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Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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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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Fusion Science and Technology
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.
Carmen García-Rosales, Sigrid Deschka, Wolfgang Hohenauer, Reiner Duwe, Eric Gauthier, Jochen Linke, Martin Lochter, Werner K. W. M. Malléner, Laurenz Plöchl, Peter Rödhammer, Armando Salito, Asdex-Upgrade Team
Fusion Science and Technology | Volume 32 | Number 2 | September 1997 | Pages 263-276
Technical Paper | First Wall Technology | doi.org/10.13182/FST97-A19896
Articles are hosted by Taylor and Francis Online.
Tiles of fine-grain graphite coated with tungsten layers by different plasma spray techniques (thickness 100 to 550 µm) and by physical vapor deposition (PVD) (thickness 20 to 100 µm) were subjected to heat fluxes, as expected for the divert or of the Axially Symmetric Divertor Experiment (ASDEX)-Upgrade tokamak. By a stepwise increase of the applied heat flux up to 16 MW/m2 and different pulse durations (1 to 5 s), the maximum load for disabling damage of the coating was determined. The fatigue behavior of the coatings was investigated by cyclic loading. The results show that plasma spray coatings are able to withstand heat loads up to 15 MW/m2 for a 2-s pulse without structural changes and cyclic loading with 1000 cycles at 10 MW/m2 and a 2-s pulse. The PVD coatings show damage by crack formation and melting at slightly lower heat loads than most of the plasma spray coatings. Under cyclic loading, the thin PVD coatings fail by extensive crack formation. The results of the tests indicate that the good performance of the plasma spray coatings is related to their higher porosity, which provides a crack-arresting mechanism, and to their mechanical strength.