Journal of Nuclear Fuel Cycle and Waste Technology

PFC(Perfluorocarbon) decontamination process is one of best methods to remove hot particulate adhered at inside surface of hot cell and surface of equipment in hot cell. It was necessary to develop a particulate filtration equipment to reuse PFC solution used on PFC decontamination due to its high cost and to minimize the volume of second wastewater. Contamination characteristics of hot particulate were investigated and then a filtration process was presented to remove hot particulate in PFC solution generated through PFC decontamination process. The removal efficiency of PVDF(Poly vinylidene fluoride), PP(Polypropylene), Ceramic(Al2O3) filter showed more than 95%. The removal efficiency of PVDF filter was a little lower than those of other filters at same pressure(3 psi). A ceramic filter showed a higher removal efficiency with other filters, while a little lower flux rate than other filters. Due to inorganic composition, a ceramic filter was highly stable against radionuclides in comparison with PVDF and PP membrane, which generate H2 gas in -radioactivity atmosphere. Therefore, the adoption of ceramic filter is estimated to be suitable for the real filtration process.

Keywords

PFC,hot particulate,removal efficiency,flux,ceramic(Al203) membrane