EXCHANGE MANAGEMENT METHOD OF ION-EXCHANGE RESIN IN NUCLEAR POWER PLANT CONDENSATE DEMINERALIZER

摘要

PPROBLEM TO BE SOLVED: To provide a method of managing ion-exchange resin used for a condensate demineralizer in order to keep the water quality of the nuclear reactor and the steam generator of a nuclear power plant to be at high purity. PSOLUTION: A certain quantity of cation-exchange resin having sulfonic acid group is sampled from the condensate demineralizer of the nuclear power plant, and is dipped in hot water for a predetermined time, and then average molecular weight of polystyrene sulfonic acid eluting in the hot water is measured by gel permeation chromatography. When the average molecular weight of polystyrene sulfonic acid is a threshold or more, the cation-exchange resin is exchanged. PCOPYRIGHT: (C)2009,JPO&INPIT