Induced nuclear reactions: processes – systems – and elements – With control of reactor – By movement of control element or by release of neutron...
Patent
1980-12-08
1983-12-27
Schafer, Richard E.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By movement of control element or by release of neutron...
376228, 376233, G21C 712
Patent
active
044230028
ABSTRACT:
Apparatus for controlling a nuclear reactor by vertical displacement of a unit absorbing neutrons, comprising, inside a sealed enclosure (1) in communication with the interior of the reactor, a movable magnetic piece (6) connected to a control shaft (3) which is itself connected to the absorbent unit. This magnetic piece (6) has at least two radial projections (7). The magnetic piece (6) is displaced by an inductor (10) with at least two pole shoes (16) corresponding to the projections (7) on the magnetic piece (6) and allowing magnetic coupling between the inductor (10) and the magnetic piece (6). The inductor (10) and its displacement device (30, 32, 33) are disposed outside the sealed enclosure (1). A control means (38) allows the control shaft (3) to be uncoupled from a member (36, 37) assuring its suspension so as to drop the absorbent unit in the event of emergency shutdown. The apparatus is particularly applicable to control rods of pressurized water nuclear reactors.
REFERENCES:
patent: 2803761 (1956-09-01), Young
patent: 3132290 (1964-05-01), Kumpf
patent: 3162796 (1964-12-01), Schreiber et al.
patent: 3344034 (1967-09-01), Smith
patent: 3721462 (1973-03-01), Pawlitzki
patent: 3940309 (1976-02-01), Imperiali
patent: 4233115 (1980-11-01), Jacquelin
Defaucheux Jacques
Martin Jean
Pasqualini Gilbert
Wiart Albert
Framatome
Schafer Richard E.
Wasil Daniel
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