Induced nuclear reactions: processes – systems – and elements – Reactor structures – Circulating fluid within reactor
Reexamination Certificate
2005-04-05
2005-04-05
Keith, Jack W. (Department: 3641)
Induced nuclear reactions: processes, systems, and elements
Reactor structures
Circulating fluid within reactor
C376S245000, C376S246000, C376S260000, C376S392000, C376S407000, C073S650000, C073S862410, C073S862510
Reexamination Certificate
active
06876715
ABSTRACT:
Object of this invention is to provide an axial torsional vibration measurement device of the reactor internal pump capable of measuring the axial torsional vibration easily. The vibration detector2that detects vibration in the radial direction, and the sound detector3that detects vibration in the circumferential direction are fitted on cylindrical motor casing6, which contains the motor of a reactor internal pump. The dimension of both signals of a vibration waveform signal detected by the vibration detector2, and a sound waveform signal detected by the sound detector3are matched in vibration calculating device15, to thereby obtain an axial torsion vibration of a motor from the difference of both signals.
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Hikida Naoto
Matsumura Seiichi
Hitachi , Ltd.
Hogan & Hartson LLP
Keith Jack W.
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