Device for measuring the drop time of control rods into the core of a nuclear reactor
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United States of America Patent
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Aug 12, 2003
Grant Date -
Oct 18, 2001
app pub date -
Feb 23, 2001
filing date -
Apr 14, 2000
priority date (Note) -
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Abstract
The measurement device comprises a real-time measurement-signal acquisition module (25) and means (23, 24) for connecting the cables for picking up the voltage from electrical windings for measuring the movement of the control rods to the acquisition module (25), in order to deliver, to the acquisition module (25), voltage signals corresponding to the voltage induced in the windings while the control rods are being dropped. The signal acquisition module (25) is thus permanently connected to the voltage-signal pickup cables (29) and the signals relating to the set of nuclear reactor control rods may be recorded simultaneously. Means (26, 27) for using the voltage signals delivered by the acquisition system (25) allow the drop times of the control rods to be determined.
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