Device for actuating a nuclear reactor control rod

Details Device for actuating a nuclear reactor control rod Device for actuating a nuclear reactor control rod

1979-07-24

1982-02-09

Cangialosi, Sal

Induced nuclear reactions: processes, systems, and elements

With control of reactor

By movement of control element or by release of neutron...

G21C 714

Patent

active

043148824

ABSTRACT:
A first assembly for low-speed translational displacement and dropping of a control rod comprises a leak-tight casing tube which communicates with the reactor vessel, a screw and nut system coupled to the control rod by means of the nut and a screw-retaining device which is capable of releasing the screw. In the event of accidental failure of the casing tube, upward displacement of the control rod and of the broken portion of the casing tube is limited by a second assembly comprising means for rotational locking of the screw drive rotor and calibrated elastic means for producing action on the rotor in opposition to the vertical thrust produced by failure of the casing tube.

REFERENCES:
patent: 3572161 (1971-03-01), Lichtenberger et al.
patent: 3775297 (1973-11-01), Ode et al.
patent: 3902963 (1975-09-01), Bertone et al.
patent: 3959071 (1976-05-01), Bevilaoquq
patent: 4073684 (1978-02-01), Cepkauskas
patent: 4092213 (1978-05-01), Nishimura

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