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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.
M. R. Mendelson, M. L. Storm
Nuclear Science and Engineering | Volume 45 | Number 2 | August 1971 | Pages 182-188
Technical Paper | doi.org/10.13182/NSE71-A20884
Articles are hosted by Taylor and Francis Online.
P1 blackness theory for infinite cylinders is developed in a manner analogous to the case of infinite slabs by defining effective diffusion theory cross sections in the “black” region which reproduce the desired boundary condition at the surface. Results of numerical analysis of a model problem are presented and the relative improvement of P1 blackness theory over normal P1 theory is compared with similar results for infinite slabs.
