Nuclear reactor fuel elements
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United States of America Patent
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-
Nov 6, 1990
Grant Date -
N/A
app pub date -
Jan 30, 1989
filing date -
Mar 7, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nuclear reactor fuel element is helically wound with a strip which on one face at regular intervals along its length has dimples, and has a continuous rib on the opposite face. The strip contacts the associated fuel pin cladding via the dimples which effectively act as point contacts, and it contacts the neighboring fuel pins via the rib which also provides point contact. The regions between adjacent dimples are clear of the cladding and provide coolant flow paths thereby avoiding stagnant regions. The dimples may be arranged in two staggered sets one on each side of a central rib, and the strip then wound so that the dimples in each set each align axially with a respective dimple of the other set.
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