Abstract

One goal of the EPICOR-II Research and Disposition Program is to investigate methods of immobilizing ion exchange resin wastes by solidification. Formulations were developed for the solidification of EPICOR-II prefilter wastes from Three Mile Island Unit-2 using Portland type I-II cement and vinyl ester-styrene. In developing formulations, ion exchange resins and zeolite simulating those in EPICOR-II prefilters were used. Once suitable formulations were defined, radioactive wastes from EPICOR-II prefilters PF-7 (organic ion exchange resins) and PF-24 (organic ion exchange resins with zeolite) were solidified. A total of 267 radioactive waste form specimens were prepared in hot cell solidification operations. That total includes 136 Portland cement specimens (72 incorporating prefilter PF-7 waste and 64 with prefilter PF-24 waste) and 131 vinyl ester-styrene specimens (71 incorporating prefilter PF-7 waste and 60 with prefilter PF-24 waste). The methodologies used and products produced are described and evaluated in this report.

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