Lower end fitting locating pins
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 29, 2022
Grant Date -
Oct 17, 2013
app pub date -
Mar 6, 2013
filing date -
Mar 6, 2013
priority date (Note) -
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Abstract
A nuclear reactor has a core installed on a lower core plate and formed from multiple fuel assemblies, each fuel assembly including a structural cage assembly. The structural cage assembly has an upper end fitting, mid grids, and a lower end fitting (LEF). The LEF positions the fuel assembly using four locating pins located at each corner of the LEF. The pins position the fuel assembly laterally by mating with receiving holes in the lower core plate. The locating pins have a chamfered tip with a flat end. The chamfered tip allows for a greater positioning margin when installing the fuel assembly in the core by guiding the pins into holes in the lower core plate, and the flat tip provides strength and stability in case the assembly is inadvertently rested on the tip of the pin instead of the LEF pads.
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