Water chemistry of nuclear power plant

An analysis and evaluation were made on the data connected with secondary water chemistry at Kori no. 1 power plant from Jan. to Sep. 1979. All water control parameters were satisfied with the value recommended by Westinghouse. But judging from the frequent inleakages of sea water through condenser and sludge composition, there are some possibilities that denting at Kori no. 1 power plant would increase. It seems that boric acid soaking and injection into steam generator are effective to arrest denting, but potential adverse effects on the boric acid treatment should be evaluated. It is also important to consider, as a corrective action for denting, installing polishing plant, retubing the present condenser with titanium, and performing chemical cleaning and periodical water soaking. The eddy current testing results, obtained in No. 1979, showed that the denting was greatly reduced in comparison with 1978's. (author)