Development of the technique for determination the rate of oxidation of structural steels in heavy liquid metal coolants

Abstract

И з в е с т и я в у з о в • Я д е р н а я э н е р г е т и к а • № 4 • 2 0 1 7 127

Basic models and approximation for the engineering description of the kinetics of the oxide layer of steel in a flow of heavy liquid metal coolant under various oxygen conditions

“…The experiments on oxygen consumption (Askhadullin et al 2011; Ivanov et al 2017;Salaev et al 2018) make it possible to relatively accurately determine only the parameters of the dependence on temperature and partial pressure (37b). Therefore, the absolute values of the parabolic constant can be determined only by reference experiments.…”

“…Such experiments were carried out at JSC "SSC RF-IPPE" (Askhadullin et al 2011), where a technique was developed that made it possible to estimate the flows of oxygen consumed for the oxidation of the steel surface under variations in temperature and oxygen conditions of the coolant. There is a matrix of various experimental values of the flow of oxygen consumed for steel oxidation, and the temperature and partial pressure of oxygen in the coolant (Askhadullin et al 2011;Ivanov et al 2017).…”

“…Based on the available experimental data (Askhadullin et al 2011;Ivanov et al 2017), the following dependence was proposed for EP-832 steel:…”

“…Kinetics of corrosion processes of steel components in HLMC is determined by the associated processes of hydrodynamics and the interaction of dissolved components, primarily such as oxygen and iron. The justification and appropriate modeling of these processes is an important component for substantiating heavy liquid metal coolant technology (Robertson et al 1988;Fazio et al 2001;Aiello et al 2004;Ivanov et al 2005Ivanov et al , 2017Zhang et al , 2007Lim et al 2010;Martinelli et al 2008a;Weisenburger 2008;Schroer and Konys 2009;Steiner 2009;Hwang and Lim 2010;Askhadullin et al 2011;Schroer et al 2012;Zhang 2013;Nuclear Energy Agency 2015;Tsisar et al 2017;Salaev et al 2018).…”

Figure 9 from: Avdeenkov AV, Achakovsky OI, Ketlerov VV, Kumaev VYa, Orlov AI (2020) Basic models and approximation for the engineering description of the kinetics of the oxide layer of steel in a flow of heavy liquid metal coolant under various oxygen conditions. Nuclear Energy and Technology 6(3): 215-234. https://doi.org/10.3897/nucet.6.59068

“…Kinetics of corrosion processes of steel components in HLMC is determined by the associated processes of hydrodynamics and the interaction of dissolved components, primarily such as oxygen and iron. The justification and appropriate modeling of these processes is an important component for substantiating heavy liquid metal coolant technology (Robertson et al 1988;Fazio et al 2001;Aiello et al 2004;Ivanov et al 2005Ivanov et al , 2017Zhang et al , 2007Lim et al 2010;Martinelli et al 2008a;Weisenburger 2008;Schroer and Konys 2009;Steiner 2009;Hwang and Lim 2010;Askhadullin et al 2011;Schroer et al 2012;Zhang 2013;Nuclear Energy Agency 2015;Tsisar et al 2017;Salaev et al 2018).…”