Published 1967 | Version v1
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Irradiation behaviour of mixed uranium-plutonium carbides, nitrides and carbonitrides

Creators

  • 1. Commissariat a l'Energie Atomique, Fontenay-aux-Roses (France). Centre d'Etudes Nucleaires

Description

In the framework of the research program of fast reactor fuels two irradiation experiments have been carried out on mixed uranium-plutonium carbides, nitrides and carbo-nitrides. In the first experiment carried out with thermal neutrons, the fuel consisted of sintered pellets sheathed in a stainless steel can with a small gap filled with helium. There were three mixed mono-carbide samples and the maximum linear power was 715 W/cm. After a burn-up slightly lower than 20000 MW day/tonne, a swelling of the fuel which had ruptured the cans was observed. In the second experiment carried out in the BR2 reactor with epithermal neutrons, the samples consisted of sintered pellets sodium bonded in a stainless steel tube. There were three samples containing different fuels and the linear power varies between 1130 and 1820 W/cm. Post-irradiation examination after a maximal burn-up of 1550 MW day/tonne showed that the behaviour of the three fuel elements was satisfactory. (authors)

Availability note (English)

Available from INIS in electronic form

Abstract (French)

Dans le cadre du programme d'etude des conibustiles pour reacteurs rapides, on a realise deux experiences d'irradiation de carbures, nitrures et carbonitrures mixtes d'uranium et de plutonium. Dans la premiere experience, faite en neutrons thermiques, le combustible etait constitue de,pastilles frittees gainees dans un tube d'acier inoxydable avec un faible jeu rempli d'helium. Il y avait trois echantillons de monocarbures mixtes, et la puissance lineaire maximale etait de 715 W/cm. Apres un taux de combustion legerement inferieur a 20 000 MWj/t, on a observe un gonflement des combustible qui a provoque, la rupture des gaines. Pans la seconde experience, realisee dans le reacteur BR2 en neutrons epithermiques, les echantillons etaient constitues de pastilles frittees gainees dans un tube d'acier avec un joint sodium. Il y avait trois echantillons contenant des combustibles differents, et la puissance lineaire variait de 1130 a 1820 W/cm. Les examens apres irradiation a un taux maximal de 1550MWj/t, mettent en evidence un comportement satisfaisant des trois elements combustibles. (auteurs)

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Additional details

Additional titles

Original title (French)
Comportement a l'irradiation de carbures, nitrures et carbonitrures mixtes d'uranium et de plutonium

Publishing Information

Imprint Pagination
58 p.
Report number
CEA-R--3223

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
37017839
Subject category
S36: MATERIALS SCIENCE; S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
CARBON NITRIDES; EPITHERMAL NEUTRONS; FUEL PINS; IRRADIATION PROCEDURES; MICROHARDNESS; MICROSTRUCTURE; MIXED CARBIDE FUELS; MIXED NITRIDE FUELS; PLUTONIUM COMPOUNDS; TEMPERATURE DEPENDENCE; THERMAL CONDUCTIVITY; THERMAL NEUTRONS; URANIUM COMPOUNDS
Descriptors DEC
ACTINIDE COMPOUNDS; BARYONS; CARBON COMPOUNDS; ELEMENTARY PARTICLES; ENERGY SOURCES; FERMIONS; FUEL ELEMENTS; FUELS; HADRONS; HARDNESS; MATERIALS; MECHANICAL PROPERTIES; NEUTRONS; NITRIDES; NITROGEN COMPOUNDS; NUCLEAR FUELS; NUCLEONS; PHYSICAL PROPERTIES; PNICTIDES; REACTOR COMPONENTS; REACTOR MATERIALS; SOLID FUELS; THERMODYNAMIC PROPERTIES; TRANSURANIUM COMPOUNDS

Optional Information

Notes
22 refs.