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U.S. Department of Energy
Office of Scientific and Technical Information

Nuclear reactor remote disconnect control rod coupling indicator

Patent ·
OSTI ID:6810801
A coupling indicator for use with nuclear reactor control rod assemblies which have remotely disengageable couplings between the control rod and the control rod drive shaft is described. The coupling indicator indicates whether the control rod and the control rod drive shaft are engaged or disengaged. A resistive network, utilizing magnetic reed switches, senses the position of the control rod drive mechanism lead screw and the control rod position indicating tube, and the relative position of these two elements with respect to each other is compared to determine whether the coupling is engaged or disengaged.
Assignee:
Energy Research and Development Administration
Patent Number(s):
US 4053355
OSTI ID:
6810801
Country of Publication:
United States
Language:
English