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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.
John F. Carew
Nuclear Science and Engineering | Volume 78 | Number 3 | July 1981 | Pages 296-297
Technical Note | doi.org/10.13182/NSE81-A20307
Articles are hosted by Taylor and Francis Online.
An equivalence relation for the effective escape cross section is derived for a lattice of annular absorber rods. The effective cross section is expressed in terms of the absorber cross section and inner and outer moderator sticking probabilities and surface escape probabilities. The lattice Dancoff and Bell factors are determined using the rational approximation for the surface escape probabilities.
