Authors & Affiliations
Bondarenko A.I., Savin M.M., Supotnitskaya O.V., Yantseva L.M.
A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia
Bondarenko A.I. – Rеsearcher, A.I. Leypunsky Institute for Physics and Power Engineering.
Savin M.M. – Rеsearcher, A.I. Leypunsky Institute for Physics and Power Engineering.
Yantseva L.M. – Engineer, A.I. Leypunsky Institute for Physics and Power Engineering.
Sodium fires with heat and fume release often happen at coolant circuit rupture of sodium fast reactor. At nuclear power plant with the sodium fast reactor the more probable scenario of sodium fire is considered burning of falling from damaged pipeline liquid sodium stream and the pool formed under it. The simple models for sodium fire which contains minimum of phenomenological parameters and gives the opportunity to get the upper limits of heat generation and amount of aerosol generated at sodium fire are more preferable. The physical and mathematical model for estimation a combined burning rate of the freely falling liquid sodium stream and the pool formed under it is proposed. The model is based on the laws of energy and mass conservation, the empiric correlations for burning rate of stream and pool sodium and assumption that pool depth cannot be less than equilibrium. The equilibrium pool depth depends on surface tension of liquid sodium. The probable heat transfer techniques for steam-phase and heterogeneous burning of metal are discussed. The experimental data of the Monju's sodium fire imitation are used for verification of the model presented. Good agreement between experimental and calculated data is observed.
nuclear power plant, safety, sodium, fire, stream, pool
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