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.
Kenneth S. Allen, Edward P. Naessens, Jr.
Nuclear Technology | Volume 152 | Number 3 | December 2005 | Pages 354-366
Technical Paper | Radioactive Waste Management and Disposal | doi.org/10.13182/NT05-A3682
Articles are hosted by Taylor and Francis Online.
Analysis is performed on the production and destruction rates of recycled transuranics (TRUs) in a light water reactor (LWR) fuel assembly using a Monte Carlo-based fuel depletion code (MONTEBURNS 2.0). Thirteen TRUs were recycled into the LWR model through ten 3-yr burnup cycles for a total depletion period of 30 yr. The focus of the research was to determine the relative reduction of TRU waste within the fuel cycle and determine the impact of the recycled TRUs on fuel criticality, waste toxicity, activity, and heat-load production. The amount of TRUs could be reduced by more than a factor of 4 for a 30-yr period when these 13 isotopes were recycled.