Authors & Affiliations

Askhadullin R.Sh., Storozhenko A.N., Shelemetyev V.M., Skomorokhov A.N., Sadovnichy R.P., Legkikh A.Yu.
A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia

Askhadullin R.Sh. – Deputy Director of the Department of Science and Technology for Science and Technology, Cand. Sci. (Tech.), A.I. Leypunsky Institute for Physics and Power Engineering.
Storozhenko A.N. – Head of Laboratory, Cand. Sci. (Phys.-Math.), A.I. Leypunsky Institute for Physics and Power Engineering.
Shelemetyev V.M. – Chief Engineer, A.I. Leypunsky Institute for Physics and Power Engineering.
Skomorokhov A.N. – Senior Researcher, Cand. Sci. (Tech.), A.I. Leypunsky Institute for Physics and Power Engineering.
Sadovnichy R.P. – Researcher, A.I. Leypunsky Institute for Physics and Power Engineering. Contacts: 1, pl. Bondarenko, Obninsk, Kaluga region, Russia, 249033. Tel.: +7(484) 399-42-77; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Legkikh A.Yu. – Senior Researcher, Cand. Sci. (Tech.), A.I. Leypunsky Institute for Physics and Power Engineering.

Abstract

Oxygen dissolved in a lead coolant is the most important impurity in ensuring the corrosion resistance of structural steels. In the presence of dissolved oxygen in the lead coolant, oxide films are formed on the surfaces of the structural steels of the circuit and equipment, protecting the steels from the corrosion and erosive attack of the coolant. To ensure the conditions for the formation of protective coatings and their integrity during the operation of a reactor with a lead coolant, it is necessary to maintain the dissolved oxygen content within the specified range. Different types of solid electrolyte sensors for oxygen control in lead-based solutions have been developed in the IPPE. A significant number of research and development projects have been completed to improve the design, processing technique, and to justify the resource of oxygen thermodynamic activity sensors (TDA) for reactor installations. To date, the development in the field of increasing the accuracy of oxygen activity meas-urements by oxygen TDA sensors is being actively pursued. Installations and methods are created that allow to measure oxygen TDA in melts of liquid metal coolants with an accuracy of 10%.

Keywords
oxygen activity sensors, thermodynamic activity, ceramic sensitive element, lead coolant, zirconium dioxide, reference electrode, calibration method, operating resource, measurement error, calibration gas mixtures

Article Text (PDF, in Russian)

References

UDC 621.039

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants", 2017, special issue, 5:2