Primary Water Chemistry and High Temperature Filtration System Experience at Temelin WWER-1000 NPP

摘要

This paper contains a summary of the water chemistry utilized at the Temelm Nuclear Power Plant from the start of its operation, with a focus on the high temperature filtration (HTF) units. It contains the results of the monitoring of the radiation situation in the main system components with the help of in-situ gamma spectrometry and the measurement of radioactivity of corrosion products in the coolant and on the surface. A positive effect of HTF has been observed during the early cycles of equipped reactor units. This paper deals with the issue of the behaviour of HTF and its effect on the entire primary circuit. An analysis of an HTF system is performed in this paper. Operation experience from the Temelfn Nuclear Power Plant and other WWER (water-water energetic reactor, a Russian nuclear power reactor of pressurized water reactor type) units is compared.