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VVER steel corrosion during in-vessel retention of corium melt
Aleksandrov Research Institute of Technology, NITI, Sosnovy Bor.ORCID iD: 0000-0001-7816-8442
Alexandrov Research Institute of Technologies (NITI).
A.P. Aleksandrov Research Institute of Technology.
A.P. Aleksandrov Research Institute of Technology.
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2008 (English)In: Proceedings of the 3rd European Review Meeting on Severe Accident Research (ERMSAR 2008), 2008Conference paper (Refereed)
Abstract [en]

Physicochemical phenomena taking place at the corium-steel interaction during theexternal cooling of reactor vessel can result in high-temperature steel corrosion and thinningof the vessel wall. The ISTC METCOR project's experimental studies have shown that themain factors influencing corrosion depth and kinetics are oxygen potential, melt compositionand steel interfacial temperature but also melt – vessel heat flux.Experimental data are used for building a model for VVER vessel steel corrosion undercorium thermochemical loads and for correlations to quantitatively analyze the influence ofcorrosion on the rector vessel thinning. The finite-element calculations, in which thedeveloped models of corrosion and heat transfer in corium pool were used, were able toreproduce the temperature and stress-and-strain vessel condition.

Place, publisher, year, edition, pages
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Energy Engineering
URN: urn:nbn:se:kth:diva-53654OAI: diva2:470554
3rd European Review Meeting on Severe Accident Research, Nesseber, Hotel Vigo, Bulgaria 23-25 September 2008
QC 20120110Available from: 2011-12-29 Created: 2011-12-29 Last updated: 2012-01-21Bibliographically approved

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Bechta, Sevostian
Energy Engineering

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