METHOD FOR RECOVERING IRRADIATED NUCLEAR FUEL

FIELD: recovering solid irradiated nuclear fuels. ^ SUBSTANCE: proposed method for recovering solid irradiated nuclear fuel in the form of various uranium-containing composites (metal, carbide, oxide, and the like) for its further reuse in nuclear-fuel cycle includes dispersion of mentioned composit...

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Bibliographische Detailangaben
Hauptverfasser:	FEDIK IVAN IVANOVICH, PIROGOV ALEKSANDR ALEKSANDROVICH, MIREEV TIMUR ALDANOVICH, DENISKIN VALENTIN PETROVICH, ALEKSEEV SERGEJ VLADIMIROVICH, ANISIMOV ANDREJ BORISOVICH, MIZIN PAVEL PETROVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	FIELD: recovering solid irradiated nuclear fuels. ^ SUBSTANCE: proposed method for recovering solid irradiated nuclear fuel in the form of various uranium-containing composites (metal, carbide, oxide, and the like) for its further reuse in nuclear-fuel cycle includes dispersion of mentioned composites by way of thermal oxidation followed by vacuum baking at the same time distilling in vacuum volatile products of fission, such as cesium-137. Dispersion is conducted in controlled oxygen-containing medium while cycling them at temperatures ranging between 400 and 1000 °C; baking is conducted for 1 h at residual pressure of maximum 10-2 Pa and temperature of minimum 1300 °C. ^ EFFECT: ability of reducing gamma-activity of irradiated nuclear fuel, mainly cesium, to desired level for its reuse in nuclear fuel cycle. ^ 5 cl, 1 tbl, 3 ex