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Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
C.R. Kennedy, K. F. Flynn, R. M. Arons, J. T. Dusek
Nuclear Technology | Volume 56 | Number 2 | February 1982 | Pages 278-288
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT82-A32855
Articles are hosted by Taylor and Francis Online.
Specimens of SYNROC B were fabricated under a variety of conditions and doped with simulated radwaste species. Two of the component phases of SYNROC B, perovskite and zirconolite, doped with strontium and uranium, respectively, were also fabricated. All specimens were carefully characterized for both phase content and dopant partitioning via x-ray diffraction and electron beam microanalysis techniques. These specimens were then subjected to neutron activation and leached, and the leachant was analyzed by gamma spectrum analysis. All data were compared with similar analyses of Pacific Northwest Laboratory glass 76-68, a borosilicate glass. It was found that both perovskite and properly prepared SYNROC B leach at about the same rate as the borosilicate glass, while zirconolite appears to be at least an order of magnitude more resistant to leaching. When SYNROC is prepared under undesirable conditions and contains Ba2Ti9O20, cesium leach rates are one to three orders of magnitude higher than in the correctly composed SYNROC B.
