Experimental Simulation of Decay Heat of Corium at the Lava-B Test-Bench

Bekmuldin, Maxat; Skakov, М. K.; Baklanov, Viktor; Градобоев, А. В.; Akaev, Assan; Толеубеков, К. О.

doi:10.1080/00295450.2023.2226539

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…At the same time, despite the above advantages, installations for induction heating of corium have relatively low efficiency values. In addition, the efficiency of induction heating depends on many electrical and geometric parameters of both the inductor and the experimental section, which leads to the need to use more powerful sources of electricity to achieve the energy release in the melt required by the experimental conditions [17][18]. Another disadvantage of using an inductor is the pronounced surface skin effect.…”

Section: Induction Heating Methodsmentioning

confidence: 99%

Analysis of Methods for Simulating the Decay Heat in Corium When Modeling a Severe Accidents at Nuclear Power Plant

Skakov

2024

Eurasian phys. tech. j.

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It is known that during development of a severe accident at a nuclear power plant, the melting of core materials and theformation of corium occurs. A feature of corium is the presence of a decay heat, which contributes a lot to the nature of its interaction with the structural materials of the reactor facility. In this regard, quite serious requirements are imposed on methods for simulating decay heat in the corium prototype, which relate to both the uniformity of the volume distribution and its intensity. This paper presents a comparative analysis of existing methods for decay heat simulation in corium, which are used at various experimental facilities investigating the operation of passive protection systems in severe accidents with reactor meltdown at nuclear power plants. By comparing the advantages and disadvantages, a more practical method of decay heat simulation is determined and ways are proposed to further improve the chosen method to fully simulate the thermal field of a real corium.

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Section: Induction Heating Methodsmentioning

confidence: 99%

Analysis of Methods for Simulating the Decay Heat in Corium When Modeling a Severe Accidents at Nuclear Power Plant

Skakov

2024

Eurasian phys. tech. j.

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Results of experimental simulation of interaction between corium of a nuclear reactor and sacrificial material (Al2O3) with a lead layer

Skakov,

Baklanov,

Bekmuldin

et al. 2024

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<abstract> This paper presents the results of an experimental study of the interaction of a candidate sacrificial material (SM) for a light water reactor melt trap with corium at the Lava-B test-bench. The candidate sacrificial material is a combination of aluminum oxide and a lead layer. The idea of using such a combination of SM is based on the fact that when the lead layer interacts with corium, there will be an increase in the intensity of heat removal from the corium, as well as the chemical interaction between the corium and SM due to the high heat-conducting properties of lead. This approach will improve the efficiency of corium localization in the melt trap compared to the current set of sacrificial material. Experiments have shown active melting and boiling of lead during its interaction with corium. This is confirmed both by the readings of thermocouples and by the X-ray diffraction phase analysis of the deposit material formed on the walls of the melt receiver (MR) of the Lava-B bench, sampled after the experiment. The experiment results show that the lead layer reduces the rate of increase in the temperature of the corium and increases the rate of erosion of the ceramic part of the SM. With these circumstances, it is possible to conclude that the use of aluminum oxide with a lead layer is promising in practice. </abstract>

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Experimental Simulation of Decay Heat of Corium at the Lava-B Test-Bench

Cited by 2 publications

References 17 publications

Analysis of Methods for Simulating the Decay Heat in Corium When Modeling a Severe Accidents at Nuclear Power Plant

Analysis of Methods for Simulating the Decay Heat in Corium When Modeling a Severe Accidents at Nuclear Power Plant

Results of experimental simulation of interaction between corium of a nuclear reactor and sacrificial material (Al<sub>2</sub>O<sub>3</sub>) with a lead layer

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