(57) Radioactive wastes from a nuclear reactor plant are dried into powder and compacted
into pellets. The resultant pellets are conveyed to a sealed vessel (54) by a belt
conveyor system (48, 50, 52). To control the spacing of the pellets on the belt conveyors
and thereby control the radioactive dose around the belt conveyors, two vibratory
feeders (42, 44) are arranged in series and operated so that the rate of loading of
the pellets onto the belt conveyors is always kept lower than a predetermined level.
By the use of the vibratory feeders, adhesion of radioactive powder removed from the
pellets onto the belt conveyors is also prevented.
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