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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.
Nuclear Science and Engineering | Volume 163 | Number 2 | October 2009 | Pages 99-117
Technical Paper | dx.doi.org/10.13182/NSE163-99
Articles are hosted by Taylor and Francis Online.
Step-refined on-the-fly convergence diagnostics have been studied for Monte Carlo fission source distribution. The diagnostics consist of progressive relative entropy, its differenced series, and the Wilcoxon signed rank sum. The new aspect in the present work is the examination of a smaller number of cycles preceding the current cycle at step 1 diagnosis and the increase of the number of cycles for examination at step 2 diagnosis. This refinement process proceeds along with the actual progression of cycles and continues until the number of cycles for examination becomes >66% of the declared convergence cycle or the declaration of convergence stays in the same cycle for five consecutive steps. In each diagnostic step the Wilcoxon signed rank sum of the difference series of progressive relative entropy is examined to check if the downward crossing of the median of the range of the Wilcoxon rank sum occurs. The feasibility test was conducted for the fresh fuel vault of a pressurized water reactor (PWR) with the checkerboard placement of fuel bundle units and water-filled units, the critical sphere known as Godiva, the three-dimensional whole-core model of a PWR, and the Whitesides' k-effective of the world problem. The performance was observed to be consistent with or more conservative than that of the posterior relative entropy diagnosis. The methodology can potentially be extended to problems in need of 5000 cycles or more until convergence. A safeguard different from posterior diagnostics is proposed.