Nuclear reactor, guide tube support, and corresponding maintenance method
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United States of America Patent
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Jan 17, 2023
Grant Date -
Nov 25, 2021
app pub date -
Apr 4, 2019
filing date -
Apr 5, 2018
priority date (Note) -
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Abstract
A nuclear reactor includes guide tubes; and vessel head penetrations each comprising a tubular adapter fixed in one of the openings and defining an inner passage. Each vessel head penetration also includes a tubular sleeve engaged in the inner passage and axially extending in line with one of the guide tubes. Each sleeve is suspended by an upper axial sleeve end lying on an upper range on the corresponding adapter. A lower axial end of the sleeve projects axially into the vessel beyond the adapter and is separated from an upper axial end of the corresponding guide tube by an axial gap having an axial height of less than 50 millimeters.
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