Control rod drive mechanism for nuclear reactor
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United States of America Patent
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Aug 19, 2014
Grant Date -
Dec 16, 2010
app pub date -
Mar 12, 2010
filing date -
Jun 10, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A control rod drive mechanism (CRDM) for use in a nuclear reactor, the CRDM comprising: a connecting rod connected with at least one control rod; a lead screw; a drive mechanism configured to linearly translate the lead screw; an electromagnet coil assembly; and a latching assembly that latches the connecting rod to the lead screw responsive to energizing the electromagnet coil assembly and unlatches the connecting rod from the lead screw responsive to deenergizing the electromagnet coil assembly. The latching assembly is secured with and linearly translates with the lead screw, while the electromagnet coil assembly does not move with the lead screw. The electromagnet coil assembly is at least coextensive with a linear translation stroke over which the drive mechanism is configured to linearly translate the lead screw.
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