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The deadline arrives: Checking in on the Reactor Pilot Program
On May 23, 2025, President Trump signed Executive Order 14301, “Reforming Nuclear Reactor Testing at the DOE,” which instructed the Department of Energy to create a Reactor Pilot Program (RPP)—a new system in which companies could pursue DOE authorization to build and test their first-of-a-kind nuclear technologies. EO 14301 set an ambitious goal for that program: three reactors achieving criticality by July 4, 2026.
D. Graham Foster, Jr.
Nuclear Science and Engineering | Volume 8 | Number 2 | August 1960 | Pages 148-156
Technical Paper | doi.org/10.13182/NSE60-A25790
Articles are hosted by Taylor and Francis Online.
The age to indium resonance of nearly monoenergetic 0.97-Mev neutrons from spherical Na-γ-Be sources has been measured in water and kerosene. The age from a point source is inferred by extrapolation from measurements made with sources ¾ and ⅜ in. in diameter. The flux age is 13.9 ± 0.2 cm2 in water and 13.8 ± 0.2 cm2 in kerosene. Calculations by the moments method give 13.9 ± 0.1 cm2 in each medium, in excellent agreement with the measurements. The thermal migration area measured concurrently is 21.5 ± 0.4 cm2 in water and 20.6 ± 0.4 cm2 in kerosene. The migration area calculated from the resonance age is 22.2 ± 0.5 cm2 in water and 21.8 ± 0.5 cm2 in kerosene. Both of these are substantially larger than the measured values.