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Division Spotlight
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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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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.”
G. I. Ofoegbu, K. J. Smart, B. Dasgupta
Nuclear Technology | Volume 163 | Number 1 | July 2008 | Pages 24-30
Technical Paper | High-Level Radioactive Waste Management | doi.org/10.13182/NT08-A3966
Articles are hosted by Taylor and Francis Online.
Thermal-mechanical analyses were performed to assess the effects of thermal loading on the stability of emplacement drifts used for nuclear waste disposal. The analyses focused on a U.S. Department of Energy design concept and the rock-mass properties for a potential Yucca Mountain repository. The design concept includes using forced ventilation to reduce the amount of waste-generated heat transmitted into the rock during the operational period. The analyses indicate that thermally induced stress during the forced-ventilation period would be insufficient to cause instability of the drifts. Thermal stresses, however, would increase rapidly after forced ventilation is terminated and would cause overstress of rock near the perimeter of the drifts. Such overstress would not cause instability if the drifts are provided with effective ground support. The overstress, however, would persist for a long time and indicates a potential for progressive spallation of the drift perimeter after any installed ground support loses effectiveness. Progressive degradation of drifts and the accumulation of rock rubble inside the drift openings would result from such spallation.