Liquid lead-bismuth eutectic (LBE) was used as coolant and spallation target in Accelerator Driven Sub-critical System(ADS). However, structural material corrosion caused by LBE is a serious problem which can lead to a system failure. Through controlling concentration of dissolved oxygen in LBE, the oxide scales can form on the surface of the material and protect the material from corrosion. At present, there are mainly two methods of oxygen control, which are gas phase oxygen control and solid phase control. Both of them have considerable disadvantages when applying to large scale nuclear systems. In this paper, the researcher fabricates an electrochemical oxygen pumping (EOP) which has been widely used in industry production in order to achieve highly accurate control of the dissolved oxygen concentration in LBE systems. In this paper, a set of electrochemical oxygen pumping is designed.

Yungan Zhao, Fenglei Niu and Anxia Yang, A New Method of Controlling Dissolved Oxygen in Liquid Lead-Bismuth Eutectic Systems by Electrochemical Oxygen Pumping. Academic Journal of Engineering and Technology Science (2019) Vol. 2: 21-28. https://doi.org/10.25236/AJETS.020011.

[1] Y. Zhao (2015). The design and research of solid phase oxygen control system in LBE. North China Electric Power University, Beijing.
[2] M. Zhang (2013). Main influence factors of gas-phase oxygen control in liquid lead-bismuth eutectic. University of Science and Technology of China, Hefei.
[3] F. Concetta. (2015). Handbook on Lead-bismuth Eutectic Alloy and Lead Properties, Matcrials Compatibility, Thermal-hydraulics and Technologies. Nuclear energy agency, OECD.
[4] C. Schroer. and J. Konys (2007). Physics Chemistry of Corrosion and Oxygen Control in Liquid Lead and Lead-Bismuth Eutectic. Forschungszentrum Karlsruhe, Germany, vol.7364, p.36-38.
[5] P. N. Martynov, R. S. Askhadullin and A. A. Simakov (2009). Designing mass exchanger for control of oxygen content in Pb-Bi (PB) coolants in various research facilities. 17th International Conference on Nuclear Engineering, vol.1, no. ICONE17-75506, p.555-561.
[6] J. Lim, G. Manfredi and S. Gavrilov (2014). Control of dissolved oxygen in liquid LBE by electrochemical oxygen pumping. Sensors and Actuators B Chemical, vol.204, p.388-392.
[7] N. Li (2002). Active control of oxygen in molten lead–bismuth eutectic systems to prevent steel corrosion and coolant contamination. Journal of Nuclearmaterials, vol.300, no.1, p.73-81.
[8] B. F. Gromov (1997). Stages of development of lead-bismuth as a coolant for nuclear reactors in Russia. International workshop on physics of accelerator-driven systems for nuclear transmutation and energy production, Trento, Italy.
[9] G. V. Samsonov (1982). The Oxide Handbook. Springer, Boston.
[10] J.Janek and C. Korte (1999). Electrochemical blackening of yttria-stability zirconia-morphological instability of the moving reaction front. Solid State Ionics, vol.116, no.3-4, p.181-195.
[11] J. Lim, G. Manfredi and A. Marien (2013). Performance of potentiometric oxygen sensor with LSM-GDC composite electrode in liquid LBE at low temperature. Sensors and Actuators B Chemical. vol.188, p.1048-1054.