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ANS Student Conference 2025
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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.
J. Weede, J. Vetrovec, H. Beck, J. Chiu, A. Goldner
Fusion Science and Technology | Volume 8 | Number 1 | July 1985 | Pages 1247-1252
Impurity Control and Vacuum Technology | Proceedings of the Sixth Topical Meeting on the Technology of Fusion Energy (San Francisco, California, March 3-7, 1985) | doi.org/10.13182/FST85-A39938
Articles are hosted by Taylor and Francis Online.
An actively-cooled dump module design is being developed for use in the MFTF-B long pulse neutral beamlines. The modular approach allows for application of the same design inseveral different areas, such as positive ion dumps, neutral dumps and beamline apertures. The dump modules are required to dissipate up to 1.2 MW of beam power with peak heat fluxes as high as 1500 W/cm2 for a lifetime of 50,000 cycles. The modules are constructed from two rows of 1.91 cm O.D. × 0.318 cm wall (0.75 × 0.125 in.) oxygen-free copper tubing, staggered to achieve maximum optical density. The tubes are bent into a “C” shape and connected to large diameter manifolds at each end. Thermal analysis of conduction in the tube wall has been performed to predict inner wall heat flux and tube wall temperature profiles. The results have been used both as an input to critical heat flux assessment as well as an input to NASTRAN stress analysis. The NASTRAN analysis has shown that tube deflections will be within allowable limits and that the design life will be ≅ 100,000 cycles.
