Nuclear fuel assembly top nozzle having in-core instrument insertion structure using an upper core plate hollow guide pin
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United States of America Patent
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Jun 23, 2020
Grant Date -
Aug 10, 2017
app pub date -
Oct 22, 2015
filing date -
Dec 11, 2014
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Abstract
The present invention relates to a top nozzle and a nuclear reactor in which an in-core instrument, which is supposed to be inserted through a top head of a nuclear reactor, is inserted through a guide pin for an upper core plate. In a nuclear reactor including guide pins for aligning a top nozzle for a nuclear fuel assembly with an upper core plate of a nuclear reactor, a guide hole (210) is axially formed through the guide pins (200) and in-core instruments (10) are inserted through the guide holes (210).
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