Shape-memory alloys in the construction of nuclear fuel spacer g

Details Shape-memory alloys in the construction of nuclear fuel spacer g Shape-memory alloys in the construction of nuclear fuel spacer g

1992-09-25

1994-03-29

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Grids

376313, 376440, 376442, 376352, G21C 334

Patent

active

052992462

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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C. M. Wayman, "Some Applications of Shape-Memory Alloys", Journal of Metals, pp. 129-137, Jun. 1980.
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Kirk-Othmer Encyclopedia of Chemical Technology, John Wiley & Sons, New York, vol. 20, pp. 726-736 (1982).
Raychem Corporation, Menio Park, Calif., various documentation and illustrations of Raychem products "Tinel" and CryoFit.

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