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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
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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
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.”
Johann L. Hemmerich
Fusion Science and Technology | Volume 24 | Number 2 | September 1993 | Pages 137-144
Technical Paper | Tritium System | doi.org/10.13182/FST93-A30219
Articles are hosted by Taylor and Francis Online.
The most common basic process of air detritiation, which employs oxidation of tritiated gases in a catalytic recombiner and subsequent collection ofHTO on molecular sieve dryers, can also be used for a large-scale detritiation system for the next-step deuterium-tritium fusion device. Performance, economy, and reliability can be improved by modifying the design of basic elements, i.e., the recombiners and molecular sieve dryers, and by rearranging them in a system permitting multiple process path choices for optimum performance depending on demand. These improvements should result in a system that is (a) free of secondary tritium release by permeation; (b) economical, with <1 kW power required in a ready-to-operate “hot standby” condition; (c) capable of reducing inlet humidity of the order of 10000 ppm (volume) to 0.01 ppm at the outlet by using two adsorber stages in series; and (d) capable of providing the best starting condition for water processing: little or no dilution by H2O from isotopic swamping due to the use of two adsorber stages. The system detritiation factor is defined and discussed, and the overriding importance of high water retention efficiency is demonstrated.