[en] Water chemistry is an important parameter for deciding radiation levels in operating areas of a nuclear power plant. Clean-up deminilisers at TAPS 1 and 2, containing mixed bed resins are used to remove soluble and insoluble impurities from reactor water. The clean-up deminilisers bed is in continuous service for one complete cycle of reactor operation. At the end of cycle when the bed is depleted, the resins are highly radioactive. Till now, depleted resins are transferred to Spent Resin Storage Tank (SPERT) for interim storage