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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.
W. W. CLENDENIN
Nuclear Science and Engineering | Volume 13 | Number 1 | May 1962 | Pages 46-53
Technical Paper | doi.org/10.13182/NSE62-A26127
Articles are hosted by Taylor and Francis Online.
Explicit expressions for the Marshak boundary conditions and vacuum gap conditions are developed through the P5 approximation. A blackness theory is developed for the accurate treatment of regions with high absorption of heavy elements. The relevant coefficients are expressed in terms of solutions of one velocity problems for which boundary conditions are given.
