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Division Spotlight
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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.
Lothar Wolf, Ashok Rastogi, Dag Wennerberg, Thomas Cron, Edgar Hansjosten
Nuclear Technology | Volume 125 | Number 2 | February 1999 | Pages 136-154
Technical Paper | Reactor Safety | doi.org/10.13182/NT99-A2938
Articles are hosted by Taylor and Francis Online.
The contribution by the Heiss Dampf Reaktor Safety Program, phase III, to the German containment hydrogen research activities were twofold:1. to confirm the findings of the experiments in the Battelle Model Containment (BMC) in volumes of typically ~100 m3 by similar ones at a larger scale with a total volume of 500 m32. to broaden the database for assessing the emerging modeling strategy for larger scales toward more realistic subcompartment sizes.To supplement the results obtained in the BMC in a proper, controlled manner for additional model development and computer code verification, a total of seven experiments was performed, and the following positions for hydrogen ignition were examined:test group E12.1: hydrogen deflagration in a vertically oriented subcompartmenttest group E12.2: ignition close to the venttest group E12.3: accelerated jet ignition in a horizontal direction.The maximum peak pressure occurred for E12.3.3 at 1.8 bars under typical accelerated jet ignition conditions for 12 vol% initial H2 concentration. Because of larger vent openings, maximum peak pressures were generally lower than observed in BMC tests, whereas maximum temperatures were substantially higher, reaching 1000°C and above. A few comparisons between data and code results from CONTAIN, RALOC-HYDCOM, and CONTAIN/BASSIM computations are shown, indicating the need for further improvements.
