ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
Latest Magazine Issues
Jul 2026
Jan 2026
2026
Latest Journal Issues
Nuclear Science and Engineering
August 2026
Nuclear Technology
July 2026
Fusion Science and Technology
Latest News
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.
D. F. Montague, J. B. Fussell
Nuclear Science and Engineering | Volume 74 | Number 3 | June 1980 | Pages 199-209
Technical Paper | doi.org/10.13182/NSE80-A20120
Articles are hosted by Taylor and Francis Online.
A procedure for determining the expected number of failures of systems undergoing phased missions is described. Approximations to this procedure are also presented. The emergency core cooling system of a boiling water reactor is analyzed to demonstrate this methodology. The results of this analysis show that these procedures have practical application and the approximations provide a close estimate to the exact expected number of failures.