IMMOBILISATION OF CLADDING WASTE BY PRESS COMPACTION AND CONDITIONING FOR FINAL DISPOSAL BY ENCAPSULATION IN A LEAD CONTAINMENT.

Información del proyecto

Identificador del acuerdo de subvención: FI1W0019

Proyecto cerrado

Fecha de inicio 1 Mayo 1986

Fecha de finalización 31 Diciembre 1989

Financiado con arreglo a

• Research and development programme (Euratom) on the management and storage of radioactive waste, 1985-1989

Coste total

Sin datos

Aportación de la UE

Sin datos

Coordinado por

BELGIAN NUCLEAR RESEARCH CENTRE
Belgium

Objetivo

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 FINAL DISPOSAL INACTIVE CONDITIONS, IN A SIMULATED HOT CELL/1/.

THE MAIN AIMS OF THE ACTUAL PROJECT ARE :

- THE FURTHER DEVELOPMENT OF THE PRESS COMPACTION TECHNOLOGY ON PILOT SCALE;
- THE ACTIVE DEMONSTRATION ON PILOT SCALE OF THE CONDITIONING TECHNIQUE WITH REPRESENTATIVE CLADDING WASTE.;
- THE EVALUATION OF THE CHARACTERISTICS OF THE PRODUCTS OBTAINED, IN VIEW OF THEIR FINAL DISPOSAL.

THE WORK IS CARRIED OUT IN CLOSE COLLABORATION WITH KFK-GERMANY, WHERE THE PRESS COMPACTION TECHNIQUE WILL BE DEVELOPED ON THE INDUSTRIAL SCALE.
The research programme proposes an alternative conditioning method for cladding waste. This method is based on cold press compaction of the hulls to about 80% of the theoretical density of zircalloy. The final conditioning consists of encapsulation of the compaction products in a corrosion resistant container. As clay is used as the final disposal medium for this kind of waste, seamless lead containment has been chosen as the corrosion barrier.
The press compaction technology was further developed at pilot scale under nonradioactive conditions. The influence of the chop length, of the addition of softer materials (lead or aluminium) and of variations in the compaction procedure was examined. Further, the hot cell infrastructure was finished and the equipment for a hot demonstration with 100 kg active hulls was installed and tested. A welding unit for the triple containment vessel, comprising stainless steel, lead and stainless steel, has been adapted for hot cell conditions and the welding parameters set up. Finally, all the operations in the cell were reviewed and checked in simulated active conditions.
B1. FURTHER DEVELOPMENT OF PRESS COMPACTION TECHNOLOGY UNDER INACTIVE CONDITIONS.
B2. EQUIPMENT OF A HOT CELL FACILITY FOR PRESS COMPACTION AND CONDITIONING OF RADIOACTIVE CLADDING HULLS.

Ámbito científico (EuroSciVoc)

• ciencias naturales › ciencias químicas › química inorgánica › metales de postransición

Programa(s)

• FP1-RADWASTOM 3C - Research and development programme (Euratom) on the management and storage of radioactive waste, 1985-1989

Tema(s)

Datos no disponibles

Convocatoria de propuestas

Datos no disponibles

Régimen de financiación

CSC - Cost-sharing contracts

Coordinador

BELGIAN NUCLEAR RESEARCH CENTRE

• Aportación de la UE: Sin datos
• Dirección: 200,Herrmann Debrouxlaan 40-42 ; 1160 BRUXELLES ; Bélgica
• Coste total: Sin datos

Participantes (1)

Forschungszentrum Karlsruhe Technik und Umwelt GmbH

Alemania

• Aportación de la UE: Sin datos
• Dirección: 76021 Karlsruhe
• Coste total: Sin datos