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 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
Latest Magazine Issues
Mar 2026
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
March 2026
Nuclear Technology
February 2026
Fusion Science and Technology
April 2026
Latest News
NRC approves TerraPower construction permit
Today, the Nuclear Regulatory Commission announced that it has approved TerraPower’s construction permit application for Kemmerer Unit 1, the company’s first deployment of Natrium, its flagship sodium fast reactor.
This approval is a significant milestone on three fronts. For TerraPower, it represents another step forward in demonstrating its technology. For the Department of Energy, it reflects progress (despite delays) for the Advanced Reactor Demonstration Program (ARDP). For the NRC, it is the first approval granted to a commercial reactor in nearly a decade—and the first approval of a commercial non–light water reactor in more than 40 years.
William M. Jacobi
Nuclear Technology | Volume 88 | Number 2 | November 1989 | Pages 183-189
Technical Paper | NSF Workshop on the Research Needs of the Next Generation Nuclear Power Technology / Fission Reactor | doi.org/10.13182/NT89-A34326
Articles are hosted by Taylor and Francis Online.
Although the time to develop new energy sources has been extended, the need for economic liquid-metal breeder reactors remains a key element in our economic future. In the United States, the development of liquid-metal reactors (LMRs) is directed toward reduction of fuel cycle and plant capital costs to promote early deployment as an economically competitive alternative to light water reactors. Reactor plant improvements have been made that focus on inherent reactor safety, plant modularity, and prepackaging of plant components. Alternate fuel systems and dramatic extension of fuel lifetimes offer potential for major cost improvements. With an economically competitive design, LMRs can be deployed in the near-term and refined over several design generations to achieve full commercial development by the time breeding and reprocessing are required to increase utilization of world uranium resources.