System for discriminating radiation-contaminated fragments and a

Details System for discriminating radiation-contaminated fragments and a System for discriminating radiation-contaminated fragments and a

1989-12-19

1991-12-31

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

With automatic control

209576, 209589, 209655, 2411012, 241DIG38, B02C 442

Patent

active

050765027

ABSTRACT:
A system for discriminating radiation-contaminated fragments on the basis of a predetermined radioactive concentration includes a detection device for detecting the radiation of the fragments, the detection device having a generally vertically-extending path of transfer of the fragments, at least one radiation detector disposed at one of the inside and outside of asid transfer path, and a transfer device for sequentially transferring the fragments in the transfer path; a convey device for conveying the fragments to said detection device; and a controller for determining the radioactive concentration of the fragments in accordance with the radiation detected by the detection device and for judging whether or not the radioactive concentration of the fragments is the predetermined radioactive concentration. The controller is also operable to control the transfer device so as to adjust the speed of transfer of the fragments in the transfer path. The system further includes a density detecting device for detecting the density of the fragments to be conveyed to the detection device. The controller corrects the above determined radioactive concentration by the density detected by the density detecting device.

REFERENCES:
patent: 4361238 (1982-11-01), Kealy et al.
patent: 4363722 (1982-12-01), Dresty et al.
patent: 4591716 (1986-05-01), Kitaguchi et al.
patent: 4646978 (1987-03-01), Johnson et al.
patent: 4679738 (1987-07-01), Prisco et al.
Japan Atomic Energy Assocation Journal, vol. 29, No. 11, 1987, p. 60.

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