LOWER END PLUG WITH TEMPERATURE REDUCTION DEVICE AND NUCLEAR REACTOR FUEL ROD INCLUDING SAME
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United States of America Patent
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app pub date -
Nov 15, 2012
filing date -
Apr 17, 2012
priority date (Note) -
Abandoned
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Abstract
A pedestal plug is sized to fit into a cladding of a nuclear fuel rod. A lower end plug is sized and shaped to plug the lower end of the nuclear fuel rod. One of the pedestal plug and the lower end plug includes a protrusion and the other of the pedestal plug and the lower end plug includes a hollow region into which the protrusion fits. In one embodiment the pedestal plug is a hollow cylindrical pedestal plug and the protrusion is disposed on the lower end plug. The protrusion disposed on the lower end plug suitably press fits into the hollow cylindrical pedestal plug. In a method of assembling a fuel rod of a nuclear reactor, the pedestal plug and the lower end plug are press fit together, and after the press fitting the lower end plug is welded to a cladding of the fuel rod with the pedestal plug disposed inside the cladding.
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