A waste-minimized chemical decontamination process for the decontamination of a nuclear reactor coolant system

The SP-HyBRID process, which has a similar performance to commercial technologies for the decontamination of a nuclear reactor coolant system, can reduce the secondary waste generation significantly. However, the process has a problem of discharging decontamination wastewater every cycle. In this study, an improved SP-HyBRID process that can conduct the process cycles continuously without discharging decontamination wastewater every cycle was designed. It was confirmed that the improved process could be effectively applied to equipment for a decontaminating test of contaminated components, and the waste reduction can be close to 15% when compared with the existing SP-HyBRID process. (author)