Anti-seismic apparatus for control element drive mechanisms
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United States of America Patent
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Dec 19, 2017
Grant Date -
Dec 15, 2016
app pub date -
Dec 23, 2014
filing date -
Aug 8, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An anti-seismic apparatus for control element drive mechanisms of a nuclear reactor includes: an anti-seismic support plate including a plurality of insertion holes in which the control element drive mechanisms are respectively inserted; and bushings inserted between outer surfaces of the control element drive mechanisms and inner surfaces of the insertion holes. The support plate includes an upper support plate comprising a plurality of first insertion holes, a lower support plate comprising a plurality of second insertion holes at positions corresponding to the first insertion holes, and a connection part connecting the upper support plate and the lower support plate. The connection part includes a support beam vertically extending from an end portion of the lower support plate, an inner flange extending inward from an upper end portion of the support beam, and an outer flange extending outward from the upper end portion of the support beam.
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