During the normal operation boron concentrates and spent resins are generated. The boron concentrates are treated by concentrated waste drying system (CWDS) and results in fine powder form. The solidification or application of high integrity container (HIC) is required for the disposal of the dried boron concentrates. The spent resin is stored in storage tank after the water treatment. The spent resin also requires solidification or application of HIC to satisfy the waste acceptance criteria (WAC) in Korea. The solidification process requires periodic validation. The repeated validation and complicated process hesitates the practical application. The application of HIC offers various advantages, including flexible free standing water requirement, higher waste loading compared to solidification, and simple process. The polymer concrete (PC), which is a primary component for PC-HIC exhibits good material stability. The expected transportation mechanism of nuclide in the PC-HIC are 1) diffusion by concentration, 2) permeation by pressure, and 3) capillary suction when considering the disposal condition. Since the PC-HIC effectively prevents the intrusion of neighboring water and volume of free standing water is lower than 1%, it seems that diffusion by concentration is the primary transportation mechanism. In this study, the property of PC is investigated based on Cl ion diffusion test to evaluate the material reliability. The results indicate that PC exhibits superior stability compared to ordinary portland cement. In addition, the reliable life time of PC is estimated base on the element transportation phenomena.

Chronic problems of water treatment membranes are fouling phenomena and membrane damage during the cleaning process. In this study, to solve these problems, a separation membrane in the form of a hollow fiber having excellent physical properties was produced by using the thermally induced phase separation (TIPS). The material used to make the water treatment membrane is poly(vinylidene fluoride) (PVDF). In the evaluation of the properties of the manufactured hollow fiber, citric acid which is an acidic solution and NaCl which is a basic solution were used and experiments of chemical resistance were proceed. In order to confirm the performance of hollow fiber membrane, water flux and tensile strength were measured.