Shape-memory alloys in the construction of nuclear fuel spacer grids
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United States of America Patent
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Mar 29, 1994
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N/A
app pub date -
Sep 25, 1992
filing date -
Sep 25, 1992
priority date (Note) -
Expired
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Abstract
A fuel assembly supporting structure for a nuclear reactor fuel assembly which comprises a two-way shape-memory alloy. A shape-memory alloy is selected which has an overall transition temperature range substantially above atmospheric temperature and substantially below a temperature experienced by the shape-memory alloy under reactor operating conditions. By using a shape-memory alloy in the design, the support structure assumes a first configuration for securely supporting one or a plurality of nuclear reactor components at a temperature above the overall transition temperature range and assumes a second configuration for loosely engaging the reactor components below the transition temperature range.
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