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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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No impact from Savannah River radioactive wasps
The news is abuzz with recent news stories about four radioactive wasp nests found at the Department of Energy’s Savannah River Site in South Carolina. The site has been undergoing cleanup operations since the 1990s related to the production of plutonium and tritium for defense purposes during the Cold War. Cleanup activities are expected to continue into the 2060s.
Chaung Lin, Zhih Pao Lin, Wern Jiahn Jiang
Nuclear Science and Engineering | Volume 102 | Number 2 | June 1989 | Pages 134-139
Technical Paper | doi.org/10.13182/NSE89-A23638
Articles are hosted by Taylor and Francis Online.
A method based on a forward dynamic programming technique is applied to load-following control of a boiling water reactor. The control strategy obtained is optimal and satisfies operation constraints. A coarse-mesh, one-dimensional model using the two-group diffusion theory with Doppler, void, and xenon feedbacks is developed to reduce computer time. The control rods are assumed to be fixed during load maneuvers, and variations in core power are accomplished through core flow. An off-line daily load-following analysis needs ∼2000 CPU s on a PRIME 9950 computer. With some relaxation, computation time can be reduced to several hundred seconds. Thus, an on-line calculation that leads to an approximate closed-loop control is feasible.