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Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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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 Technology
Fusion Science and Technology
Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
P. Massee, L. H. Th. Rietjens, A. J. D. Lambert
Fusion Science and Technology | Volume 17 | Number 3 | May 1990 | Pages 439-451
Technical Paper | Energy Conversion | doi.org/10.13182/FST90-A29219
Articles are hosted by Taylor and Francis Online.
The in situ magnetohydrodynamic (MHD) concept is a new proposal to convert the power of a nuclear fusion tokamak reactor into electricity. To determine the feasibility of this concept, quasi-one-dimensional calculations of MHD generators with a mercury-cesium medium are performed. The question of whether the electron cyclotron radiation emitted by the fusion plasma can be absorbed by the medium in the MHD generator so as to be able to work with enhanced nonequilibrium ionization is studied. It is concluded that this cannot be realized in practice. To obtain reasonably compact MHD generators, the stagnation pressure at the inlet of the generator should be rather low (< 1.8 bars). Under these circumstances, however, the absorption length that is needed for the generator medium to absorb the cyclotron radiation is excessively large. It is concluded that an enthalpy extraction of 35% per generator leads to a cycle efficiency of only 16.7%. To convert 35% of the fusion power into electricity, the enthalpy extraction of each generator should be increased to ∼70%. This is not considered to be realistic in view of the enthalpy extractions obtained experimentally in seeded noble gas MHD generators at a stagnation temperature of ∼2000 K.