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RADIOACTIVE WASTES ARISING FROM THE DISMANTLING OF A COMMERCIAL FAST BREEDER REACTOR.

Objective

THE DISMANTLING OF A COMMERCIAL FAST BREEDER REACTOR (1200-1500 MWE POOL TYPE) PRODUCES LARGE QUANTITIES OF RADIOACTIVE WASTE DIFFERING FROM THAT OF A COMMERCIAL LIGHT WATER REACTOR DUE TO NEUTRON ACTIVATION AND SODIUM COOLING. MATERIAL AND RADIOACTIVITY INVENTORIES HAVE BEEN DETERMINED FOR COMMERCIAL LWRS, BUT NOT YET FOR A COMMERCIAL FBR.

THE AIM OF THIS RESEARCH IS THER ESTABLISHMENT OF A DETAILED INVENTORY OF THE RADIOACTIVE WASTE FROM THE DISMANTLING OF A FRENCH FBR (SPX1) WITH PARTICULAR VIEW TO THE 3500 T OF SODIUM AND INCLUDING THE PRIMARY ARGON CIRCUIT, THE SECONDARY ARGON CIRCUIT AS WELL AS THE AUXILIARY SYSTEMS FOR FUEL ELEMENT HANDLING.

B.1. DETAILED INVENTORY OF THE VARIOUS RELEVANT COMPONENTS TO BE DISMANTLED, WITH RESPECT TO A LARGE FAST BREEDER REACTOR (1200-1500 MWE).

B.2. LITERATURE STUDY TO OBTAIN WASTE CLASSIFICATION CRITERIA ACCORDING TO DECONTAMINATION PROCEDURES, CONDITIONING, TRANSPORT AND DISPOSAL.

B.3. ESTABLISHMENT OF A WASTE CLASSIFICATION TABLE TO DETERMINE APPROPRIATE PROCEDURES FOR CONDITIONING, TRANSPORT AND DISPOSAL.

B.4. COLLECTION OF AVAILABLE DATA RELATED TO THE NEUTRON REACTION COEFFICIENT.

B.5. DETERMINATION OF THE ACTIVITY LEVELS OF EACH COMPONENT AND CORRESPONDING CLASSIFICATION, WITH PARTICULAR REGARD TO STELLITE CHARGED PARTS (HIGH COBALT CONTENT). PROPOSAL OF A CUTTING PROGRAMME FOR LARGE COMPONENTS.

B.6. COLLECTION OF AVAILABLE DATA ON RADIOACTIVE CONTAMINATION INSIDE THE REACTOR.

B.7. DETERMINATION OF CONTAMINATION OF EACH COMPONENT AND CORRESPONDING CLASSIFICATION.

B.8. BALANCE OF THE WASTE ACCORDING TO CLASSIFICATION AND CORRESPONDING RANGE OF CONDITIONING OPTIONS.

B.9. EVALUATION OF THE EFFECT OF CONCEPTUAL OPTIONS ON THE WASTE BALANCE,.

B.10. EVALUATION OF SODIUM SPECIFIC CRITERIA FOR CONDITIONING, DECONTAMINATION, TRANSPORT AND STORAGE/REUSE OF COMPONENTS WHICH HAVE WORKED IN SODIUM.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Novatome SA
Address
La Boursière - Rn 186
92350 Le Plessis-robinson
France