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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.
H. L. Dodds, Jr., J. C. Robinson, A. R. Buhl
Nuclear Science and Engineering | Volume 47 | Number 3 | March 1972 | Pages 262-274
Technical Paper | doi.org/10.13182/NSE72-A22413
Articles are hosted by Taylor and Francis Online.
A transfer and scattering matrix technique is used to solve one-dimensional, time-dependent, multigroup, discrete ordinates equations and those including the delayed-neutron equations. The solution is obtained in the frequency domain as a distributed parameter transfer function. This technique can accomodate anisotropic, spatially distributed extraneous sources and general anisotropic scattering. The numerical problems associated with the technique are analyzed, and a procedure is presented for controlling them. The results obtained with this technique are in good agreement with (a) statics results obtained from standard discrete ordinates calculations, and (b) experimental kinetics noise data obtained from a critical fast assembly. Calculated results of a simulated pulsed-neutron experiment on a subcritical fast assembly are presented.