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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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
Glass strategy: Hanford’s enhanced waste glass program
The mission of the Department of Energy’s Office of River Protection (ORP) is to complete the safe cleanup of waste resulting from decades of nuclear weapons development. One of the most technologically challenging responsibilities is the safe disposition of approximately 56 million gallons of radioactive waste historically stored in 177 tanks at the Hanford Site in Washington state.
ORP has a clear incentive to reduce the overall mission duration and cost. One pathway is to develop and deploy innovative technical solutions that can advance baseline flow sheets toward higher efficiency operations while reducing identified risks without compromising safety. Vitrification is the baseline process that will convert both high-level and low-level radioactive waste at Hanford into a stable glass waste form for long-term storage and disposal.
Although vitrification is a mature technology, there are key areas where technology can further reduce operational risks, advance baseline processes to maximize waste throughput, and provide the underpinning to enhance operational flexibility; all steps in reducing mission duration and cost.
Toshihide Ogawa, Mikio Saigusa, Hisato Kawashima, Sadayoshi Kanazawa
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 305-308
Poster Presentations | doi.org/10.13182/FST01-A11963467
Articles are hosted by Taylor and Francis Online.
A back Faraday shield is proposed for improving a cooling design of Faraday shield and better antenna-plasma coupling of a fast wave antenna. The radiofrequency properties of an antenna with the back Faraday shield have been investigated in the JFT-2M tokamak. The loading resistance of the antenna was significantly higher than that of an antenna using a conventional Faraday shield. The back Faraday shield antenna did not show adverse results for launching fast waves up to 550 kW of coupled power. The electron heating was observed by a soft X ray spectrum measurement increased by 0.35 keV during 250 kW of fast wave application.
