Published May 1971 | Version v1
Miscellaneous Open

Contribution to the study of the pot vitrification of residual solutions of fission products from the treatment of Sicral type fuel

Creators

Description

The object of this study is the vitrification in pot of the residual solutions of the fission products originating from a treatment of Sicral fuel irradiated in EDF's graphite-gas reactors. The pot vitrification process, a discontinuous process, consists in supplying an induction-heated pot with nitric waste solutions and an adjuvant providing the additional elements to make a glass. The process involves an evaporation stage, then a drying and denitrification stage, and finally a glass refining (and pouring) stage. In the first part, the radioelements contained in the solution are calculated and the products due to the process are fixed. In a second part, the glass main characteristics are measured and the dimensions of the apparatus are determined

Abstract (French)

Cette etude a pour objet la vitrification en pot des solutions residuaires des produits de fission provenant d'un traitement de combustible Sicra irradie dans les reacteurs du type graphite-gaz de l'EDF. Le procede de vitrification en pot, procede discontinu, consiste a alimenter un pot chauffe par induction avec les solutions residuaires nitriques et un adjuvant apportant les elements complementaires pour realiser un verre. Durant l'alimentation, on evapore, puis on seche et denitrifie, enfin on procede a l'affinage du verre, enfin a sa coulee. Dans la premiere partie, on calcule les radioelements contenus dans la solution et on fixe les produits dus au procede. On conclut a la necessite d'etudier deux cas: 1 an ou 2 ans apres la sortie du reacteur. Dans une deuxieme partie, on recherche par des essais de synthese en laboratoire des compositions de verre et l'on en mesure les caracteristiques principales. Enfin, on determine les dimensions de l'appareillage pour les deux traitements en vue d'un choix. (auteur)

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Additional details

Additional titles

Original title (French)
Contribution a l'etude de la vitrification en pot des solutions residuaires de produits de fission en provenance du traitement de combustible de type Sicral

Publishing Information

Imprint Pagination
112 p.
Report number
FRCEA-TH--12479

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
52011250
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Thesis
Descriptors DEI
CHEMICAL COMPOSITION; DEMONSTRATION PLANTS; DENITRIFICATION; DRYING; ELECTRICITE DE FRANCE; EVAPORATION; GCR TYPE REACTORS; GLASS; PROCESS DEVELOPMENT UNITS; RADIOACTIVE WASTE PROCESSING; RADIOACTIVE WASTES; SIZE; SPENT FUELS; VITRIFICATION
Descriptors DEC
CHEMICAL REACTIONS; ENERGY SOURCES; FRENCH ORGANIZATIONS; FUELS; FUNCTIONAL MODELS; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; MANAGEMENT; MATERIALS; NATIONAL ORGANIZATIONS; NUCLEAR FUELS; PHASE TRANSFORMATIONS; PROCESSING; RADIOACTIVE MATERIALS; RADIOACTIVE WASTE MANAGEMENT; REACTOR MATERIALS; REACTORS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES

Optional Information

Notes
31 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses