Test of dissolution of simulated corrosion-oxides in primary loop of the AP1000 reactor.

The AP1000 reactor of China would overhaul for the first time. In order to achieve in-service decontamination of AP1000 primary loop equipment, three simulated corrosion oxides of the AP1000 reactor primary loop were prepared by sedimentation-calcination method, and ultrasonic chemical dissolution test was conducted. The analysis of the characteristics of the simulated oxide showed that the addition of zinc resulted in a different composition of the oxides from that of ordinary PWR, and that is smaller particle size and tighter bonding. Suitable decontaminants and decontamination processes were identified by the dissolution laws of the simulated oxides in the experiment. [ABSTRACT FROM AUTHOR]