Published June 29, 1984
| Version v1
Patent
Process for conditioning wastes made of radioactive metallic particulates such as dissolution residues of spent fuel elements
Description
Radioactive particulates are put in suspension in a liquid and the suspension evaporated by injection in a rotating heated horizontal tube. The tube contains a bed of alloy or metal powder, for instance copper or stainless steel. The dry mixture obtained after this heat treatment is melted at the temperature required for forming defined compounds between the metal of the powder and metallic constituants of radioactive particulates for instance spent fuel dissolution residues or dust from spent fuel cutting or mechanical decladding
Availability note (English)
Available from Institut National de la Propriete Industrielle, Paris (France).Abstract (French)
On met les particules radioactives en suspension dans un liquide, puis on soumet la suspension a un traitement thermique d'evaporation realise en injectant cette suspension dans un tube sensiblement horizontal chauffe et entraine en rotation autour de son axe, qui contient un lit d'une poudre de metal ou d'alliage, par exemple de cuivre ou d'acier inoxydable; on soumet ensuite le melange sec de poudre et de particules metalliques radioactives obtenu apres ce traitement thermique a une fusion dans l'installation a une temperature suffisante pour fondre la poudre de metal ou d'alliage et former des composes definis entre le metal de la poudre et les constituants metalliques des particules radioactivesAdditional details
Additional titles
- Original title (French)
- Procede de conditionnement de dechets constitues par des particules metalliques radioactives telles que les fines de dissolution des elements combustibles irradies
Publishing Information
- Imprint Pagination
- 21 p.
- IPC:
- Int. Cl. G21f9/30.
- IPC
- Int. Cl. G21f9/30.
- Patent number
- FR patent document 2538603/A/
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 17019917
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- ALLOYS; DUSTS; ENCAPSULATION; METALS; RADIOACTIVE WASTE PROCESSING; RADIOACTIVE WASTES; RESIDUES
- Descriptors DEC
- ELEMENTS; MANAGEMENT; MATERIALS; RADIOACTIVE MATERIALS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES
Optional Information
- Secondary number(s)
- FR patent application 8221665.