Monitoring and control of the oxygen content in heavy liquid metal coolants for anticorrosion protection of steels

The results of research and development in the field of monitoring and control of oxygen content (thermodynamic activity) in heavy liquid metal coolants $(\rm Pb$, $\rm Pb$–$\rm Bi)$ are presented. The properties of lead and eutectics $44.5\%\,\rm Pb$–$55.5\%\,\rm Bi$ defining the specific features of their application as coolants in nuclear power plants are considered. Data on oxygen solubility in lead and lead–bismuth melts and the empirical dependences for calculation of the kinetic characteristics of lead oxide dissolution are given. Methods and devices for monitoring and control of the oxygen content (thermodynamic activity) in heavy coolants are considered.