Corrosion of Vessel Steel During its Interaction with Molten Corium - Part 2 Model Development

An experimental examination of the cooled vessel steel corrosion during the interaction with molten corium is presented. The experiments have been conducted test facility and followed up with physico-chemical and metallographic analyses of melt samples and coriumspecimen ingots. The results discussed in the first part of the paper have revealed specific corrosion mechanisms for air and inert atmosphere above the melt. Models have been proposed based on this information and approximate curves constructed for the estimation of the corrosion rate or corrosion depth of vessel steel in conditions simulated by the experiments.JRC.E.2-Hot cell

Corrosion of Vessel Steel During its Interaction with Molten Corium - Part 1 Experimental

This paper is concerned with corrosion of a cooled vessel steel structure interacting with molten corium in air and neutral (nitrogen) atmospheres during an in-vessel retention scenario. The data on corrosion kinetics at different temperatures on the heated steel surface, heat flux densities and oxygen potential in the system are presented. The post-test physico-chemical and metallographic analyses of melt samples and the corium–specimen ingot have clarified certain mechanisms of steel corrosion taking place during the in-vessel melt interaction.JRC.E.2-Hot cell

Corrosion of Vessel Steel during its Interaction with Molten Corium. Part 2. Model Development.

Abstract not availableJRC.E-Institute for Transuranium Elements (Karlsruhe