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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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DOE-NE’s newest fuel consortium includes defense from antitrust laws
The Department of Energy's Office of Nuclear Energy is setting up a nuclear fuel Defense Production Act Consortium that will seek voluntary agreements with interested companies “to increase fuel availability, provide more access to reliable power, and end America’s reliance on foreign sources of enriched uranium and critical materials needed to power the nation’s nuclear renaissance.” According to an August 22 DOE press release, the plan invokes the Defense Production Act (DPA) to give consortium members “defense from antitrust laws when certain criteria are met” and “allow industry consultation to develop plans of action.” DOE-NE is looking for interested companies to join the consortium ahead of its first meeting, scheduled for October 14.
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.