A new ion exchange resin with minimized production of leachables in nuclear power plants

摘要

A new ion exchange resin, featuring high crosslinkage and uniform particle size distribution, has been developed and tested for use in nuclear power plants. Simulation test results proved that this resin significantly minimizes the generation of sulfate ion deriving from leachables in condensate demineralizers, i.e. as compared with conventional such resins. It was also found that leachables from this resin had a significantly low molecular weight distribution, thus having minimized affect on anion resin kinetics. Although high crosslinkage resins are regarded as inferior in terms of kinetics and regeneration efficiency, it was found that there was no particular problem in using the newly developed resin in nuclear power plants. This resin is expected to become the solution for minimizing the generation of sulfate ions and keeping the feed water clean in nuclear power plants.