Apparatus for automatically starting the drop of an absorbing me

Details Apparatus for automatically starting the drop of an absorbing me Apparatus for automatically starting the drop of an absorbing me

1986-11-20

1988-07-26

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Control component for a fission reactor

Fuse actuated devices

376233, 403 32, 403 31, 294906, 294 8615, 294 93, G21C 712

Patent

active

047599030

ABSTRACT:
In order to automatically initiate without any intermediate instrumentation chain the drop of absorbing members into the core of a nuclear reactor, in the of a drop in the cooling liquid level to below a given threshold and, optionally, a rise in the pressure to beyond a maximum permitted value, between each absorbing member and the bar supporting said member is provided an apparatus, which comprises tongs formed by at least two fingers, said tongs normally being locked in a gripping position by locking members, such as balls. A float mounted in the bar controls the unlocking of the tongs in either of the two conditions requiring the dropping of the absorbing members.

REFERENCES:
patent: 3609825 (1971-10-01), Pullos
patent: 3733251 (1973-05-01), Gilbertson et al.
patent: 3782838 (1974-01-01), Tiraspolsky et al.
patent: 4167443 (1979-09-01), Noyes et al.
patent: 4411857 (1983-10-01), Sridhar

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