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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.
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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.”
Hiroshi Takahashi
Fusion Science and Technology | Volume 20 | Number 4 | December 1991 | Pages 657-663
Accelerator/Reactor Waste Transmutation | doi.org/10.13182/FST91-A11946915
Articles are hosted by Taylor and Francis Online.
We propose the use of a proton accelerator to run a slightly subcritical fast breeder and incinerator of minor actinides. By injecting medium-energy protons into a subcritical assembly and by providing external neutrons produced by spallation and by high-energy fission reactions, the reactor can be operated in a safer condition than a reactor operated in a critical condition. The safety problems associated with super-criticality, which might be created by factors such as a positive Na void coefficient and fuel bowing, can be alleviated.
The metal-fueled fast breeder has small decrement in reactivity of power and burn-up, but by mixing the MA of 237Np with the oxide-fueled reactor, this decrement of reactivity can be reduced substantially. Thus, these reactors can be operated at a sub-criticality of k=0.99 with small beam proton power of 15 mA and 1 GeV energy (15 MW). This slightly subcritical condition produces a power distribution that is more or less flat, which is important from the point of view of reactor safety. The cost of the multi-stage cyclotron and linear accelerator and the proton energy for neutron yield is discussed.