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ECONOMIC COMPARISON OF DECONTAMINATION AND DIRECT MELTING WITH A VIEW TO RECYCLING SCRAP

Objective

THE DECOMMISSIONING OF NUCLEAR FACILITIES EITHER REQUIRES THE FINAL DISPOSAL OF LARGE QUANTITIES OF CONTAMINATED SCRAP METAL OR THE DECONTAMINATION TO A DEGREE WHICH ALLOWS ITS FURTHER USE IN NUCLEAR OR OTHER AREAS.
DECONTAMINATION TECHNOLOGY IS WELL DEVELOPED AND IN MOST CASES BASED ON THE APPLICATION OF HIGHLY CORROSIVE AGENTS OR ELECTROCHEMICAL PROCESSES. RECENTLY, DIRECT MELTING HAS BEEN ADDED TO THESE PROCEDURES AS IT ALLOWS FOR THE SEPARATION OF CS AND SR FROM THE BASE MATERIAL. HOWEVER, THE VOLATILE CONTAMINATION AGENTS HAVE TO BE RETAINED BY APPROPRIATE FILTER SYSTEMS.
THE OBJECTIVE OF THIS WORK IS TO CARRY OUT AN ECONOMIC STUDY OF DECONTAMINATION, DIRECT MELTING AND SUPER-COMPACTION, WITH A VIEW TO RECYCLING OF SCRAP, IN ORDER TO ESTABLISH A STATE-OF-THE-ART COST STRUCTURE FOR THE DECOMMISSIONING OF NUCLEAR INSTALLATIONS. THIS ECONOMIC COMPARISON IS BASED ON ACTUAL CLEAN-UP OR DECOMMISSIONING WORK EXECUTED BY THE CONTRACTOR UNDER INDUSTRIAL CONDITIONS.
THIS STUDY TAKES INTO ACCOUNT THE NUCLEAR INSTALLATIONS IN GERMANY.

1. REVIEW STUDIES
1.1. INVENTORY OF CONTAMINATED METAL SCRAP UNTIL 1994.
1.2. REVIEW OF EXISTING DECONTAMINATION METHODS.
1.3. REVIEW OF LICENSING CONDITIONS FOR RECYCLING OF DECONTAMINATED METAL SCRAP.
2. ASSESSMENT OF THE INVESTMENT AND RUNNING COST OF THE THREE FOLLOWING PROCEDURES:
- DECONTAMINATION OF SCRAP METAL FOLLOWED BY MELTING AND RELEASE,
- DIRECT MELTING OF SCRAP METAL, FOLLOWED BY RELEASE,
- SUPER-COMPACTION FOLLOWED BY DISPOSAL AS RADIOACTIVE WASTE.

Topic(s)

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Call for proposal

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Coordinator

Gesellschaft für Nuklear-Service mbH
EU contribution
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Address
Goethestraße 88
45130 Essen
Germany

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