Дерявко И.И.


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Author articles


Nuclear reactor corium properties obtained at IGR research reactor

Authors: Скаков Мажын Канапинович, Мухамедов Н.Е., Пахниц А.В., Дерявко И.И.

Keywords: ИГР, расплав

Organisation: Филиал «Институт атомной энергии» РГП НЯЦ РК

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In the paper for the first time thermophysical properties (specific heat capacity, thermal diffusivity and thermal conductivity) of natural corium of a fast nuclear power reactor were determined in the temperature range from room one up to ~400 °С. The obtained data is oriented at use in temperature field calculations when modeling the processes of corium melt retention in fast nuclear reactor vessel.

Temperature dependences for thermo-physical properties of fast reactor’s full-sized and prototype corium

Authors: Скаков М.К., Дерявко И.И., Кукушкин И.М., Вурим А.Д., Мухамедов Н.Е.

Keywords: технология изготовления прототипного кориума, натурные и прототипные кориумы быстрого энергетического реактора

Organisation: Филиал «Институт атомной энергии» РГП НЯЦ РК

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The paper addresses techniques and results of full-sized and prototype corium samples for power fast reactor fabricated under conditions that simulate severe accident with loss of coolant (LOCA); demonstrates technology of manufacturing corium prototype in VCG-135 high-temperature testing facility; describes results of studying temperature dependences for thermo-physical properties of full-sized and prototype corium. 

Thermal cycling influence on properties thermophysical corium of fast energy reactor

Authors: Скаков М.К., Дерявко И.И., Кукушкин И.М., Мухамедов Н.Е.

Keywords: термоциклирование, кориум, температуропроводность, удельная теплоемкость, теплопроводность, теплофизические свойства (ТФС)

Organisation: Филиал «Институт атомной энергии» РГП НЯЦ РК

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The analysis of the results of measurements of thermophysical properties (thermal diffusivity a, specific heat capacity cp, and thermal conductivity λ) for two batches of samples of full-length and prototypical coriums of a fast energy reactor was performed. Features of measurements of thermophysical properties (TFS) by the method of thermal flare on disk samples of the coriums in the UTFI-2 installation are considered. The absence of a regular effect of the thermocyclic action appearing in the samples of the coriums during the TFS measurements on the results of studies of the temperature dependences of the thermophysical properties of the coriums in the temperature range from room temperature to about 400 °C has been revealed.