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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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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Zhonglu Wang, Rebecca M. Howell, Stephen F. Kry, Eric A. Burgett, Nolan E. Hertel, Mohammad Salehpour
Nuclear Technology | Volume 168 | Number 3 | December 2009 | Pages 603-609
Neutron Measurements | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (PART 3) / Radiation Protection | doi.org/10.13182/NT09-A9276
Articles are hosted by Taylor and Francis Online.
A gold-and-indium dual-activation-foil-based Bonner sphere system (BSS) for neutron spectral measurements was investigated. A customized polyethylene holder was designed to simultaneously accommodate one indium foil and one gold foil placed orthogonally to each other. The holder, which fits into the center of a Bonner sphere, resembles a standard 6LiI(Eu) detector. The response of the dual-activation-foil-based system was calculated using the MCNPX code with different activation cross-section libraries (ACTL and ENDF/VI for gold foils and ACTL and 532DOS2 for indium foils). To verify and correct the calculated response functions, measurements were performed using 252Cf and AmBe neutron sources of known strengths. Working response functions were determined for neutrons with energies ranging from thermal to 20 MeV by applying correction factors from measurements in well-characterized beams to the Monte Carlo-calculated response functions. Measured data were successfully unfolded with the corrected response functions and found to be in good agreement with the known spectra.
