System for preventing erroneous operation of control rods

Details System for preventing erroneous operation of control rods System for preventing erroneous operation of control rods

1979-02-22

1981-08-04

Cangialosi, S. A.

176 24, G21C 706

Patent

active

042820618

ABSTRACT:
System for preventing erroneous operation of control rods for securing a safety control of a nuclear reactor. The erroneous operation preventing system is comprised of a control rod objective position setting means for setting an objective position of a control rod, a control rod position detector for detecting a position of the control rod, and an operation means which operates a difference between the objective position set up and the detected position of the control rod being operated and produces a signal for blocking the control rod operation when the control rod is operated so that the difference goes away from zero. The erroneous operation blocking system stops the control rod at the first possible control rod stopping position. The erroneous operation preventing system includes a return operation commanding unit for compensating for erroneous operation of the control rod when the control rod is erroneously operated.

REFERENCES:
patent: 2927070 (1960-03-01), Shong, Jr.
patent: 3706921 (1972-12-01), Rosen
patent: 3890607 (1975-06-01), Pelene et al.
patent: 3933580 (1976-01-01), Aleite et al.
patent: 4016034 (1977-04-01), Musick
patent: 4055463 (1977-10-01), Torres

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