Boiling water reactor core shroud head bolt retainer tool
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United States of America Patent
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Jul 19, 2016
Grant Date -
Nov 26, 2015
app pub date -
May 28, 2015
filing date -
Aug 11, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
The inventive tool is designed to ensure proper plant operation position of the core shroud head bolt assemblies of a boiling water nuclear reactor. The tool exerts an upward pulling force on stuck retainers to return them to the locking position around the nut. The tool includes a frame, an engagement member, and a collar. The engagement member is lowered toward and end of the bolt until it comes into contact therewith. Further movement of the engagement member causes the frame and collar to move upward, lifting the retainer and extending the spring.
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