Compositions – Radioactive compositions – Nuclear reactor fuel
Patent
1987-06-09
1989-05-30
Locker, Howard J.
Compositions
Radioactive compositions
Nuclear reactor fuel
100 41, 100 93R, 159 473, 159DIG12, 2505061, 252628, 252632, 2641761, 26421112, 2642112, 425DIG16, 425DIG243, G21F 912, G21F 924
Patent
active
048349143
ABSTRACT:
Dry, compactable radioactive waste material having a low specific activity and comprised approximately of eighty-five percent plastic material and fifteen percent non-plastic material is shredded and granulated. The granulated material is supplied under heat and pressure to an extruder which will extrude the waste material in plasticized form into a drum for disposal. Radioactive ion exchange resin beads may also be dewatered and mixed in predetermined amounts with the dry granulated material for encapsulation within the plasticized waste for disposal. The plasticized waste material, with or without the resin, is horizontally extruded into a horizontally disposed drum between a compacting disk secured to the extruder barrel and the bottom of the drum. Controlled pressure is applied against the bottom of the drum whereby the plasticized material will completely fill the space between the disk and the bottom of the drum and gradually push the drum bottom away from the sik as the drum is filled.
REFERENCES:
patent: 4242220 (1980-12-01), Sato
patent: 4280922 (1981-07-01), Puthawala et al.
patent: 4460499 (1984-07-01), Boden
patent: 4661290 (1987-04-01), Sauda et al.
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