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NC State celebrates 70 years of nuclear engineering education
An early picture of the research reactor building on the North Carolina State University campus. The Department of Nuclear Engineering is celebrating the 70th anniversary of its nuclear engineering curriculum in 2020–2021. Photo: North Carolina State University
The Department of Nuclear Engineering at North Carolina State University has spent the 2020–2021 academic year celebrating the 70th anniversary of its becoming the first U.S. university to establish a nuclear engineering curriculum. It started in 1950, when Clifford Beck, then of Oak Ridge, Tenn., obtained support from NC State’s dean of engineering, Harold Lampe, to build the nation’s first university nuclear reactor and, in conjunction, establish an educational curriculum dedicated to nuclear engineering.
The department, host to the 2021 ANS Virtual Student Conference, scheduled for April 8–10, now features 23 tenure/tenure-track faculty and three research faculty members. “What a journey for the first nuclear engineering curriculum in the nation,” said Kostadin Ivanov, professor and department head.
L. Trotignon, P. Thouvenot, I. Munier, B. Cochepin, E. Piault, E. Treille, X. Bourbon, S. Mimid
Nuclear Technology | Volume 174 | Number 3 | June 2011 | Pages 424-437
Technical Paper | TOUGH2 Symposium / Radioactive Waste Management and Disposal | dx.doi.org/10.13182/NT11-A11750
Articles are hosted by Taylor and Francis Online.
Simulations of atmospheric carbonation of concrete intermediate-low level waste cell components were conducted to evaluate potential chemical degradations affecting these components during the operating period of a radioactive waste repository in a deep Callovo-Oxfordian clay layer. Two-phase liquid water-air flow is combined with gas components diffusion processes, leading to a progressive drying of the concrete and an array of chemical reactions affecting the cement paste. The carbonation process depends strongly on the progression of the drying front inside the concrete, which in turn is sensitive to the initial water saturation and to nonlinear effects associated with permeability and tortuosity phenomenological laws.Results obtained with a modified version of ToughReact-EOS4 to represent realistic tortuosity evolution of materials with clogging and saturation are presented and commented upon. Strong porosity clogging of the carbonated concrete is not observed in the simulations; slight porosity opening is in general predicted, except for high initial liquid saturation of the concrete, in which case a moderate porosity reduction is found. Carbonation depths on the order of 0.6 to 1.1 × 10-3 myr-1 are predicted for cementitious components. However, these values are probably overestimations both in depth and intensity of carbonation. The model of cement drying needs some revision to correctly weight diffusion control in the discretized representation of the cement/air boundary. Also, the kinetic model of mineral reactivity needs improvements with respect to the influence of liquid saturation on reaction rates, which are actually strongly decreased in dry materials, and with respect to the protective effect of secondary carbonates.