Flexible condensate polishing operation at Koeberg nuclear power station

The condensate polishing plants at Koeberg nuclear power station have been modified to permit greater operational flexibility. The modifications, described in this paper, allow the resin beds to be continuously conditioned while on bypass and returned to full flow service within 1 minute. They also allow steam generator blowdown flow to be reduced to less than 0.5% feedwater flow without noticeably adversely impacting the steam generator chemistry.