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Division Spotlight
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
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.
J. Krejčí, V. Vrtílková, J. Kabátová, A. Přibyl, P. Gajdoš, D. Rada, J. Šustr
Nuclear Technology | Volume 201 | Number 1 | January 2018 | Pages 52-65
Technical Paper | doi.org/10.1080/00295450.2017.1389595
Articles are hosted by Taylor and Francis Online.
High-temperature oxidation of WWER fuel cladding under loss-of-coolant accident conditions represents a significant problem and an issue of ongoing study. A study of oxidation kinetics under high-temperature steam oxidation was carried out on a sponge-based E110 cladding tube material in as-received state and exposed to a temperature range between 600°C and 1300°C. Metallographic evaluation of the samples was used to determine the analytical dependencies of the processes of the oxide layer and the oxygen stabilized alpha-zirconium layer formation.
The formation of this oxide layer and the layer under the oxide (oxygen stabilized alpha-zirconium) was usually considered to follow a parabolic rate law (e.g., Cathcart-Pawel for Zircaloy, and Solyany for iodide/electrolytic E110), however, the recently performed UJP PRAHA a.s. (UJP) experiments showed different kinetics for oxide layers in the whole temperature range between 600°C and 1300°C. The metallographic evaluation showed changing kinetics of oxide layer formation for several temperatures. Therefore, a new oxide layer formation kinetics, different from the parabolic law, was designed. The parabolic rate law was optimized for the oxygen stabilized alpha-zirconium, which is applicable in the temperature range between 950°C and 1300°C.
The UJP experimental database containing more than 1000 data values was compared with the newly developed UJP correlations and other available correlations for iodide/electrolytic E110 and Zircaloy alloys. The UJP correlation for weight gain kinetics was compared with experimental data from different laboratories. Finally, a statistical analysis of all tested correlations is provided.
