Recycling of radioactively contaminated scrap from the nuclear cycle and spin-off for other application
DOI:
https://doi.org/10.3989/revmetalm.2005.v41.iExtra.980Keywords:
Radioactively contaminated scrap, Decontamination by melting, NORM, Casks for radioactive transportsAbstract
In the 1980ies, Siempelkamp foundry in Krefeld, Germany, developed a process to melt medium and slightly radioactive metals from decommissioning and maintenance works in nuclear power plants. Since 1989, in the CARLA melting plant which is licensed according to the German radiation protection ordinance (StrlSchV), metals are being molten which, for the largest part, can be reused. Since 1998, in a second plant, the GERTA melting plant, metals with a content of mercury up to 1 weight %, natural radioactivity up to 500 Bq/g and other chemical contaminations are being molten and completely decontaminated, so that these metals can be reused in the steel cycle. The following text is describing the melting process, acceptance criteria for contaminated scrap and recycling paths for the produced ingots and slags.
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