2012:02 Evaluation of activity build-up experiments

This project aims to understand how the water chemistry affects the activity build-up on surfaces in different systems in Swedish nuclear power plants, which in turn provides information on conditions required to reduce the radiation exposure to power plant staff. The study was done to obtain knowledge about water chemistry conditions preferred to minimize the activity build-up.

A number of experiments have previously been performed at Studsvik Nuclear AB. The effects on the activity build-up from iron, nickel and zinc ions were studied. The metal oxides formed were also studied with high-resolution microscopy to provide further information on the progress of activity build-up.

The goal of this project was to assess the hitherto performed experiments to obtain a deeper understanding of the activity build-up. This was done through evaluation of how different parameters affect the activity build-up in the performed experiments.