DOI: 10.55176/2414-1038-2021-4-154-161
Authors & Affiliations
Zagorulko Yu.I., Ganichev N.S., Konovalov M.A.
A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia
Zagorulko Yu.I. – Leading Researcher. Contacts: 1, Bondarenko sq., Obninsk, Kaluga region, Russia, 249033. Tel.: +7 (484) 399-80-84, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Ganichev N.S. – Head of Laboratory.
Konovalov M.A. – Junior Researcher.
Abstract
Mineral oils and some other organic substances are employed as cooling-agents and lubricators of reactor equipment with movable parts. At normal operation condition these substances are able to penetrate into reactor protective gas plenum in vapor and aerosols forms. Due to their thermolysis and interaction with sodium there are produced hydrogen and different hydrocarbons species, that are detected usually in cover gas. Kinetic of the above processes is dependent on temperature conditions and with temperature increase from 350 to 500 °C the evolution of some hydrocarbons could rise up to 1–2 orders of magnitude.
There were published notes on accidental ingress of oil in the primary circuit of fast reactor sodium coolant. Investigation results of such accidents simulation on the experimental sodium circuit are presented in the report. There are discussed results on kinetic of volatile hydrocarbons evolution from oil-pyrolysis products depositions on the circuit pipes walls and gas plenum surfaces. As well, different brands of oil are compared on their behavior in sodium environment.
Keywords
organic substances, mineral oils, interaction with sodium, volatile hydrocarbons, oil-pyrolysis products depositions
Article Text (PDF, in Russian)
References
- Kovalev Yu.P., Gavrilova N.V., Zagorul'ko Yu.I. Sostav i kinetika vyhoda letuchih komponentov vzaimodejstviya s natriem masel i produktov ih piroliza v gazovyh polostyah natrievyh system [Composition and kinetics of the release of volatile components of interaction with sodium of oils and products of their pyrolysis in the gas cavities of sodium systems]. Preprint FEI-2675 – Preprint IPPE-2675, Obninsk, 1997. 18 p.
- Kozlov F.A., Zagorulko Yu.I., Kovaliov Yu.P. Investigations of sodium-mineral oil interaction in the Experiments Modelling oil ingress phenomena on PFR. Proc. of the Technical Committee Meeting on Material-Coolant Interactions and Material Movement and Relocation in Liquid Metal Fast Reactors. O-arai, Ibaraki, JAPAN, June 6–9, 1994, pp. 445–461.
- Zagorulko Yu.I., Kovalev Yu.P., Starkov O.V., Kozlov F.A. Some Aspects of Carbon Bearing Species Behaviour in a System Sodium-Steels-Protective Gas-Mineral Oil. Proceedings of the Second Int. Seminar on Liquid Metal Systems: Material Behavior and Physical Chemistry in Liquid Metal Systems. Karlsruhe Germany, 16–18 March 1993. Boston: Springer, 1995, pp. 279–289. doi.org/10.1007/978-1-4615-1977-5.
- Longson B., Thorley A.W. Solubility of carbon in sodium. Journal of Applied Chemistry, 1970, vol. 20, issue 12, 1970, pp. 372–379.
- Kozlov F.A., Kovalev Yu.P., Zagorul'ko Yu.I., Il'inov Yu.P. Kinetika vzaimodejstviya uglerodsoderzhashchih gazov s natriem [Kinetics of interaction of carbon-containing gases with sodium]. Rabochie materialy soveshchaniya specialistov stran — chlenov SEV “Problemy tekhnologii i korrozii v natrievom teplonositele i zashchitnom gaze” [Proc. of the Meeting of Experts of the CMEA Member Countries “Problems of Technology and Corrosion in Sodium Coolant and Protective Gas”]. Drezden, 1977, pp. 16–21.
UDC 621.039.534.63
Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2021, issue 4, 4:14
