Storage rack for nuclear fuel assemblies
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United States of America Patent
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-
Aug 23, 1983
Grant Date -
N/A
app pub date -
Nov 14, 1977
filing date -
Nov 14, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rack is provided for either temporary or permanent storage of spent nuclear fuel assemblies. The rack consists of a checkerboard array of substantially square cells. Alternate cells in each row include neutron-absorbing poison material, either in the cell wall or otherwise, while the other cells are storage cells for the fuel assemblies. For temporary storage, the poison cells also contain a moderator which may be water or which may be a solid hydrogen compound. For permanent storage fuel assemblies that have decayed to a lower level of radioactivity, the moderator is eliminated so that all the cells can contain spent fuel assemblies, and the entire rack structure is encased in concrete for shielding.
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