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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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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Robby Christian, Hyun Gook Kang (RPI)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1-9
Operating criteria for Emergency Core Cooling System (ECCS) has been prescribed to maintain integrity of Zr-based fuel assemblies during a Loss of Coolant Accident (LOCA). With new Accident Tolerant Fuel (ATF) designs planned to replace current nuclear fuels, the ECCS criteria should be re-configured properly. This paper proposes a risk-informed approach to establishing the ECCS criteria for Silicon Carbide (SiC) cladding ATF. SiC failure modes were categorized into deterministic and stochastic. A methodology to calculate SiC stochastic tensile fracture probability was outlined. The cladding functional failure probability was formulated from the combination of fractures in each layer of SiC clad. ECCS performance, which includes mass flow rate and actuation timing of high and low pressure active injection, were varied to investigate clad failures. The SiC clad failure probability was found in the order of 1E-15 when it replaced Zr-clad while keeping ECCS criteria the same. A deterministic clad failure occurred when ECCS actuation exceeds 936 seconds after a large break LOCA, or when the ECCS mass flow rate was less than 4% of its designed capacity. When the likelihood of ECCS to perform beyond this criteria was less than 7E-4, the overall risk from deterministic and stochastic failures was less than ECCS risk in cooling Zr-clad of 1E-3. Results suggested that ECCS criteria for SiC may be relaxed compared to the criteria for Zr-clad. This relaxation may provide reductions in operational and maintenance costs.