Published December 30, 1976
| Version v1
Patent
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Oxidic nuclear fuel or fertile material for fuel and/or breeder subassemblies
Description
The invention deals with an oxidic nuclear fuel for reactor fuel and/or fertile elements consisting of a graphite matrix in which spherical fuel particles, coated with gas-impermeable pyrocarbon, are embedded. According to the invention, the latter contain up to 10 atom percent metal oxides with a low neutron capture cross section (e.g. Al2O3, niobium oxide), finely dispersed. These metal oxides serve to bind solid fission products inside the spheres in the form of complex metal oxides. An examplary arrangement for UO2 fuel is described. (UWI)
Availability note (English)
MF available from INIS under the Report Number; Available from Dt. Patentamt, Muenchen (FRG).Abstract (German)
Die Erfindung betrifft einen oxidischen Kernbrennstoff fuer Brenn- oder Brutelemente in Kernreaktoren, die aus einer Graphitmatrix bestehen, in welche kugelfoermige mit gasdurchlaessigem Pyrokohlenstoff beschichtete Brennstoffteilchen eingebettet sind. Erfindungsgemaess enthalten letztere bis zu 10 Atomprozent Metalloxide mit niedrigem Neutroneneinfangquerschnitt (z.B. Al2O3, Niobiumoxid) in fein verteilter Form. Diese Metalloxide sollen beim Spaltprozess entstehende feste Spaltprodukte innerhalb der Kuegelchen als komplexe Metalloxide binden. Ein Ausfuehrungsbeispiel fuer UO2-Brennstoff wird beschrieben. (UWI)Files
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Additional details
Additional titles
- Original title (German)
- Oxidischer Kernbrenn- oder Kernbrutstoff fuer Brenn- und/oder Brutelemente
Publishing Information
- Imprint Pagination
- 3 p.
- IPC:
- Int. Cl. C04B 35/51.
- IPC
- Int. Cl. C04B 35/51.
- Patent number
- DE patent document 2063720/C/
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 8338281
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- ADDITIVES; ALUMINIUM OXIDES; CHEMISORPTION; COATED FUEL PARTICLES; FISSION PRODUCTS; GRAPHITE; NIOBIUM OXIDES; PRODUCTION; PYROLYTIC CARBON; THORIUM OXIDES; URANIUM OXIDES
- Descriptors DEC
- ACTINIDE COMPOUNDS; ALUMINIUM COMPOUNDS; CARBON; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; FUEL PARTICLES; ISOTOPES; NIOBIUM COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; RADIOACTIVE MATERIALS; SEPARATION PROCESSES; THORIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; URANIUM COMPOUNDS