Some features of water treatment for the main and auxiliary systems in primary loop of pressrized-water reactor nuclear power plant and special requirements for nuclear grade resin have been briefly presented. At the same time

through situation of using home-made new generation nuclear grade resin of trademark “Zhengguang” in main and auxiliary systems for the primary loop of Qinshan Nuclear Power Plant

it is believed that the said resin can completely satisfy the requirements of Qinshan Nuclear Power Plant

and the performance is superior to that of the original home-made nuclear grade resin.