Experimental modelling of mass transfer of boric acid with steam at parameters characteristic for VVER reactors in emergency mode

Abstract

Abstract The paper presents experimental data obtained during the study of the mass transfer of boric acid with steam at a pressure of 0.1-0.3 MPa in the concentration range of 16-440 gkg−1 H2O. The volatility of boric acid in a range of parameters typical for a possible emergency at the VVER nuclear power plants (NPPs) was studied using the test facility. As a result, new experimental data on the change in the concentration of boric acid in steam during its boiling were obtained. The range of applicability of the dependence for determining the distribution coefficient of H3BO3 between the steam and the boiling coolant has been expanded.