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An investigation has been carried out of aspects of the waste management of spent light water reactor fuel by direct disposal in a deep geological formation on land. The areas covered are: interim dry storage of spent fuel with three options of preconditioning; conditioning o...
Programme: FP1-RADWASTOM 3C
Record Number: 977
Last updated on: 1998-02-02
[RÉSUMÉ DE RAPPORT] Radioactive waste disposal
The aim of the study was to develop backfilling concepts with capabilities to attenuate near field effects of mined repositories in argillaceous host rocks by examining the characteristics and the performances of a clay host rock and potentialy favourable engineered barriers a...
Programme: FP1-RADWASTOM 3C
Record Number: 7953
Last updated on: 1998-02-05
[RÉSUMÉ DE RAPPORT] Radioactive reprocessing waste
The fusion of cladding wastes obtained from the reprocessing of various irradiated fuels is an alternative method to the cementation process used for the conditioning of such wastes. This new process, based on the direct fusion of cladding has been carried out at CEA Marcoule ...
Programme: FP1-RADWASTOM 3C
Record Number: 7118
Last updated on: 1998-03-18
The leaching kinetics of inactive caesium from cylindrical cement specimens containing caesium sulphate was studied at different temperatures and thicknesses. In all cases the square root of time plots were reasonably linear at least initially in accordance with Fick's Law and...
Programme: FP1-RADWASTOM 3C
Record Number: 1118
Last updated on: 1998-03-10
ID: FI1W0143
Date de début: 1987-10-01, Date de fin: 1990-09-30
IN MOST RADIONUCLIDE TRANSPORT MODELS IT IS ASSUMED THAT RADIONUCLIDES MIGRATING IN SOLUTION ALONG FRACTURES WILL DIFFUSE INTO WATER HELD IN PORES WITHIN THE ROCK MATRIX ADJACENT TO FRACTURES, AND WILL THUS BE RETARDED RELATIVE TO THE FLOW OF WATER. THE POSSIBILITY THAT THERE ...
Programme: FP1-RADWASTOM 3C
Record Number: 13974
Last updated on: 1994-01-23
ID: FI1W0163
Date de début: 1987-10-01, Date de fin: 1989-12-31
CHANGES IN THE MECHANICAL BEHAVIOUR OF CLAYS ACCORDING TO THE TEMPERATURE ARE NOT YET WELL KNOWN. IF, FOR THE SHORT TERM BEHAVIOUR STUDIES, ONE CAN ADMIT THAT THERE IS NO DRAINAGE EFFECT AND THAT A TEMPERATURE RISE LEADS, AT THE SHORT TERM, TO A CLAY VOLUME INCREASE, THIS CANN...
Programme: FP1-RADWASTOM 3C
Record Number: 13962
Last updated on: 1994-01-23
ID: FI1W0148
Date de début: 1987-10-01, Date de fin: 1989-03-31
FOR THE EVALUATION OF THE PERFORMANCE OF RADIOACTIVE WASTE GEOLOGICAL STORAGE, THE DESCRIPTION OF HYDRAULIC, THERMAL, CHEMICAL AND MECHANICAL PHENOMENA IS NECESSARY IN THE NEAR FIELD AND IN THE FAR FIELD. THE DIFFICULTY OF THIS DESCRIPTION RESTS, ON ONE HAND IN THE DEFINITION ...
Programme: FP1-RADWASTOM 3C
Record Number: 13967
Last updated on: 1994-01-23
ID: FI1W0129
Date de début: 1987-08-01, Date de fin: 1990-04-30
THE OVERALL AIM OF THE WHOLE JOINT PROJECT IS TO COMPARE, ON THE BASIS OF THE COSTS AND RADIOLOGICAL IMPACT OF THE MANAGEMENT AND DISPOSAL OF ALL THE ASSOCIATED WASTES, REPROCESSING OF PWR FUEL WITH ITS DIRECT DISPOSAL BY EMPLACEMENT IN A DEEP GEOLOGICAL FORMATION ON LAND. FOR...
Programme: FP1-RADWASTOM 3C
Record Number: 13981
Last updated on: 1994-01-23
ID: FI1W0019
Date de début: 1986-05-01, Date de fin: 1989-12-31
AT PRESENT, CLADDING WASTE IS EITHER TEMPORARILY STORED UNDER WATER, OR CONDITIONED BY EMBEDMENT IN CEMENT. AN ALTERNATIVE CONDITIONING METHOD CONSISTS OF PRESS COMPACTION, FOLLOWED BY ENCLOSURE IN A SEAMLESS LEAD CORROSION RESISTANCE OF THE CONDITIONED PRODUCT IN CLAY AS A FI...
Programme: FP1-RADWASTOM 3C
Record Number: 11789
Last updated on: 1994-01-23
ID: FI1W0180
Date de début: 1988-01-01, Date de fin: 1990-06-30
ALTHOUGH THE EFFECTS OF PHYSICAL PARAMETERS (TEMPERATURE, PH, ETC.) ON THE ALTERATION OF NUCLEAR WASTE GLASSES IN PURE WATER HAVE BEEN WIDELY INVESTIGATED, INTERACTIONS BETWEEN THE GLASS AND VARIOUS MATERIALS LIABLE TO BE PRESENT IN A GEOLOGICAL REPOSITORY ARE RELATIVELY LITTL...
Programme: FP1-RADWASTOM 3C
Record Number: 13958
Last updated on: 1994-01-23
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