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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.
Henry H. Hatjsner, John L. Zambrow
Nuclear Science and Engineering | Volume 1 | Number 1 | March 1956 | Pages 92-101
Technical Paper | doi.org/10.13182/NSE56-A17661
Articles are hosted by Taylor and Francis Online.
Uranium powder can readily be prepared by hydriding solid uranium and by the decomposition of the hydride. The powder particles are of –325 mesh size. This powder compacts to density varying between 12 and 14 gm/cc. Sintering subsequent to compacting results in a material of high strength characterized by a slight porosity and coarse grain structure. Hot pressing uranium powder in the alpha temperature range at pressures of approximately 10 to 15 tsi results in a material of perfect density and a small grain structure. Hot compacting uranium powder is a process perfectly feasible for production.