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Division Spotlight
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.
Meeting Spotlight
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
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
Paulo J. Knob, Ralf D. Neef, Hartwig Schaal
Nuclear Technology | Volume 64 | Number 3 | March 1984 | Pages 217-228
Technical Paper | Fission Reactor | doi.org/10.13182/NT84-A33351
Articles are hosted by Taylor and Francis Online.
For pebble bed reactors, the problem exists that an in-core instrumentation is not possible. As a flux mapping method, we have developed the three-dimensional code ZELT-3D, which reconstructs the flux distribution in the core using the detector signals of the side reflector instrumentation as input. The results of a calculation utilizing this code and its associated theory for perturbation of flux distributions by absorber rods show that a three-dimensional flux mapping of perturbed fluxes is possible and positions of absorber rod tips can be detected well. We think that this flux mapping method can serve to locate xenon oscillations, misloaded core areas, and broken parts of absorber rods.
