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The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
2021 ANS Winter Meeting and Technology Expo
November 30–December 3, 2021
Washington, DC|Washington Hilton
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Nuclear Science and Engineering
Fusion Science and Technology
Hanford completes wastewater basin work to support tank waste treatment
Record-breaking heat and the vast size of the job did not stop the Department of Energy’s Office of River Protection and its tank operations contractor, Washington River Protection Solutions (WRPS), from completing a construction project critical to the Hanford Site’s Direct-Feed Low-Activity Waste program for treating radioactive tank waste.
A. Khodak, P. Titus, I. Zatz, A. Nagy, J. Winkelman, R. Nazikian, T. Scoville
Fusion Science and Technology | Volume 68 | Number 2 | September 2015 | Pages 373-377
Technical Paper | Proceedings of TOFE-2014 | dx.doi.org/10.13182/FST14-951
Articles are hosted by Taylor and Francis Online.
The neutral beam copper pole shields currently in service at DIII-D have experienced localized melting and fatigue cracks in the grooves machined in the back of the copper plates. Higher power is now desired out of the neutral beams, requiring a pole shield upgrade to handle the elevated thermal load. The Princeton Plasma Physics Laboratory is responsible for the design and manufacturing of the pole shield upgrade.
Since the heat flux on the pole shield is highly localized, the new design includes a molybdenum insert, positioned in the area of the maximum thermal loading, mounted in the copper plate, which is cooled by a single cooling channel. A ten segment design was implemented, with loose tongue and groove connections, to allow in situ assembly and maintenance.
To validate the design, numerical simulations were performed using ANSYS workbench and consisted of two stages: 1. during the first stage unsteady fluid flow simulation was performed in conjunction with heat transfer analysis in the insert, copper plate, and water cooling system; 2. during the second stage, the temperature distribution was used to specify thermal strains, and perform transient structural analysis.