the grid (orig-031, plan-018).
- US microreactor transported by air (World Nuclear News, 2026-02-18) news “Fuel for the reactor will be transported separately from the Nevada National Security site”
- Castle Country (Valar Atomics, 2026-09) primary company “From Hill Air Force Base it came here, by road, to Emery County.”
- Safety Evaluation Report, Letter Amendment of Certificate of Compliance No. 9979, Revision 20 (Valar Atomics fuel elements) (U.S. Department of Energy, Packaging Certification Program, 2026-05-20) primary government “This authorization expires on June 30, 2027, or at completion of shipments”
- NEPA Determination DOE-ID-26-005: Valar Ward250 Research Reactor (U.S. Department of Energy, Office of Nuclear Energy, 2026-04-22) primary government “Spent fuel will be transferred to dry storage for transport to a DOE-approved facility.”
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