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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.
Ehud Greenspan
Nuclear Science and Engineering | Volume 56 | Number 1 | January 1975 | Pages 103-106
Technical Note | doi.org/10.13182/NSE75-A26628
Articles are hosted by Taylor and Francis Online.
A new definition of reactivity, the source-multiplication reactivity, is presented. The physical meaning of the source-multiplication reactivity is discussed, and its relationship with the static and other definitions of reactivity is investigated. The definition of correction factors required for inferring different reactivities from source-multiplication measurements is also discussed.
