INTERACTION BETWEEN MOLTEN CORIUM UO2+X-ZrO2-FeOy AND VVER VESSEL STEEL

被引:3
|
作者
Bechta, S. V. [1 ]
Granovsky, V. S. [1 ]
Khabensky, V. B. [1 ]
Krushinov, E. V. [1 ]
Vitol, S. A. [1 ]
Sulatsky, A. A. [1 ]
Gusarov, V. V. [2 ]
Almiashev, V. I. [2 ]
Lopukh, D. B. [3 ]
Bottomley, D. [4 ]
Fischer, M. [5 ]
Piluso, P. [6 ]
Miassoedov, A. [7 ]
Tromm, W. [7 ]
Altstadt, E. [8 ]
Fichot, F. [9 ]
Kymalainen, O. [10 ]
机构
[1] Alexandrov Sci Res Technol Inst, Sosnovyi Bor, Russia
[2] Russian Acad Sci, Inst Silicate Chem, St Petersburg, Russia
[3] SPb State Electrotech Univ LETI SPbGETU, St Petersburg, Russia
[4] Joint Res Ctr, Inst Transurane, Karlsruhe, Germany
[5] AREVA NP GmbH, Erlangen, Germany
[6] CEA, DEN, DSNI, Saclay, France
[7] Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany
[8] Forschungszentrum Dresden Rossendorf, Dresden, Germany
[9] SEMCA, DPAM, IRSN, St Paul Les Durance, France
[10] FORTUM Nucl Serv Ltd, Espoo, Finland
关键词
severe accident; in-vessel retention; vessel steel corrosion; CORROSION;
D O I
10.13182/NT10-A9459
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
In case of in-vessel corium retention during a severe accident in a light water reactor, weakening of the vessel wall and deterioration of the vessel steel properties can be caused both by the melting of the steel and by its physicochemical interaction with corium. The interaction behavior has been studied in medium-scale experiments with prototypic corium. The experiments yielded data for the steel corrosion rate during interaction with UO2+X-ZrO2-FeOy melt in air and steam at different steel surface temperatures and heat fluxes from the corium to the steel. It has been observed that the corrosion rates in air and steam atmosphere are almost the same. Further, if the temperature at the interface increases beyond a certain level, corrosion intensifies. This is explained by the formation of liquid phases in the interaction Zone. The available experimental data have been used to develop a correlation for the corrosion rate as a function of temperature and heat flux.
引用
收藏
页码:210 / 218
页数:9
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