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Spent fuel transfer project completed at INL
Work crews at Idaho National Laboratory have transferred 40 spent nuclear fuel canisters into long-term storage vaults, the Department of Energy’s Office of Environmental Management has reported.
János Gadó, István Vidovszky
Nuclear Science and Engineering | Volume 104 | Number 3 | March 1990 | Pages 217-221
Technical Paper | doi.org/10.13182/NSE90-A23721
Articles are hosted by Taylor and Francis Online.
Changes in the sign of the reactivity coefficient due to changes in the water density are very important in all water-moderated lattices. This sign is determined by the lattice parameters, such as the fuel enrichment and the lattice pitch. It is, of course, negative in undermoderated lattices. However, in special lattices, for example, in spent-fuel storage pools, this reactivity coefficient could be positive, even though one would predict a negative value from the lattice parameters. An example of this effect is presented, and the unexpected sign is explained.