Arrangement for measuring the radioactivity of mineral load on an extraction machine, for instance a shovel dredger.

摘要

The invention relates to a device for measuring radioactivity on machines for the extraction of radioactive ore having at least one movable vessel (18) capable of containing a load of ore. According to the invention, it comprises a rod (120) articulated on the machine at its upper end by means of a connection oscillating in at least a vertical plane and having at its lower end a radioactive radiation detector (122) covering a specific solid angle, and displacement means for bringing the rod and vessel in a reproducible manner into such a mutual position that the load of ore contained in the vessel occupies a substantial part of the solid angle of the detector.
<??>Preferably, an arm (110) is provided between the rod and the machine.
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