Apparatus for the shutdown of a high temperature nuclear reactor

Details Apparatus for the shutdown of a high temperature nuclear reactor Apparatus for the shutdown of a high temperature nuclear reactor

1988-02-11

1990-04-17

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Control component for a fission reactor

Particulate type

376265, G21C 712

Patent

active

049178555

ABSTRACT:
A shutdown system for a high temperature nuclear reactor where absorber material elements in the form of balls pass from an elevated reservoir into a vertical channel formed by aligned vertical cavities in horizontal, nose-shaped projections from the side reflector. The balls are transported back to the reservoir by way of a conveyor device. It must be insured that even in the case of accidents the absorber balls arrive in the cavities and that a rapid return of the absorber balls into the reservoir takes place. For the purpose, the reservoir is provided with an automatically-actuated and controllable device for releasing an opening between the reservoir and the vertical channel feed line. Below the channel is a removal tube terminating in a housing and arranged to form a pile of the absorber balls which seals the removal tube. To return the absorber balls, a metering gas acts on the pile and brings the absorber balls to a carrier gas. The carrier gas returns the absorber balls into the reservoir while the gaseous proporation of the carrier gas flow is returned for the reservoir into the pressure vessel.

REFERENCES:
patent: 3088903 (1963-05-01), Firth
patent: 3136701 (1964-06-01), Sidebottom et al.
patent: 4120753 (1978-10-01), Malaval
patent: 4545954 (1985-10-01), Ullrich et al.
patent: 4664871 (1987-05-01), Schoening
patent: 4789519 (1988-12-01), Schoening et al.
patent: 4798700 (1989-01-01), Elter et al.

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