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Division Spotlight
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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Nuclear Science and Engineering
September 2024
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August 2024
Fusion Science and Technology
Latest News
Taking shape: Fusion energy ecosystems built with public-private partnerships
It’s possible to describe fusion in simple terms: heat and squeeze small atoms to get abundant clean energy. But there’s nothing simple about getting fusion ready for the grid.
Private developers, national lab and university researchers, suppliers, and end users working toward that goal are developing a range of complex technologies to reach fusion temperatures and pressures, confounded by science and technology gaps linked to plasma behavior; materials, diagnostics, and electronics for extreme environments; fuel cycle sustainability; and economics.
Shinsuke Tashiro, Gunzo Uchiyama, Takuya Ohno, Yuki Amano, Ryoichiro Yoshida, Hithoshi Abe
Nuclear Technology | Volume 208 | Number 7 | July 2022 | Pages 1205-1213
Technical Paper | doi.org/10.1080/00295450.2021.2018272
Articles are hosted by Taylor and Francis Online.
A clogging behavior of a high-efficiency particulate air (HEPA) filter has been investigated for solvent fire accidents to provide valuable data for establishing a risk assessment method for reprocessing facilities in Japan. In this study, the burning rates of 30% tri-butyl phosphate (TBP)/dodecane and dodecane solvents and the differential pressure ΔP change of a high airflow–type HEPA filter applied in ventilation systems of reprocessing facilities in Japan were measured in the solvent burning. It was confirmed that the dodecane in the 30% TBP/dodecane mixed solvent burned mainly at the early stage of the burning of the mixed solvent and that the TBP burned mainly at the late stage of the burning of the mixed solvent. In addition, the burning rate of dodecane in the early stage and the rate of the TBP in the late stage were estimated, respectively. As a result, the former rate was almost the same as the burning rate of burning only the dodecane without TBP. Furthermore, the rapid increase of the ΔP of the HEPA filter was observed at the late stage of burning the mixed solvent. The increase of the release ratio of the airborne particles of unburned solvent (i.e., TBP and/or degradation products of TBP) and inorganic phosphorus (i.e., P2O5) was considered to contribute to the rapid increase. The empirical formulas for representing the relationship between the mass of the loading airborne particles onto the HEPA filter and the ΔP of the HEPA filter, except for the region of the rapid increase of the ΔP, under the mixed-solvent burning could be induced.