Modeling of the Induction Heating for Imitation Decay Heat in the Corium During the Interaction With Heat-Resistant Materials

Толеубеков, К. О.; Хажидинов, А. С.; Акаев, А. С.

doi:10.52676/1729-7885-2021-1-9-14

Cited by 3 publications

(1 citation statement)

References 1 publication

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

et al. 2023

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On the Possibility of Forming a Corium Pool by Induction Heating in a Melt Trap of the Lava-B Facility

et al. 2023

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This paper presents the results of computational and physical studies on the production of corium and its retention in an MR’s melt trap of the Lava-B facility. A feature of the Lava-B facility used in the IAE NNC RK to study the processes occurring during a severe accident at a nuclear reactor, is the separation of the stages of the reactor core corium formation and its interaction with structural materials. The melting of materials takes place in an induction furnace with a hot crucible, after which it moves to a melt receiver (MR) in which the test object is located. In the case of studies of processes occurring outside the reactor vessel, this is a special trap, which is placed in the inductor to simulate decay heat. However, based on the conservative computational estimates, it was found that the inductor power in the MR can be sufficient to directly produce, melt, and, subsequently, maintain the corium in the liquid phase. In this regard, in order to optimize the experiments under controlled conditions, the authors came up with the idea to experimentally test the possibility of producing corium by induction heating directly in the MR’s melt trap. In addition, according to the authors, this method would obviate the problem of corium contact with the carbon environment of the melting furnace of the Lava-B facility. Previously, burden heating simulating corium was modeled on the computer using available parameters of the MR’s induction heater. Based on the numerical experiment, the conditions for physical modeling of the corium production in the MR’s melt trap were established. An analysis of the physical modeling showed that during the burden heating in the melt trap, its metal components became liquid, thus, forming a melt pool. However, in terms of this design of the trap, there were problems associated with the complete melting of all corium components, as well as with the integrity of the experimental device when forming the corium pool and during the actual physical modeling.

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Modeling of the Induction Heating for Imitation Decay Heat in the Corium During the Interaction With Heat-Resistant Materials

Cited by 3 publications

References 1 publication

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

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

On the Possibility of Forming a Corium Pool by Induction Heating in a Melt Trap of the Lava-B Facility

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