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1Department of Nuclear Engineering, Korea
2KORASOL, Korea
2KITECH, Korea
*Corresponding author: Sung-Joon Pak, Department of Nuclear Engineering, Hanyang University, Seoul, South Korea
Submission: May 12, 2022; Published: June 17, 2022
ISSN : 2578-0255Volume9 Issue3
This study explains how to reduce the volume of radioactive wastes on the wires generated during the decommissioning process of nuclear facilities. The method involves spraying pressure treatment process to separate the aggregates from the wire; the latter of which contain the majority of the radioactive contaminants. The process acted to weaken the chemical bond between the wire and aggregate components on the wire. Optimal treatment conditions were determined to be as follows: pre-treatment for 1sec using round nozzle followed by flat nozzle horizontal to the wire for 1.5sec at room temperature. Such conditions were found to be effective at reducing the volume of the waste but could not remove the contaminants from the aggregates completely. Applying the additional process to remove the contaminants using dry ice, the clearance criteria could be attained for the aggregates separated. Therefore, the radioactive waste could be treated for clearance by the sequential treatment process, thus achieving an approximately 85% volume reduction of the radioactive waste and ultimately lowering the cost of decommissioning and waste disposal.
Keywords: Decommissioning waste; Pressure treatment; Separation efficiency; Wire
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